CN209608326U

CN209608326U - The high-voltage switch gear control loop prepared using high power relay

Info

Publication number: CN209608326U
Application number: CN201920194535.5U
Authority: CN
Inventors: 贾会超; 赵延良; 张兴; 陈飞; 宋强
Original assignee: Datang Suihua Thermal Power Co Ltd
Current assignee: Datang Suihua Thermal Power Co Ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2019-11-08
Anticipated expiration: 2029-02-13

Abstract

The high-voltage switch gear control loop prepared using high power relay.Often there is Microcomputer Protection control circuit board burning phenomenon during switch point, closing operation during debugging, there are security risks for station-service high-voltage switch gear.The utility model composition includes: major loop, DCS trip(ping) circuit (114) are in series in major loop, DCS closing circuit (116), timing circuit (117) and anti-jump current start circuit (118), DCS closing circuit keeps circuit (113) in parallel with anti-jump voltage, it includes anti-trip relay coil (112) that anti-jump voltage, which keeps circuit, the connection of the normally opened contact of anti-trip relay coil and anti-trip relay, timing circuit includes time-delay relay coil, time-delay relay coil is connect with the normally opened contact of closing relay (115), it is connect between time-delay relay coil and the normally opened contact of closing relay with the normally closed delay break contact of time-delay relay.The utility model is controlled for high-voltage switch gear.

Description

The high-voltage switch gear control loop prepared using high power relay

Technical field:

The utility model relates to a kind of high-voltage switch gear control loops prepared using high power relay.

Background technique:

6KV F-C type switch causes control loop to there is Microcomputer Protection in the design in construction period due to proposing money careless omission Control circuit board and Siemens switch switching on and off coil volume mismatch, often in switch point, closing operation process during debugging In there is Microcomputer Protection control circuit board burning phenomenon, for Auxiliary System after by electricity and unit operation, there is peace in station-service high-voltage switch gear Full hidden danger.

Utility model content:

The purpose of the utility model is to provide a kind of high-voltage switch gear control loops prepared using high power relay.

Above-mentioned purpose is realized by following technical scheme:

A kind of high-voltage switch gear control loop prepared using high power relay, composition includes: major loop, the master DCS trip(ping) circuit, DCS closing circuit, timing circuit and anti-jump current start circuit are in series in circuit, the DCS closes a floodgate Circuit keeps circuit in parallel with anti-jump voltage；

It includes anti-trip relay coil that the anti-jump voltage, which keeps circuit, the anti-trip relay coil and described The normally opened contact of anti-trip relay connects；

The timing circuit includes time-delay relay coil, the time-delay relay coil and closing relay it is normal Open contact connection, between the time-delay relay coil and the normally opened contact of the closing relay with the delay after The normally closed delay break contact of electric appliance connects.

The high-voltage switch gear control loop prepared using high power relay, the DCS trip(ping) circuit include jumping Lock relay coil, the tripping relay coil is connect with the normally opened contact of switch internal contactor, in the switch The normally opened contact of portion's contactor is connect with the normally opened contact of the closing relay.

The described high-voltage switch gear control loop prepared using high power relay, the DCS closing circuit include according to The normally-closed contact of secondary concatenated anti-trip relay, the normally-closed contact of tripping relay and closing relay coil.

The utility model has the advantages that

1. time-delay relay is arranged in the utility model, closing circuit electrification is kept by itself contact after K31 excitation, together When KT1 coil magnetization, the contact KT1 Time Delay Opening, using time relay contact by delay 0.5S act closing circuit, guarantee Combined floodgate reliability prevents closing circuit is long charged from causing element scaling loss.

Anti-trip relay is arranged in the utility model, and it acts as latch switches effective when closing, trip command existing simultaneously Control loop bears the circuit during switching on and off using intermediate relay large capacity contact string in switching on and off wire loop Electric current, anti-trip relay are played when outside moves at the same time switch division circuit, and the effective latch switch jump of control loop avoids Switch damages, and prevents from switching continuous division movement and 6kV is caused to switch burning damage accident.

Detailed description of the invention:

Attached drawing 1 is the circuit diagram of the utility model；

Attached drawing 2 is the circuit diagram that the utility model is connected in major loop；

In figure: 111, tripping relay coil；112 anti-trip relay coils；113, anti-jump voltage keeps circuit；114, DCS trip(ping) circuit；115, closing relay coil；116, DCS closing circuit；117, timing circuit；118, anti-jump current start Circuit.

Specific embodiment:

Embodiment 1:

A kind of high-voltage switch gear control loop prepared using high power relay, composition includes: major loop, the master DCS trip(ping) circuit 114, DCS closing circuit 116, timing circuit 117 and anti-jump current start circuit 118 are in series in circuit, The DCS closing circuit keeps circuit 113 in parallel with anti-jump voltage；

It includes anti-trip relay coil 112 that the anti-jump voltage, which keeps circuit, the anti-trip relay coil and institute The normally opened contact for the anti-trip relay stated connects；

The timing circuit includes time-delay relay coil, the time-delay relay coil and closing relay 115 Normally opened contact connection, prolong between the time-delay relay coil and the normally opened contact of the closing relay with described When relay normally closed delay break contact connection.

Embodiment 2:

According to the high-voltage switch gear control loop described in embodiment 1 prepared using high power relay, the DCS tripping Circuit includes tripping relay coil 111, and the tripping relay coil is connect with the normally opened contact of switch internal contactor, The normally opened contact of the switch internal contactor is connect with the normally opened contact of the closing relay.

Embodiment 3:

The high-voltage switch gear control loop prepared according to embodiment 1 or 2 using high power relay, the DCS Closing circuit includes the normally-closed contact for the anti-trip relay being sequentially connected in series, the normally-closed contact of tripping relay and closing relay line Circle 115.

For closing relay, its Egress node movement closing coil closes a floodgate after relay coil excitation.

For tripping relay, its Egress node movement opening coil carries out separating brake after relay coil excitation.

For time-delay relay, closing circuit electrification, while KT1 coil magnetization are kept by itself contact after K31 excitation, The contact KT1 Time Delay Opening prevents closing circuit is long charged from causing element scaling loss.

For anti-trip relay, it acts as latch switch control loops effective when closing, trip command existing simultaneously, and prevent Switching continuous division movement causes 6kV to switch burning damage accident.

The realization of closing function: in DCS after J0EBC10AJ001T001 ± contact closure, closing circuit positive potential passes through S9 55,56 contacts of (running position switch), TBJ-11,12 contacts, K30-8,9 contacts, BCJ-21,22 contacts, are combined floodgate relays Device K31 coil magnetization, K31-5,6 contact closures, switch internal contactor KM band electrical excitation realization closing function, while K31-3, 4 contact closures, KT1 band electrical excitation, KT1-10,11 contact Time Delay Openings make K31 coil loss of excitation, prevent closing circuit for a long time Band electrical excitation scaling loss switch KM coil.

The realization of trip avoidance function: in DCS after J0EBC10AJ001T002 ± contact closure, trip(ping) circuit passes through K31- on schedule 8,9 contacts, KM-8,18 contacts reach K30 tripping relay coil, and K30 relay excitation, K30-3,4 contacts and 5,6 contacts are closed It closes, positive potential reaches switch opening coil by 1,2 coils of TBJ, makes K2E, K2S excitation, switchs separating brake.

The realization of anti-bouncing function: when switch trip, 1, the 2 current coil excitations of TBJ start TBJ, TBJ coil 3,4 contacts Closure, 7, the 8 potential winding excitations of TBJ are simultaneously kept, and closing circuit is made to lose current potential, are prevented DCS conjunction, trip command while accidentally being sent out Switch conjunction, trip(ping) circuit while excitation when out, cause switch jump to cause the accident.

Former Microcomputer Protection control loop is substituted with the control loop that this relay is prepared, realizes normal point, closing operation, guarantor The functions such as shield, Stateful Inspection, while the safe and reliable operation of each component of switch has been effectively ensured in relay large capacity contact.

Claims

1. a kind of high-voltage switch gear control loop prepared using high power relay, composition includes: major loop, it is characterized in that: DCS trip(ping) circuit, DCS closing circuit, timing circuit and anti-jump current start circuit are in series in the major loop, it is described DCS closing circuit and anti-jump voltage keep circuit in parallel；It includes anti-trip relay coil that the anti-jump voltage, which keeps circuit, The anti-trip relay coil is connect with the normally opened contact of the anti-trip relay；

The timing circuit includes time-delay relay coil, the normally opened touching of the time-delay relay coil and closing relay Point connection, between the time-delay relay coil and the normally opened contact of the closing relay with the time-delay relay Normally closed delay break contact connection.

2. the high-voltage switch gear control loop according to claim 1 prepared using high power relay, it is characterized in that: described DCS trip(ping) circuit include tripping relay coil, the normally opened touching of the tripping relay coil and switch internal contactor Point connection, the normally opened contact of the switch internal contactor are connect with the normally opened contact of the closing relay.

3. the high-voltage switch gear control loop according to claim 1 prepared using high power relay, it is characterized in that: described DCS closing circuit include the normally-closed contact for the anti-trip relay being sequentially connected in series, tripping relay normally-closed contact and close a floodgate after Electric apparatus coil.