CN203825164U

CN203825164U - Detection platform for DC circuit breaker

Info

Publication number: CN203825164U
Application number: CN201420193093.XU
Authority: CN
Inventors: 裴军; 朱忠建; 张海龙; 邱中军; 周海东; 王成; 唐建; 张晨
Original assignee: Daqo Group Co Ltd
Current assignee: Jiangsu Daqo Kfine Electric Co Ltd
Priority date: 2014-04-18
Filing date: 2014-04-18
Publication date: 2014-09-10
Anticipated expiration: 2024-04-18

Abstract

The utility model discloses a detection platform for a DC circuit breaker. The detection platform comprises a circuit breaker auxiliary contact, a circuit breaker fault detection contact, a closing coil and an opening coil; and the circuit breaker auxiliary contact and the circuit breaker fault detection contact are disposed in a circuit breaker operating mechanism, the circuit breaker auxiliary contact is connected with a state detection device, the circuit breaker fault detection contact is connected with a fault detection device, the state detection device and the fault detection device are connected to a circuit breaker state monitoring module at the same time, the circuit breaker state monitoring module is connected with three PLC control modules, each PLC control module is connected with a relay and can control the corresponding relay to be switched on and off, and the relays are respectively connected with a closing coil, an opening coil and a fault alarm. The detection platform is advantageous in that the platform can detect various test states of the circuit breaker and complete a mechanical service life test of the circuit breaker; and a detection signal and a detection power supply can be provided for a mechanical characteristic test of the circuit breaker, and workload of the circuit breaker during debugging is greatly simplified.

Description

For the detection platform of DC circuit breaker

Technical field

The utility model relates to the detection platform that a kind of DC circuit breaker uses in debug process, specifically a kind of detection platform for DC circuit breaker.

Background technology

In supply network, isolating switch plays vital effect; Isolating switch is carrying out in the process of test mechanical life, and mechanical fault refuses as operating mechanism that to close and refuse point be more common problem; Traditionally in most cases, be that maintenance, as main, adopts traditional this method to have following shortcoming: to overhaul comparatively consuming time taking people as preventive maintenance; After maintenance, the reliability of isolating switch may reduce because of human factor; Can not reflect in real time the actual operating mode of isolating switch; Simultaneously owing to there is no special detection platform, isolating switch in the time of mechanical characteristic test as branch wire time, divide-shut brake speed and divide-shut brake synchronism, the relevant contacts of isolating switch need be connected to sensed signal sources, therefore can on isolating switch, be furnished with a large amount of circuits, cause very large difficulty to detection and the maintenance of circuit breaker system.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of various test modes that can detect isolating switch and completes breaker mechanical durability test and for the mechanical characteristic test of isolating switch provides detection signal and detects power supply, simplify the detection platform for DC circuit breaker of isolating switch workload in debug process.

In order to solve the problems of the technologies described above, detection platform for DC circuit breaker of the present utility model, comprise the auxiliary contacts of circuit breaker that can reflect breaker energy storage state arranging in circuit breaker operation mechanism, the circuit breaker failure that can reflect isolating switch deciliter state and whether refuse to close or refuse point fault detects contact and for receiving closing coil and the switching winding of detection signal, auxiliary contacts of circuit breaker is connected with a condition checkout gear, circuit breaker failure detects contact and is connected with a failure detector, condition checkout gear and failure detector are connected in State-Inspect of High-Voltage Circuit module simultaneously, State-Inspect of High-Voltage Circuit module connects three PLC control modules by cable respectively, each PLC control module connects respectively a relay and the relay that can control respectively separately cut-offs, described each relay connects respectively a closing coil, a switching winding and a fault alarm.

Described State-Inspect of High-Voltage Circuit module is connected on PC.

Described fault alarm is buzzer siren.

The utility model has the advantage of:

This platform can detect the various test modes of isolating switch, comprises point, "on" position, and fault trip state, completes breaker mechanical durability test; Can be in the time of breaker mechanical life test, detect its operating mechanism refuse close and refuse a point phenomenon, and start fault restoration and warning function; The mechanical characteristic test that can be isolating switch provides detection signal and detects power supply, has greatly simplified the workload of isolating switch in debug process; Simultaneously, in mechanical characteristic test, can provide control signal for the each servicing unit in isolating switch inside, for the indexs such as the branch wire time of isolating switch, speed, the two poles of the earth synchronism provide auxiliary detection condition; This detection platform complete function, electrical wiring is succinctly convenient, has improved efficiency and the reliability of isolating switch in testing process.

Brief description of the drawings

Fig. 1 is the structural representation of circuit breaker operation mechanism;

Fig. 2 is the schematic diagram of the utility model for the detection platform of DC circuit breaker.

Embodiment

Below in conjunction with the drawings and specific embodiments, the detection platform for DC circuit breaker of the present utility model is described in further detail.

As shown in the figure, detection platform for DC circuit breaker of the present utility model, comprise the auxiliary contacts of circuit breaker that can reflect breaker energy storage state 1 arranging in circuit breaker operation mechanism, the circuit breaker failure that can reflect isolating switch deciliter state and whether refuse to close or refuse point fault detects contact 3 and for receiving closing coil 4 and the switching winding 5 of detection signal, wherein, circuit breaker failure detects contact 3 and is connected with push rod 6 by linkage assembly, auxiliary contacts of circuit breaker 1 can trigger the switching-in spring 2 in circuit breaker operation mechanism, auxiliary contacts of circuit breaker 1 is connected with a condition checkout gear 7, circuit breaker failure detects contact 3 and is connected with a failure detector 8, condition checkout gear 7 and failure detector 8 are connected in State-Inspect of High-Voltage Circuit module 9 simultaneously, State-Inspect of High-Voltage Circuit module 9 connects PLC control module M1 by cable respectively, PLC control module M2 and PLC control module M3, PLC control module M1 connects a relay K 1 and can cut-off by pilot relay K1, PLC control module M2 connects a relay K 2 and can cut-off by pilot relay K2, PLC control module M3 connects a relay K 3 and can cut-off by pilot relay K3, relay K 1 connects a closing coil, relay K 2 connects a switching winding, relay K 3 connects a fault alarm, fault alarm has buzzer siren in loop, said State-Inspect of High-Voltage Circuit module 9 is connected on PC, can issue steering order by PC thus.

As shown in Figure 2, L is direct supply bus positive pole to concrete syndeton of the present utility model, and N is direct supply bus negative pole, and M1～M3 is PLC control module, and PC is remote computer; State-Inspect of High-Voltage Circuit module is come monitoring breaker combined floodgate, gate-dividing state or fault trip state by monitoring breaker condition checkout gear 7 and failure detector 8; Between State-Inspect of High-Voltage Circuit module 9 and pick-up unit, transmit data with communication modes; The communication signal of State-Inspect of High-Voltage Circuit module 9 is changed into electric signal by PLC control module M1, PLC control module M2 and PLC control module M3, and often open control inside or the conversion of normally closed contact, relay K 1, relay K 2 and relay K 1 are connected respectively with PLC control module M1, PLC control module M2 and PLC control module M3, and be connected in series with closing coil 4, switching winding 5, buzzer siren respectively, drive breaker mechanical part; This detection platform also can be tested by auxiliary detection breaker mechanic property, as detecting circuit-breaker switching on-off time, speed and not when the same period, PLC control module can provide trigger pip and test signal, realizes divide-shut brake, the energy storage of isolating switch and tests the low-voltage needing.

Its principle of work is as follows:

As shown in Figure 1 and Figure 2, this isolating switch detection platform auxiliary contacts of circuit breaker 1 after breaker energy storage completes turn-offs, and detection platform detects that, after this cut-off signals, closing coil 4 is opened in time delay; After feed motion, auxiliary contacts of circuit breaker 1 conducting, triggers again switching-in spring 2 and carries out energy storage; Circuit breaker failure detects contact 3 and detects current opening and closing state simultaneously, to determine whether to close a floodgate successfully: the unsuccessful phenomenon of refusing to close of closing a floodgate if occur, the State-Inspect of High-Voltage Circuit module 9 of this detection platform is sent to fault-signal PLC control module M3 operation troubles rejected program and starts buzzer siren; If normally close a floodgate, PLC control module M2 presses the delay time triggering switching winding 5 that PC sets, and carries out operating mechanism separating brake; If normal separating brake, auxiliary contact 1 detect isolating switch whether energy storage complete, thereby carry out cycle control.Because this experiment is to detect mechanical life, only need in PC program, input the mechanical endurance test number of times of regulation, this detection platform can realize automatically, unattended operation.

Claims

1. the detection platform for DC circuit breaker, it is characterized in that: comprise the auxiliary contacts of circuit breaker that can reflect breaker energy storage state (1) arranging in circuit breaker operation mechanism, the circuit breaker failure that can reflect isolating switch deciliter state and whether refuse to close or refuse point fault detects contact (3) and for receiving closing coil (4) and the switching winding (5) of detection signal, described auxiliary contacts of circuit breaker (1) is connected with a condition checkout gear (7), circuit breaker failure detects contact (3) and is connected with a failure detector (8), condition checkout gear (7) and failure detector (8) are connected in State-Inspect of High-Voltage Circuit module (9) simultaneously, State-Inspect of High-Voltage Circuit module (9) connects three PLC control modules by cable respectively, each PLC control module connects respectively a relay and the relay that can control respectively separately cut-offs, described each relay connects respectively a closing coil, a switching winding and a fault alarm.

2. according to the detection platform for DC circuit breaker claimed in claim 1, it is characterized in that: described State-Inspect of High-Voltage Circuit module (9) is connected on PC.

3. according to the detection platform for DC circuit breaker claimed in claim 1, it is characterized in that: described fault alarm is buzzer siren.