A kind of block sytemTechnical field
The present invention relates to a kind of outdoor ring main unit locking device.
Background technology
Electric-magnetic lock is the auxiliary contact utilizing circuit breaker, isolating switch, breaker cabinet door etc., is switched on or switched off the electromagnetic lock power supply such as isolating switch, cabinet door needing locking, makes its operating mechanism cannot action, thus realizes the mutual locking between switchgear.After event occurs, expert thinks through extensive investigation, the anti-error function existing defects of equipment, and can not play anti-error effect is the one of the main reasons causing having an accident.According to pertinent regulations, all high voltage electric equipments likely causing misoperation, all should install error-proof device and corresponding anti-error electric blocking loop.The implementation method of five anti-functions and feature.For manually operated switchgear, the general mechanical system that adopts reaches mechanical interlocking; Electrically operated switchgear assists the auxiliary contact in change over switch according to certain logical relation access control loop by circuit breaker, to realize operation interlocking.
In order to the needs of the tried out situation and safety in production of improving anti-misoperation locking, a kind of error proof locking system of microcomputer of the function element compositions such as master computer, computer key, electric coding lock, mechanical coding lock that utilizes is applied and promotes.Error proof locking system of microcomputer is by the auxiliary contact of circuit breaker, isolating switch, grounding switch, cabinet door, the locking realized by microcomputer coding lockset.Wherein locking comprises: mechanical latching is that the mechanical structure of switchgear operation mechanism restricts mutually, thus reaches the closedown mode of reciprocal interlocking.
Mostly be arranged on 35 kilovolts and following indoor equipment.In use, because auxiliary change over switch various reasons can not normally switch, and electromagnetic lock can not meet seal request and corrosion of making moist, and makes locking usually malfunctioning.Anti-misoperation locking to be realized to outdoor high voltage switchgear and mostly adopt electric logic locking.
The anti-misoperation locking device of production scene mainly realizes five anti-functions: prevent on-load, close isolating switch; Prevent line with ground from closing a floodgate; Prevent personnel's mistakenly entering charged chamber; Prevent by mistake point, falsely close circuit breaker; Prevent live connection of ground wire; And prevent non-synchronous arranged side by side.Realizing locking non-synchronous basic skills arranged side by side is realize the locking same period by pressure reduction and frequency difference identification apparatus, drops into synchronous fastener in time, two system non-Switching Synchronizations of powering to prevent non-synchronous in grid switching operation process.Electric loop logic blocking utilizes the auxiliary contact of the equipment such as circuit breaker, isolating switch to access on electric operating loops such as needing the isolating switch of locking or grounding switch, thus realize the mutual locking between switchgear.Feature is that secondary circuit is complicated, and installation, maintenance workload greatly, often need comrade's assistance or the compounding practice of maintenance, eliminate locking malfunctioning so that timely.The primary condition that it realizes is on electrically operated equipment mechanism.Current 330 kilovolts and following outdoor switch equipment adopt this type of locking device mostly, but practical operation situation is too large from dreamboat gap, principal element is that the sealing of auxiliary diverter switch is bad, corrosion and switching not in place etc.
Switchgear operation program or latching logic are carried out grid switching operation by software systems input program lockset, both: in the operational power source circuit of electrically operated disconnecting link or ground cutter mechanism case, add micro_computer five_proof contact, anti-error function is by temperature survey by c omputer complete independently.But require that temperature survey by c omputer will have anti-" idle running (leaking item in operating process) " measure.It is more that microcomputer that current Zhuhai company researches and develops, function comparatively perfect is latched in whole nation application.In error proof locking system of microcomputer use procedure, complex operation, speed are slowly and puzzle lock is not easily installed, use and popularization that deadlock phenomenon constrains it occur individually.
But easily there is misoperation in gen-lock, and the problem that operating procedure is complicated and security performance is low.
Summary of the invention
The present invention is exactly for the problems referred to above, provides a kind of and prevents misoperation, simple to operate and a kind of block sytem that security performance is good.
For achieving the above object, the present invention adopts following technical scheme, the present invention includes controller, inverter, warning system, supervisory control system, A/D modular converter, conversion system, preservation module, transport module, identification module and manipulator, it is characterized in that: described controller is connected with inverter with transport module, supervisory control system, A/D modular converter, and the output of inverter is connected with warning system; The output of supervisory control system connects the input of inverter, and the output of A/D modular converter connects conversion system successively and preserves module, and transport module is connected with manipulator by identification module.
As a kind of preferred version, controller of the present invention adopts single-chip microcomputer.
As another kind of preferred version, described conversion system is connected with transport module.
Beneficial effect of the present invention.
The present invention includes controller, inverter, warning system, supervisory control system, A/D modular converter, conversion system, preservation module, transport module, identification module and manipulator, described controller is connected with inverter with transport module, supervisory control system, A/D modular converter, and the output of inverter is connected with warning system; The output of supervisory control system connects the input of inverter, and the output of A/D modular converter connects conversion system successively and preserves module, and transport module is connected with manipulator by identification module.The idea of microcomputer anti-error is applied to ring main unit error-proof device, devise a kind of Novel outdoor interlocking apparatus for looped net cabinet, forbid when effectively ensure that high-voltage ring main unit is charged closing, closing earthed switch, reduce the misoperation probability that operating personnel are artificial, and simple to operate and security performance good.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Embodiment
As shown in the figure, the present invention includes controller, inverter, warning system, supervisory control system, A/D modular converter, conversion system, preservation module, transport module, identification module and manipulator, its structural feature is: described controller is connected with inverter with transport module, supervisory control system, A/D modular converter, and the output of inverter is connected with warning system; The output of supervisory control system connects the input of inverter, and the output of A/D modular converter connects conversion system successively and preserves module, and transport module is connected with manipulator by identification module.
As a kind of preferred version, controller of the present invention adopts single-chip microcomputer.
As another kind of preferred version, described conversion system is connected with transport module.
Computer key is most important part in whole locking device, and main task is that between responsible host computer administrative center and ring main unit disconnecting link state, uploading of information is assigned, and the operation to ring main unit lockset.Function comprises the operation order information that receives, electrical verification, unblanks.Operation order is used to be the important means that power department ensures electric power safety reliability service.At present, operation order is that not only speed is slow, and is easy to make mistakes by the manual formulation of work of transformer substation personnel mostly.Along with the development of computer technology, people have made many effort in microcomputer generating run ticket, make microcomputer generating run bill system development.Although typical operation bill system improves the formation speed of operation order, lack logic analysis function, cannot ensure the accuracy of operation order, and operation order form is single, range of application is limited to.