CN101504449A - Experiment tester for spare power automatic switching apparatus - Google Patents

Abstract

Translated fromChinese

本发明涉及一种备自投装置的试验测试仪，包括可调单相电流输出单元、模拟断路器单元、三相交流电压输出单元、辅助继电器、中央处理器和计算机，模拟断路器单元包括三只独立的模拟断路器及操作电源，每只模拟断路器具有对应的分闸和合闸指令输入端口、分闸和合闸设定端口以及输出常闭接点端口或常开接点端口，两控制开关及三只模拟断路器的各常开触头形成电压输出，中央处理器的公共端与操作电源连接、输出端分别与每只模拟断路器的分闸和合闸设定端口连接、电压控制端分别与两控制开关及辅助继电器的输入端连接，中央处理器与计算机连接，能产生试验所需的各种信号，具有结构简单，操作方便，能提高试验的工作效率的特点。

The present invention relates to a kind of test instrument for self-switching device, which comprises an adjustable single-phase current output unit, a simulated circuit breaker unit, a three-phase AC voltage output unit, an auxiliary relay, a central processing unit and a computer, and the simulated circuit breaker unit includes three Only independent analog circuit breaker and operating power supply, each analog circuit breaker has corresponding opening and closing command input port, opening and closing setting port and output normally closed contact port or normally open contact port, two control switches and three Only the normally open contacts of the simulated circuit breaker form a voltage output, the common terminal of the central processing unit is connected to the operating power supply, the output terminal is respectively connected to the opening and closing setting ports of each simulated circuit breaker, and the voltage control terminal is respectively connected to the two The control switch and the input terminal of the auxiliary relay are connected, and the central processing unit is connected with the computer, which can generate various signals required for the test. It has the characteristics of simple structure, convenient operation, and can improve the working efficiency of the test.

Description

The experiment tester of backup auto-activating device

Technical field

The present invention relates to a kind of experiment tester of backup auto-activating device, belong to electric system experimental test technical field.

Background technology

At present, backup auto-activating device has obtained extensive utilization in 110KV electric substation.But the verification to backup auto-activating device is comparatively complicated, because 110KV electric substation full cut-off chance is seldom, usually only can be to the part of stopping transport, and therefore throwing fully needs to use mimic-disconnecting switch to replace the switch of actual motion in the verification.The staff need take much time and go to remove the breaker tripping and closing that backup auto-activating device and switch in service interrelate on other protection screens in service and open into the amount circuit connection before the verification; test signal is by Microcomputer Protection test unit output current and voltage ac analog; and provide by the separate analogue isolating switch and to open into amount and the reception amount of leaving; test backup auto-activating device actuation time, reconnection one by one again after the off-test by the time test instrument again.Therefore equipment volume used in the existing backup auto-activating device test is huge, heavy, cost is high since in disconnection process the bigger risk of existence on the safety, operate loaded down with trivial details, wiring is complicated.

Summary of the invention

It is simple to the purpose of this invention is to provide a kind of wiring, easy to operate, the experiment tester of the backup auto-activating device that integrated level is high.

The present invention is that the technical scheme that achieves the above object is: a kind of experiment tester of backup auto-activating device, it is characterized in that: comprise adjustable single-phase current output unit, mimic-disconnecting switch unit, three-phase alternating voltage output unit, auxiliary relay, central processing unit and computing machine

Described adjustable single-phase current output unit comprises single-phase alternating current source and output controller, and the output terminal in single-phase alternating current source is connected with output controller, and output controller has the single-phase current output port;

Described mimic-disconnecting switch unit comprises three independently mimic-disconnecting switch DL1, DL2 and DL3 and operating powers, operating power is connected with the power end of every mimic-disconnecting switch respectively, and every mimic-disconnecting switch has corresponding separating brake and reclosing command input port, separating brake and combined floodgate setting port and output normally closed contact port or normal opened contact port;

Described three-phase alternating voltage output unit comprises three normally open contact A1, the A2 of three-phase alternating-current supply, two gauge tap K1 and K2 and three mimic-disconnecting switch DL1, DL2 and DL3 and the output loop that A3 forms, the open circuit normally open contact A1 of DL1 of gauge tap K1 and simulation is serially connected between three-phase alternating-current supply and the voltage output end U1, the normally open contact A2 of gauge tap K2 and mimic-disconnecting switch DL2 is serially connected between three-phase alternating-current supply and the voltage output end U2, and the normally open contact A3 of simulation road device DL3 is connected across the output terminal of normally open contact A1 and normally open contact A2;

Described auxiliary relay has main transformer fault output contact port;

The common port of described central processing unit is connected with operating power, output terminal is connected with combined floodgate setting port with the separating brake of every mimic-disconnecting switch respectively, voltage controling end is connected with the input end of gauge tap K1, K2 and auxiliary relay respectively, and the input/output end port of central processing unit is connected with the input/output end port of computing machine.

Backup auto-activating device of the present invention is made of adjustable single-phase current output unit, mimic-disconnecting switch unit, three-phase alternating voltage output unit, auxiliary relay, central processing unit and computing machine; the integrated level height; testing equipments such as bulky Microcomputer Protection tester, separate analogue isolating switch have been replaced; reduce the volume of pilot system greatly, reduce cost.The present invention is owing to have a plurality of interface end of backup auto-activating device test usefulness, and wiring is simple, does not need to test preliminary work, and is easy to operate, can simulate the pilot project of all backup auto-activating devices.

Description of drawings

Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.

Fig. 1 is a structured flowchart of the present invention.

Fig. 2 is the electrical schematic diagram of mimic-disconnecting switch of the present invention.

Fig. 3 is the structured flowchart of three-phase alternating-current supply of the present invention.

Fig. 4 is the electrical schematic diagram of three-phase alternating voltage output unit of the present invention.

Embodiment

See shown in Figure 1ly, the experiment tester of backup auto-activating device of the present invention comprises adjustable single-phasecurrent output unit 1, mimic-disconnectingswitch unit 5, three-phase alternatingvoltage output unit 2,auxiliary relay 6,central processing unit 4 andcomputing machine 3.

Adjustable single-phasecurrent output unit 1 of the present invention comprises single-phase alternating current source and output controller, the output terminal in single-phase alternating current source is connected with output controller, output controller has single-phase current output port I, provides test required 0～5A simulation load current by the single-phase current output port to backup auto-activatingdevice 7.

See shown in Figure 1, mimic-disconnecting switch of thepresent invention unit 5 comprises three independently mimic-disconnecting switch DL1, DL2 and DL3 and operating powers, operating power is connected with the power end of every mimic-disconnecting switch respectively, every mimic-disconnecting switch has corresponding separating brake, reclosing command input port, and separating brake, combined floodgate are set port and exported normally closed or the normal opened contact port.See shown in Figure 2, each mimic-disconnecting switch of the present invention includes closing relay J1 and separatingbrake relay J 2, on the loop of the normally closed interlock serial connection separatingbrake relay J 2 of closing relay J1, on the loop of the closing relay J1 of the normally closed interlock serial connection of separatingbrake relay J 2, and the interlock of the normally open contact of closing relay J1 and mimic-disconnecting switch.When the outside or inner closure earlier of closing a floodgate, closing relay J1 action, this moment is because the separating brake open circuit, the normally closed interlock closure of separatingbrake relay J 2, the normally open contact of closing relay J1 is by closing relay J1 self-sustaining, at this moment another normally open contact DL1 closure of closing relay J1 is exported normally closed signal; When the separating brake closure, 2 actions of separating brake relay J, the normally closed interlock open circuit of separatingbrake relay J 2, the self-sustaining oflock relay J 1 was lost efficacy, at this moment normally open contact DL1 opens a way, signal is often opened in output, the normally closed interlock closure of closing relay J1, and a normally open contact of separatingbrake relay J 2 can allow 2 self-sustainings of separating brake relay J.And when outside or inner separating brake elder generation closure, 2 actions of separating brake relay J, this moment is because the open circuit that closes a floodgate, the normally closed interlock closure of closing relay J1, a normally open contact of separatingbrake relay J 2 is by 2 self-sustainings of separating brake relay J, at this moment the normally open contact DL1 of separatingbrake relay J 2 open circuit is exported and is often opened signal; Closed if close a floodgate, closing relay J1 action, the normally closed interlock open circuit of closing relay J1, the self-sustaining of separatingbrake relay J 2 was lost efficacy, at this moment DL1 closure, export normally closed signal, the normally closed interlock closure of separatingbrake relay J 2, the normally open contact of closing relay J1 can allowrelay 1 self-sustaining.Make three mimic-disconnecting switches accept divide-shut brake instruction the carrying out divide-shut brake action of sending tested backup auto-activatingdevice 7 outsides, also receivecentral processing unit 4 and send inner default divide-shut brake instruction carrying out divide-shut brake action, and by output normally closed or normal opened contact port to tested backup auto-activatingdevice 7 output respective switch amounts.

See shown in Figure 2, the present invention also has normally closed switch failure contact C1 on closing relay J1, separatingbrake relay J 2 has the malfunctioning contact C2 of normally closed separating brake, when the mimic-disconnecting switch switch failure, mimic-disconnecting switch is response external and inner energization control signal not, when separating brake was malfunctioning, mimic-disconnecting switch is response external and inner separating brake control signal, mimic-disconnecting switch malfunction well not equally.

See shown in Figure 1ly, three-phase alternatingvoltage output unit 2 of the present invention comprises three normally open contact A1, the A2 of three-phase alternating-current supply, two gauge tap and three mimic-disconnecting switch DL1, DL2 and DL3 and the output loop that A3 forms.See shown in Figure 3, three-phase alternating current of the present invention source is made of sine-wave generator, phase shift circuit and power amplifier and isolating transformer, power amplifier adopts the OPA541 chip, maximum output current can reach 10A, actual output voltage is fed back to die terminals, realize the stability of output three-phase voltage.See Fig. 1, shown in 4, gauge tap K1 of the present invention and the normally open contact A1 that simulates the DL1 that opens circuit are serially connected in three-phase alternating-current supply and voltage output end U1, the normally open contact A2 string of gauge tap K2 and mimic-disconnecting switch DL2 is at three-phase alternating-current supply and voltage output end U2, the normally open contact A3 of simulation road device DL3 is connected across between the output terminal of normally open contact A1 and normally open contact A2, make mimic-disconnecting switch simulate interior ridge method fully, each normally open contact A1, A2 and A3 respectively with separately closing relay J1 interlock, form logical combination, the voltage that output is set by the gauge tap K2 and the normally open contact of respectively simulating the road device.And also be parallel with hand switch SK1 on the branch road open circuit being connected in series of normally open contact A1 of DL1 of gauge tap K1 and simulation, gauge tap K2 also is parallel with hand switch SK2 with being connected in series of normally open contact A2 of simulating the DL2 that opens circuit on the branch road, also can control the voltage that output is set manually.

Auxiliary relay 6 of the present invention has main transformer fault output contact port, at initiatively displacement of mimic-disconnecting switch, provide main transformer fault output contact byauxiliary relay 6, the original state of thisauxiliary relay 6 is open circuit, when pilot project begins any state of back three mimic-disconnecting switches when becoming " separating brake ", main transformer fault output contact state becomes closed 50～100 milliseconds, returns open-circuit condition then.

See shown in Figure 1ly, the common port ofcentral processing unit 4 of the present invention is connected with operating power, has the independent operation power supply in three mimic-disconnecting switches, thus only need link to each other with the divide-shut brake instruction input contact of backup auto-activating device, and need not to add operating power.Thiscentral processing unit 4 adopts the AVRAtmega128 single-chip microcomputer, and adopt uCOS-II as native system real-time operation software platform, because Atmega128 is the high SoC chip of a integrated level, the almost embedded required control modules of all native systems are so can realize multichannel control in real time and measurement.The output terminal ofcentral processing unit 4 is connected with the setting port that closes a floodgate with the separating brake of every mimic-disconnecting switch respectively, can be by the opening and closing state ofcomputing machine 3 default isolating switchs, the divide-shut brake instruction thatcentral processing unit 4 sends makes each mimic-disconnecting switch carry out the divide-shut brake action, the voltage controling end ofcentral processing unit 4 is connected with the input end of gauge tap K1, K2 andauxiliary relay 6 respectively, gauge tap K1, K2 make mimic-disconnecting switch simulate the electric system internal bridge fully, to produce the required analog quantity of test.The input/output end port ofcentral processing unit 4 is connected with the input/output end port ofcomputing machine 3,computing machine 3 is by USB interface andcentral processing unit 4 communications,computing machine 3 adopts notebook computer, transmission work order and object information, and the work order thatcentral processing unit 4analytical Calculation machines 3 transmit, and each mimic-disconnecting switch is controlled by two gauge tap,computing machine 3 passes through special software, each mimic-disconnecting switch original state and operating state can be set arbitrarily, and set malfunctioning node in advance, any fault mode of ridge method in the simulation, and the mimic-disconnecting switch action of each configuration of correspondence is safeguarded by sending into the host computer demonstration and preserving the sampling back constantly,central processing unit 4 receives U1, U2 output voltage state change instruction or certain mimic-disconnecting switch state change and promptly pick up counting, write down the time that all the other mimic-disconnecting switch states change, recording status changes situation simultaneously, and can form test report,computing machine 3 can export to test result information in the Excel document, is convenient to information integration and final-period management.

The present invention greatly provides the dirigibility of test owing to can satisfy the verification work of electric system internal bridge backup auto-activating device fully, and the integrated level height has improved production efficiency.

Claims (4)

Translated fromChinese

1、一种备自投装置的试验测试仪，其特征在于：包括可调单相电流输出单元、模拟断路器单元、三相交流电压输出单元、辅助继电器、中央处理器和计算机，1. A test instrument for self-switching devices, characterized in that: it includes an adjustable single-phase current output unit, an analog circuit breaker unit, a three-phase AC voltage output unit, an auxiliary relay, a central processing unit and a computer,所述的可调单相电流输出单元包括单相交流电流源和输出调节器，单相交流电流源的输出端与输出调节器连接，输出调节器具有单相电流输出端口；The adjustable single-phase current output unit includes a single-phase AC current source and an output regulator, the output terminal of the single-phase AC current source is connected to the output regulator, and the output regulator has a single-phase current output port;所述的模拟断路器单元包括三只独立的模拟断路器DL1、DL2和DL3以及操作电源，操作电源分别与每只模拟断路器的电源端连接，每只模拟断路器具有对应的分闸和合闸指令输入端口、分闸和合闸设定端口以及输出常闭接点端口或常开接点端口；The analog circuit breaker unit includes three independent analog circuit breakers DL1, DL2 and DL3 and an operating power supply, the operating power supply is respectively connected to the power supply end of each analog circuit breaker, and each analog circuit breaker has a corresponding opening and closing Command input port, opening and closing setting port and output normally closed contact port or normally open contact port;所述的三相交流电压输出单元包括三相交流电源、两只控制开关K1和K2及三只模拟断路器DL1、DL2和DL3的三个常开触头A1、A2和A3形成的输出回路，控制开关K1和模拟断路DL1的常开触头A1串接在三相交流电源与电压输出端U1之间，控制开关K2和模拟断路器DL2的常开触头A2串接在三相交流电源与电压输出端U2之间，模拟路器DL3的常开触头A3跨接在常开触头A1和常开触头A2的输出端；The three-phase AC voltage output unit includes an output circuit formed by three-phase AC power supply, two control switches K1 and K2 and three normally open contacts A1, A2 and A3 of three analog circuit breakers DL1, DL2 and DL3, The normally open contact A1 of the control switch K1 and the analog circuit breaker DL1 is connected in series between the three-phase AC power supply and the voltage output terminal U1, and the normally open contact A2 of the control switch K2 and the analog circuit breaker DL2 is connected in series between the three-phase AC power supply and the voltage output terminal U1. Between the voltage output terminals U2, the normally open contact A3 of the analog circuit device DL3 is connected across the output terminals of the normally open contact A1 and the normally open contact A2;所述辅助继电器具有主变故障输出接点端口；The auxiliary relay has a main transformer failure output contact port;所述中央处理器的公共端与操作电源连接、输出端分别与每只模拟断路器的分闸和合闸设定端口连接、电压控制端分别与控制开关K1、K2以及辅助继电器的输入端连接，中央处理器的输入/输出端口与计算机的输入/输出端口连接。The common terminal of the central processing unit is connected to the operating power supply, the output terminal is respectively connected to the opening and closing setting ports of each analog circuit breaker, and the voltage control terminal is respectively connected to the input terminals of the control switches K1, K2 and the auxiliary relay. The input/output port of the central processing unit is connected with the input/output port of the computer.2、根据权利要求1所述的备自投装置的试验测试仪，其特征在于：所述每只模拟断路器包括合闸继电器J1和分闸继电器J2，合闸继电器J1的常闭触头B1串接分闸继电器J2的回路上，分闸继电器J2的常闭触头B2串接的合闸继电器J1的回路上，且合闸继电器J1与模拟断路器的常开触头联动。2. The test instrument for automatic switch-on device according to claim 1, characterized in that: each simulated circuit breaker includes a closing relay J1 and an opening relay J2, and the normally closed contact B1 of the closing relay J1 The circuit of the opening relay J2 is connected in series, the normally closed contact B2 of the opening relay J2 is connected in series with the circuit of the closing relay J1, and the closing relay J1 is linked with the normally open contact of the analog circuit breaker.3、根据权利要求1所述的备自投装置的试验测试仪，其特征在于：所述的合闸继电器J1上还具有常闭的合闸失灵触头C1；分闸继电器J2具有常闭的分闸失灵触头C2。3. The test instrument for automatic switch-on device according to claim 1, characterized in that: the closing relay J1 also has a normally closed closing failure contact C1; the opening relay J2 has a normally closed Opening failure contact C2.4、根据权利要求1所述的备自投装置的试验测试仪，其特征在于：所述控制开关K1与模拟断路DL1的常开触头A1的串接支路上还并联有手动开关SK1，控制开关K2与模拟断路DL2的常开触头A2的串接支路上也并联有手动开关SK2。4. The test instrument for automatic switch-on device according to claim 1, characterized in that: a manual switch SK1 is also connected in parallel on the branch road of the series connection between the control switch K1 and the normally open contact A1 of the simulated disconnection DL1 to control A manual switch SK2 is also connected in parallel on the series connection branch of the switch K2 and the normally open contact A2 of the simulated disconnection DL2.

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