Disclosure of Invention
The invention aims to solve the technical problem of providing a comprehensive on-line monitoring device and a protection control method for a transformer.
In order to solve the problems, the invention adopts the following technical scheme:
as the hardware equipment of on-line monitoring, a comprehensive on-line monitoring device of the transformer comprises a controllable power module arranged in an outdoor cabinet body; the controllable power supply module is electrically connected with a sensor and a monitoring IED;
the controllable power supply module is electrically connected with a comprehensive monitoring host;
the controllable power supply module comprises a plurality of power supplies which are respectively provided with direct current 24V and alternating current power frequency 220V power supply;
The sensor comprises a grounding current sensor,
The monitoring IEDs comprise partial discharge monitoring IEDs, winding deformation monitoring IEDs, winding optical fiber temperature measurement on-line monitoring IEDs, vibration on-line monitoring IEDs and transformer oil gas chromatographic monitoring IEDs, and are used for monitoring corresponding parameters of the transformer;
The monitoring IED and the sensor are electrically connected with the comprehensive monitoring host.
For the specific method of monitoring, a comprehensive online protection control method of a transformer is realized by means of the device;
The control method comprises the following steps:
Step 1, adding a controllable power module in a cabinet body;
step 2, the power supply of the sensor is connected with a power supply channel of a controllable power supply module, and the controllable power supply module is connected with a comprehensive monitoring host through RS-485;
Step 3, configuring software, wherein the system software configures the controllable power supply nodes corresponding to each monitoring IED, keeps consistent with the actual power supply wiring, restarts the comprehensive monitoring host software after the configuration is completed, takes effect, and step 4 and step 5, when the sensor has a problem, the comprehensive monitoring host records the duration, and if the duration is longer than the set time, the comprehensive monitoring host automatically controls the corresponding controllable power supply nodes to be powered off and powered on;
step 4, the comprehensive monitoring host judges whether the communication state of the monitoring IED is normal, and if the communication state is abnormal, the steps 6 and 7 are executed, and the steps are repeatedly executed at most twice; if the communication is normal, continuing to operate, and executing the step 5;
step 5, the comprehensive monitoring host judges whether the monitoring IED monitoring value is updated, if the value updating fails, the steps 6 and 7 are executed, and the steps are repeatedly executed at most twice; if the numerical value is updated successfully, continuing to run, and executing the step 8;
Step 6, after the preset time, the comprehensive monitoring host automatically controls the corresponding controllable power supply node to power off;
Step 7, after the preset time, the comprehensive monitoring host automatically controls the corresponding controllable power supply node to supply power;
and 8, if the system software continuously repeats the steps 6 and 7 twice and the abnormality of the sensor or the monitoring IED is not solved, the comprehensive monitoring host prompts the sensor or the monitoring IED to be abnormal, the detection and replacement are needed, and if the system detects that the sensor or the monitoring IED is normal.
In order to realize the assembly line of the comprehensive online monitoring device of the transformer for realizing the assembly line production of the device and the inspection before delivery, the comprehensive online monitoring device of the transformer is provided with a cabinet body part;
the cabinet body part comprises a top plate and a bottom plate part which are arranged up and down; side vertical plates at two sides of the back plate part are arranged between the top plate and the bottom plate part;
a plurality of supporting plate parts are inserted in the cabinet body part;
the assembly line comprises a longitudinal conveyor belt part for conveying the cabinet body; a plurality of transverse poking plates are distributed on the longitudinal conveyor belt part;
at least a first station, a second station, a third station, a fourth station and a fifth station are distributed on the longitudinal conveyor belt part;
A first station for placing the floor portion onto the longitudinal conveyor belt portion;
the second station is used for placing the backboard part and the side vertical plate which are preloaded with the fittings on the bottom plate part and assembling the backboard part and the side vertical plate into a whole through hardware;
the third station is used for mounting the top plate on the rear upper part of the back plate part and the side vertical plate and connecting the top plate with the side vertical plate to form a cabinet body integrally;
A fourth station for layering and inserting and connecting the pallet parts in the cabinet body;
and a fifth station for placing the measuring device on the pallet portion and fixing and wiring.
In order to realize assembly line, the assembly method of the comprehensive online monitoring device of the transformer is realized by the assembly line; by performing the following steps;
Step one, in a first station, placing a bottom plate part on a longitudinal conveyor belt part;
step two, in a second station, the backboard part and the side vertical plate which are preloaded with accessories are placed on the bottom board part, and are assembled into a whole through hardware;
step three, in a third station, a top plate is arranged above the rear part of the back plate part and the side vertical plates and is connected with the rear part of the side vertical plates to form a cabinet body integrally;
Step four, in a fourth station, inserting and connecting the supporting plate parts in layers in the cabinet body part;
Fifthly, placing measuring equipment on the supporting plate part and fixing and wiring in a fifth station;
And step six, executing an online protection control method at a sixth station, and carrying out a test before delivery.
The invention has reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, fund saving, compact structure and convenient use.
Compared with the prior art, the invention has the advantages that: 1) The method adopts coding automatic control, the comprehensive monitoring host self-checking comprehensive on-line monitoring device monitors the operation condition of each IED, and the abnormal monitoring IED power supply is automatically controlled without human participation. 2) The real-time performance is good, the method can find out the abnormality of the comprehensive online monitoring device in time, and the problems of hysteresis and the like existing in manual regular inspection are avoided. 3) The comprehensive online monitoring device is high in practicability, electronic devices are arranged inside the comprehensive online monitoring device, abnormality can be avoided in long-term operation, and the strategy effectively solves the problems of acquisition, communication and the like of each monitoring IED in long-term full-load operation. 4) The device has the advantages that the usability is high, the popularization is convenient, the controllable power supply module is integrated in the cabinet body of the on-line monitoring device, the control strategy is integrated in the system software, the modular design is adopted, the maintenance is convenient, the device is easy to debug and complete after leaving the factory, and the on-site installation is not needed to debug.
In the present invention, the power supply of each sensor and monitoring IED is individually controllable, i.e. power-off, power-on encodable control. And the system software periodically acquires monitoring data through a communication network, and once abnormal conditions such as communication interruption or non-update of the monitoring quantity value of the sensor or the IED are monitored, the system software can control the power supply corresponding to the sensor or the IED to be powered on and off so as to initialize the sensor or the IED. The specific advantageous effects and the technical problems to be solved are specifically described with reference to the embodiments.
Detailed Description
As shown in fig. 1-10, the integrated on-line monitoring device for a transformer and the protection control method of the embodiment, in particular, as shown in fig. 1, the integrated on-line monitoring device for a transformer of the embodiment comprises a controllable power module installed in an outdoor cabinet body 1; the controllable power supply module is electrically connected with a plurality of matched sensors and monitoring IED devices; the controllable power supply module is electrically connected with the comprehensive monitoring host to perform data processing calculation;
as can be seen from fig. 3, the controllable power module includes a plurality of power supplies respectively provided with dc 24V and ac 220V power supply; the outputs of the different circuits are realized.
The sensor comprises sensor devices such as a grounding current sensor and the like, and meets the monitoring requirement.
The model number of the comprehensive monitoring host can be TSMT-5105 and the like.
1-3, Specifically, the monitoring IEDs may include a partial discharge monitoring IED, a winding deformation monitoring IED, a winding fiber temperature measurement on-line monitoring IED, a vibration on-line monitoring IED, a transformer oil gas chromatographic monitoring IED, etc., for monitoring corresponding parameters of the transformer, thereby ensuring accurate and comprehensive monitoring;
The monitoring IED and the sensor are electrically connected with the comprehensive monitoring host, so that signal feedback is realized.
The comprehensive monitoring host monitors the running state of the comprehensive on-line monitoring sensor in real time, identifies abnormal conditions and automatically generates a control strategy; according to the control strategy, the comprehensive monitoring host automatically controls the controllable power supply module to realize the abnormal recovery of the sensor, thereby realizing the strategy calculation and the execution control.
As a system, a comprehensive monitoring host is provided with system software, and whether the sensor or the monitoring IED is abnormal or not is judged through the link condition of the system software and the sensor and the monitoring IED and the numerical value updating condition of the sensor communication; as a specific description, the comprehensive monitoring host machine realizes the restarting operation of the sensor by controlling the on-off of the power supply channel of the controllable power supply module;
And the comprehensive monitoring host machine performs N times of power-off operation on the abnormal sensor at most, and the normal operation still cannot be recovered after the N times of power-off operation, so that the system software gives up the control on the sensor.
As shown in fig. 1-3, the comprehensive on-line protection control method of the transformer of the embodiment is realized by the aid of the device;
The control method comprises the following steps:
Step1, a controllable power module is additionally arranged in a cabinet body (1);
step 2, the power supply of the sensor is connected with a power supply channel of a controllable power supply module, and the controllable power supply module is connected with a comprehensive monitoring host through RS-485;
step 3, configuring software, wherein the system software configures controllable power supply nodes corresponding to each monitoring IED, keeps consistent with the actual power supply wiring, and restarts the comprehensive monitoring host after the configuration is completed, so that the configuration is effective;
step 4, the comprehensive monitoring host judges whether the communication state of the monitoring IED is normal, and if the communication state is abnormal, the steps 6 and 7 are executed, and the steps are repeatedly executed at most twice; if the communication is normal, the power supply node control is not performed, and the step 5 is executed;
Step 5, the comprehensive monitoring host judges whether the monitoring IED monitoring value is updated, if the value updating fails, the steps 6 and 7 are executed, and the steps are repeatedly executed at most twice; if the numerical value is updated successfully, the power supply node control is not performed, and the step 8 is executed;
Step 6, after the preset time, the comprehensive monitoring host automatically controls the corresponding controllable power supply node to power off;
Step 7, after the preset time, the comprehensive monitoring host automatically controls the corresponding controllable power supply node to supply power;
and 8, if the system software continuously repeats the steps 6 and 7 twice and the abnormality of the sensor or the monitoring IED is not solved, the comprehensive monitoring host prompts the sensor or the monitoring IED to be abnormal, the detection and replacement are needed, and if the system detects that the sensor or the monitoring IED is normal.
In step 2, several grounding current sensors are connected with the 1 channel of the controllable power module together, the winding deformation monitoring IED supplies power to the 2 channel of the controllable power module, the winding optical fiber temperature measuring IED is connected with the 3 channel of the controllable power module, the vibration on-line monitoring IED is connected with the 4 channel of the controllable power module, the partial discharge on-line monitoring IED supplies power to the 5 and 6 channels of the controllable power module respectively, the in-oil chromatograph monitoring equipment supplies power to the 7 channel of the controllable power module;
In step 4, the comprehensive monitoring host is powered on, the system software polls the running states of all sensors and monitoring IEDs once in a set time, if the sensors or the monitoring IEDs have communication interruption, steps 6 and 7 are executed, and if no abnormality exists, the comprehensive monitoring host is continuously operated;
In step 5, the system software polls the running states of all sensors and monitoring IEDs once in a set time, if the sensors or the monitoring IEDs have abnormal conditions with non-updated numerical values, steps 6 and 7 are executed, and if no abnormal conditions exist, step 8 is executed to continue to run the comprehensive monitoring host;
in step 6, the integrated online monitoring system software controls an abnormal sensor or monitors the power supply channel of the IED to be powered off;
in step 7, after the integrated online monitoring system software automatically controls the abnormal sensor or the monitoring IED to be powered off for a set time, the power is turned on again, so that the abnormal sensor or the monitoring IED is restarted;
in step 8, repeating steps 6 and 7, after the sensor or the monitoring IED is recovered to be normal, the comprehensive monitoring host is operated normally to prompt the normal operation, otherwise, repeating steps 6 and 7 again;
And (3) repeating the steps 6 and 7 for a set number of times, if the sensor or the monitoring IED still has abnormality, the comprehensive online monitoring system software starts to have abnormality prompt, so as to prompt the operation and maintenance personnel whether the abnormal sensor or the monitoring IED needs to be replaced.
In order to realize the automatic assembly of the device and realize the simulated monitoring of delivery, the prior art generally adopts manual assembly, the occupied area of the plate is large, and the assembly efficiency is low, therefore, the invention further improves the matched assembly line, thereby improving the production efficiency, saving the occupied area and greatly saving the auxiliary time, as shown in figures 4-10, the invention is improved as follows, the assembly line of the comprehensive online monitoring device of the transformer is used for assembling the comprehensive online monitoring device of the transformer, and the comprehensive online monitoring device of the transformer is provided with a cabinet body part 1;
the cabinet body 1 comprises a top plate 3 and a bottom plate 4 which are arranged up and down; a back plate portion 5 and side risers 2 on both sides of the back plate portion 5 are provided between the top plate 3 and the bottom plate portion 4 as a basic structure;
a plurality of supporting plate parts 8 are inserted into the cabinet body part 1, so that each device is stored in a layered manner;
as a main component, the assembly line includes a longitudinal conveyor belt portion 18 for conveying the cabinet body 1; a plurality of transverse shifting plates 19 are distributed on the longitudinal conveyor belt part 18; thereby realizing the separation and driving functions.
As the main improvement stations, at least a first station 20, a second station 21, a third station 22, a fourth station 23 and a fifth station 24 are distributed on the longitudinal conveyor belt portion 18, and may of course include a checking station; the invention mainly improves the automatic assembly of the hoisting assembly parts, mainly uses the existing fittings such as wiring, welding, labelling, mounting bolts, mounting hardware and the like as the main parts at present, and can also use the existing mechanical arm for assistance as the direction of the next improvement. As an introduction to the improvement station,
A first station 20 for placing the bottom plate portion 4 onto the longitudinal conveyor belt portion 18;
A second station 21 for placing the back plate part 5 and the side vertical plate 2 pre-assembled with the fittings on the bottom plate part 4 and assembling the parts into a whole through hardware; as a major improvement, one-off three-sided assembly can be achieved, with a high degree of concentration.
A third station 22 for installing the top plate 3 above and behind the back plate part 5 and the side vertical plates 2 and connecting the top plate with the side vertical plates 2 to form a cabinet body 1 integrally;
A fourth station 23 for inserting and connecting the pallet part 8 in layers in the cabinet body 1;
a fifth station 24 for placing the measuring device 13 on the pallet portion 8 and fixing and wiring. And then, performing circuit test to ensure the qualification rate of the equipment.
A cabinet door is arranged on the side vertical plate 2; a leg is arranged below the bottom plate part 4;
a side clamping piece 7 is arranged on the inner side wall of the side vertical plate 2; realizing connection and fixation.
A rear clamping piece 6 is arranged on the backboard part 5; the rear clamping piece 6 is connected with the side vertical plate 2; realizing fixed support and connection.
As a connecting fitting, the layered plug-in mounting support plate part 8 comprises a T-shaped hollowed-out main body 10, so that weight reduction, heat conduction and convenient installation and fixation are realized; t-shaped sliding blocks 9 are arranged on two sides of the rear part of the hollowed-out main body 10, so that guide installation is realized; elastic steel balls 11 are arranged on the T-shaped sliding block 9 at the upper and lower parts for realizing elastic clamping,
In order to improve manufacturability, a side opening 12 is arranged between the front end of the hollowed-out main body 10 and the T-shaped sliding block 9, and the side opening 12 is matched with the side clamping piece 7 and is connected through a corner;
the hollow main body 10 is provided with a measuring device 13; the measuring device 13 comprises a comprehensive monitoring host;
The pallet part 8 comprises a T-shaped frame 14; a bottom groove 15 is arranged on the bottom of the T-shaped frame 14; a side groove 16 communicating with the bottom groove 15 is provided on the side of the T-shaped frame 14; the T-shaped frame 14 is distributed with a distribution concave-convex 17; the connecting piece is conveniently connected and taken, and meanwhile avoiding of the connecting piece is realized.
The T-shaped slider 9 is intended to slide into the side slot 16; tail end of hollowed-out main body 10 for insertion into the bottom slot 15;
the elastic steel balls 11 are used for pressure contact with the groove side walls of the side grooves 16; vibration reduction and elastic fixation are realized; this is an improvement.
Redundant stations are provided at the longitudinal conveyor belt portion 18; and will not be described or illustrated herein.
The redundant station is used for installing a cabinet door; is a conventional technology and will not be described in detail.
As shown in fig. 6-10, at the first station 20, a first output unit is provided, where the first output unit includes a first carrying portion 25 disposed above the input end of the longitudinal conveyor belt portion 18, for storing the upright base plate portion 4, which is smaller in occupied area and convenient to convey compared with the lying arrangement, and the base plate portion 4 is disposed concavely and frontward; a first rear push rod 26 is arranged at the tail part of the first bearing part 25 so as to realize forward pushing, a first front guide plate 27 is arranged in front of the first bearing part 25 so as to prevent oblique front output, and a step-type first limit bracket 28 is arranged below the first front guide plate 27 and can drag the concave of the bottom plate so as to ensure the directivity when falling; one stroke of the first rear push rod 26 is the thickness of the single bottom plate portion 4, thereby ensuring the output one by one;
As a ingenious point of the present invention, a first falling channel 29 is provided between the first front guide plate 27 and the first carrying portion 25 for falling the bottom plate portion 4; a first jacking station 30 on the input end of the longitudinal conveyor section 18 is provided below the first drop channel 29, and a first front baffle arm 31 is provided in front of the first jacking station 30; the first front baffle arm 31 is for blocking the bottom plate portion 4 that is lapped on the dial plate 19 so that the bottom plate portion 4 is located between the adjacent dial plates 19; the technical characteristics of the previous section are combined, so that the bottom plate is ensured to vertically fall down, the notch is upward through the hook, the bottom plate is prevented from being piled up or overlapped on the transverse plate through the front baffle, and meanwhile, the longitudinal positioning is realized.
As a ingenious point of the invention, a second circulating conveyor belt 32 is transversely arranged above the longitudinal conveyor belt part 18 at the second station 21, and a second suspension belt 33 which moves synchronously and circularly is connected below the second circulating conveyor belt 32 through a second connecting plate 34; a plurality of groups of second adsorption parts are sequentially distributed on the second suspension belt 33, and each second adsorption part comprises a second adsorption part A35, a second adsorption part B36 and a second adsorption part C37 which are sequentially arranged and are used for respectively adsorbing the side vertical plate 2 at one side, the back plate part 5 and the side vertical plate 2 at the other side in a suspension state; the second suction unit a35, the second suction unit B36, and the second suction unit C37 are respectively provided with a second telescopic head 38, and a second suction head 39 is connected to the second telescopic head 38; may be vacuum or electromagnetic adsorption. The two side plates and the back plate are sequentially arranged to realize simultaneous assembly, and meanwhile, the falling assembly is realized, and the assembly positioning in three directions is realized by utilizing the directionality of three sections of the conveying belt.
In order to make full use of the upper space, at the third station 22, a third conveyor belt portion 40 is laterally provided above the longitudinal conveyor belt portion 18, a third carrier 41 is provided above the third conveyor belt portion 40, and a third suction head 42 is provided on the third carrier 41 for sucking the top plate 3 at an upstream section of the third conveyor belt portion 40; the upper section is utilized to perform adsorption as shown in fig. 9, when the upper section is rotated to the lower section by the adsorption of the carrier, the turnover is realized, and specifically, a third descending head 43 positioned above the third station 22 is arranged at the lower section of the third conveyor belt part 40 and used for adsorbing and installing the upper surface of the turned top plate 3 in a descending manner; the falling of the top plate is realized by the upper section, and the installation is realized by the lower section. Therefore, in the second and third stations, the forward and reverse strokes are fully utilized, and the station for turning the wrap angle is particularly skillfully utilized, which is an improvement.
As a main structural description, at the fourth station 23, a fourth base 44 is provided on the side wall of the longitudinal belt portion 18, a fourth lifting frame 45 is provided on the fourth base 44, and a fourth carrier 46 is provided on the fourth lifting frame 45; a fourth tailgate 47 is provided at the rear of the fourth carrier 46;
A fourth stock channel of the top plate 3 is arranged above the fourth carrier 46;
When the fourth tailgate 47 is positioned below the fourth stock channel outlet, the top panel 3 drops onto the fourth carrier 46;
when the fourth tailgate 47 is positioned below the fourth stock channel outlet, the fourth tailgate 47 blocks the top panel 3 falling from the fourth stock channel outlet;
A fourth rear baffle 47 is arranged at the tail of the fourth carrier 46; for basic description, not major improvement, is conventional.
A sixth station 48 is arranged on one side of the fifth station 24, and the online protection control method is executed at the sixth station 48 to perform a test before delivery, so that the test is performed by adopting the method shown in fig. 1-3, the actual operation is simulated, the reality is true, and the actual situation can be fed back. The comprehensive online monitoring device for the transformer is the comprehensive online monitoring device for the transformer.
As shown in fig. 1-10, the method for assembling the integrated on-line monitoring device for the transformer of the present embodiment is by means of the assembly line; by performing the following steps;
step one, in a first station 20, placing the bottom plate portion 4 onto the longitudinal conveyor belt portion 18;
Step two, in a second station 21, the backboard portion 5 and the side vertical plate 2 which are preloaded with accessories are placed on the bottom plate portion 4 and assembled into a whole through hardware;
step three, in a third station 22, the top plate 3 is arranged above the rear part of the back plate part 5 and the side vertical plate 2 and is connected with the side vertical plate 2 to form a cabinet body part 1 integrally;
Step four, in a fourth station 23, the supporting plate parts 8 are layered inserted and connected in the cabinet body part 1;
Step five, in a fifth station 24, placing the measuring equipment 13 on the supporting plate part 8 and fixing and wiring;
And step six, executing an on-line protection control method at a sixth station 48, and carrying out a test before delivery.
In step one, first, the bottom plate portion 4 is placed upright into the first carrying portion 25, and then, the first rear push rod 26 is pushed one stroke at a time to the thickness of the single bottom plate portion 4 so that the single bottom plate portion 4 reaches the first falling passage 29, and reaches the first jacking station 30 under the action of gravity; secondly, under the action of the transverse poking plate 19, the lower part of the bottom plate part 4 is driven to move forward, so that the groove faces upwards, and meanwhile, the bottom plate part 4 is ensured to face upwards through the first front guide plate 27 and the first limit bracket 28; after that, the bottom plate portion 4 is positioned between the adjacent dial plates 19 by the first front barrier arm 31;
In the second step, first, fittings are arranged on the two side uprights 2 and the back plate portion 5; then, the side standing plate 2, the back plate portion 5 and the side standing plate 2 on the other side in the suspended state are adsorbed respectively by the second adsorbing portion a35, the second adsorbing portion B36 and the second adsorbing portion C37 which are sequentially arranged, and reach the second station 21; secondly, when in the second station 21, the back plate part 5 is positioned at the turning part, the upright plates 2 at the two sides are respectively positioned at the forward section and the return section, and the side upright plates 2 and the back plate part 5 are taken down and installed on the bottom plate part 4 and fixed;
In step three, first, the third suction head 42 sucks the top plate 3 at the upstream section of the third conveyor belt portion 40; then, the third descending head 43 sucks the upper surface of the inverted top plate 3, descends, and is separated from the third suction head 42 to be mounted.
The structure and the method realize automatic or semi-automatic assembly, skillfully utilize the return stroke and wrap angle of the conveyor belt, save space, realize automatic positioning and realize directional transmission.
As a specific application, the control strategy includes the following steps, which can be applied to the above step six.
Step 1, adding a controllable power module in a cabinet body of an on-line monitoring device;
step 2, the power supply of the sensor is connected with a power supply channel of a controllable power supply module, and the controllable power supply module is connected with a comprehensive monitoring host through RS-485;
step 3, configuring software, wherein the system software configures controllable power supply nodes corresponding to each monitoring IED, keeps consistent with the actual power supply wiring, and restarts the comprehensive monitoring host after the configuration is completed, so that the configuration is effective;
step 4, the comprehensive monitoring host judges whether the communication state of the monitoring IED is normal, if the communication still fails, the comprehensive monitoring host records the communication duration, if the communication duration is longer than 5 minutes, the step 6 is executed, and after 10 minutes, the step 7 is executed at most twice repeatedly; if the communication is normal, continuing to operate, and executing the step 5;
Step 5, the comprehensive monitoring host judges whether the monitoring IED monitoring value is updated or not, if the value updating fails, the comprehensive monitoring host records the communication duration, if the duration is longer than 5 minutes, the step 6 is executed, and after 10 minutes, the step 7 is executed repeatedly at most twice; if the numerical value is updated successfully, continuing to run, and executing the step 8;
Step 6, after 5 minutes, the comprehensive monitoring host automatically controls the corresponding controllable power supply node to power off;
step 7, after 10 minutes, the comprehensive monitoring host automatically controls the corresponding controllable power supply node to supply power;
and 8, if the system software continuously repeats the steps 6 and 7 twice and the abnormality of the sensor or the monitoring IED is not solved, the comprehensive monitoring host prompts the sensor or the monitoring IED to be abnormal, the detection and replacement are needed, and if the abnormality is solved, the sensor or the monitoring IED is prompted to be normal. 1-3, the method is used for processing the abnormal problem of the comprehensive online monitoring device. Taking a comprehensive on-line monitoring device of a transformer as an example, a controllable power module of a 1U standard case is arranged in an outdoor cabinet body, and the power supply of a bottom layer sensor and a monitoring IED is all taken from the controllable power module, and the controllable power module is connected with a comprehensive monitoring host through RS-485 (two-wire system). The controllable power supply module is provided with 8 power supplies in total, wherein the No. 1-4 power supplies are used for supplying power to 24V direct current, and the 5-8 channels are used for supplying power to 220V alternating current power frequency. The comprehensive online monitoring device comprises 2 partial discharge monitoring IEDs, two grounding current sensors, a winding deformation monitoring IED, a winding optical fiber temperature measurement online monitoring IED, a vibration online monitoring IED and a transformer oil gas chromatographic monitoring IED. The following steps are described in detail in connection with fig. 2:
In step 1, a controllable power module is installed in a comprehensive monitoring main cabinet, and the controllable power module is a 1U standard on-shelf cabinet.
In step 2, two grounding current sensors are commonly connected with a controllable power module 1 channel, winding deformation monitoring IED power supply is connected with a controllable power module 2 channel, winding optical fiber temperature measuring IED is connected with a controllable power module 3 channel, vibration on-line monitoring IED is connected with a controllable power module 4 channel, two partial discharge on-line monitoring IEDs power supply is respectively connected with a controllable power module 5 channel and a controllable power module 6 channel, and in-oil chromatographic monitoring equipment power supply is connected with a controllable power module 7 channel. The controllable power supply module RS-485 is connected with the comprehensive monitoring equipment host.
In step 3, in the system software, the power supply channels of the respective sensor and monitoring IED are configured to be consistent with the actual physical connection.
In step 4, the comprehensive monitoring host is powered on, the system software polls the running states of all the sensors and the monitoring IEDs every 10 seconds, if the sensors or the monitoring IEDs have abnormal conditions of communication interruption, steps 6 and 7 are executed, and if no abnormal conditions exist, the comprehensive online monitoring device is continuously operated.
In step 5, the system software polls the running state of all the sensors and the monitoring IEDs every 10 seconds, if the sensors or the monitoring IEDs have abnormal conditions with non-updated numerical values, steps 6 and 7 are executed, and if no abnormal conditions exist, the comprehensive online monitoring device is continuously operated.
In step 6, the integrated on-line monitoring system software controls the anomaly sensor or monitors the power supply channel of the IED to be powered off.
In step 7, the integrated online monitoring system software automatically controls the abnormal sensor or the monitoring IED to be powered off for 10 minutes, and then the abnormal sensor or the monitoring IED is powered on again, so that the abnormal sensor or the monitoring IED is restarted.
In step 8, steps 6 and 7 are repeated, after the sensor or the monitoring IED is recovered to be normal, the comprehensive monitoring host is operated normally, otherwise, steps 6 and 7 are repeated again. And (3) repeating the steps 6 and 7 at most twice, if the sensor or the monitoring IED still has abnormality, the comprehensive online monitoring system software starts to have abnormality prompt, so as to prompt the operation and maintenance personnel whether the abnormality sensor or the monitoring IED needs to be replaced.
As an effect, the method and the device for monitoring the operation state of the IED in the integrated on-line monitoring device have the advantages that the operation state of the sensor or the monitoring IED in the integrated on-line monitoring device is monitored in real time, abnormal conditions are identified, a control strategy is automatically generated, and abnormal recovery of the sensor or the monitoring IED is realized through automatically controlling the controllable power supply module. And judging whether the sensor or the monitoring IED is abnormal or not through the link condition of the system software communicating with the sensor and the monitoring IED and the numerical update condition of the sensor and the monitoring IED. The restarting operation of the sensor or the monitoring IED is realized by controlling the on-off of the power supply channel of the controllable power supply module. The controllable power supply module is provided with 8 channels of controllable power supplies, wherein 1-4 channels are used for supplying 24V direct current, and 5-8 channels are used for supplying 220V alternating current power frequency. The controllable power module is communicated with the comprehensive monitoring host through RS-485, and the comprehensive monitoring host can control the power module in a communication mode. The comprehensive monitoring host monitors the abnormal conditions of the sensor and the monitoring IED once every 10 seconds, meanwhile, the time interval of the on-off of the controllable power supply module is 10 minutes, and the time interval is adjustable. The comprehensive monitoring host machine performs 2 times of power-off operation on the abnormal sensor or the monitoring IED at most, and the normal operation of the sensor or the monitoring IED can not be recovered after 2 times of power-off operation, so that the comprehensive monitoring host machine software can give up the control on the sensor or the monitoring IED.
The comprehensive online monitoring device based on the transformer is abnormal in operation due to operation environment or internal errors, and the traditional manual inspection mode can increase maintenance cost and can not discover the abnormality in time. And the on-off of the power management module is controlled by the comprehensive on-line monitoring system software to periodically detect the running states of the sensor and the monitoring IED, so that the operations such as power failure restarting of the sensor and the monitoring IED are realized. The comprehensive online monitoring system software diagnoses whether the system is dead or not by detecting the link condition of the communication ports of the sensor and the monitoring IED, and diagnoses whether the system is in false dead or not by detecting the numerical update condition of the sensor and the monitoring IED. The comprehensive online monitoring system software detects that the abnormality can automatically control the power supply channel of the sensor or the monitoring IED to cut off and supply power so as to realize the re-operation of the sensor or the monitoring IED.