CN203788052U - Relay protection voltage switching monitoring circuit - Google Patents
Relay protection voltage switching monitoring circuit Download PDFInfo
- Publication number
- CN203788052U CN203788052U CN201420125582.1U CN201420125582U CN203788052U CN 203788052 U CN203788052 U CN 203788052U CN 201420125582 U CN201420125582 U CN 201420125582U CN 203788052 U CN203788052 U CN 203788052U
- Authority
- CN
- China
- Prior art keywords
- female
- contact
- busbar
- selection relay
- isolating switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 10
- 238000012546 transfer Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The utility model relates to a relay protection voltage switching monitoring circuit, which comprises a busbar I isolation switch normally open contact, a busbar I voltage indicating lamp, a busbar I voltage switching relay without a reset coil, a busbar I voltage switching relay with a reset coil, a busbar I isolation switch normally closed contact, a resistor R1, a busbar II isolation switch normally open contact, a busbar II voltage indicating lamp, a busbar II voltage switching relay without a reset coil, a busbar voltage II switching relay with a reset coil, a busbar II isolation switch normally closed contact and a resistor R2. A series circuit formed by a contact of the busbar I voltage switching relay and a contact of the busbar II voltage switching relay is connected between a signal positive power supply and a switching input end for switching the relays to operate simultaneously, and a series circuit formed by a contact of the busbar I voltage switching relay with the reset coil and a contact of the busbar II voltage switching relay with the reset coil is connected to two ends of the former series circuit in series, thereby being convenient for the operating personnel to discover and process abnormal conditions in operation.
Description
Technical field
The utility model relates to a kind of relaying protection voltage and switches monitoring circuit.
Background technology
For the electric component connecting in double-bus configuration system; for example, in the time of two groups of bus fanout operations (bus-tie circuit breaker disconnection); in order to ensure that its primary system and electrical secondary system keep corresponding on voltage; to avoid protection or automatics malfunction, tripping, secondary voltage circuit claimed and automatics synchronously switches in company with operational mode of main electrical scheme.With deactivation voltage switching auxiliary relay after two auxiliary contact parallel connections of isolating switch, utilize its contact to realize the automatic switchover of voltage circuit.In recent years; because the voltage switching circuit mistake that the reasons such as isolating switch auxiliary contact contact problems, protection personnel wiring debugging cause is arranged side by side; cause protective device decompression, secondary to happen occasionally to problems such as the voltage transformer reverse charges once having a power failure; and harm is larger; cause protection tripping or malfunction, or the serious person and equipment harm.For example certain 220kv of 220kv transformer station system operation of falling bus; its voltage switches monitoring circuit by the female selection relay contact of I 1YQJ1, the female selection relay contact of II 2YQJ1; described two contacts are the relay tip of not being with maintenance; as shown in Figure 1; by all 220kv interval equipment by II mother to I imperial mother; when disconnection 220kv bus connection switch has a power failure to 220kv II section bus; the 220kv equipment protecting equipment of all operations sends " PT electric voltage exception " alarm signal, and 220kv I, the female PT secondary voltage of II all lose on inspection.Site inspection finds, in the voltage switching circuit of 220kv A-wire road 1YQJ relay and 2YQJ relay all in operate condition, thereby make the voltage switching circuit of the female voltage of 220kv I, II by A-wire road side by side.A-wire road operates in I mother, and in all voltage switching circuits, contact 1YQJ action connection is correct, and contact 2YQJ should not move.In subsequent examination, find that the normally closed auxiliary contact of the female isolation switch of this circuit II is because changing the connection that do not have not in place.At first line segregation by 220kv II mother to I imperial mother, the normally closed auxiliary contact of the female disconnecting link of this circuit II is not closed.Can find out from voltage switching circuit figure, the female selection relay of band involution coil form II is still in on-state, be not with the female selection relay of involution coil form II in off-state, " the female running indicator of II " do not work, and " transfer relay moves simultaneously " signal does not send.Therefore, 220kv I, the female PT secondary voltage of II get up side by side by the voltage switching circuit on A-wire road.In the operating process of falling bus, operations staff does not note bis-skies of the female PT of the II of power failure to cut-off out.In the time separating 220kv bus connection switch, the female secondary voltage of I, by putting side by side the female PT reverse charge of II to power failure, causes 220kv I, the tripping operation of the female PT secondary voltage of II air switch.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of relaying protection voltage and switches monitoring circuit, can reflect the state of auxiliary contact, is convenient to operations staff and monitors, removes a hidden danger in time; Be convenient to the timely unusual circumstance of operations staff and processing, select superior in quality isolating switch auxiliary contact, and strengthen the regular maintenance work to isolating switch, make it in shape.
Technical solution of the present utility model is:
A kind of relaying protection voltage switches monitoring circuit, comprise the female isolating switch normal opened contact of I of series connection, the female voltage indicator lamp of I, the not female selection relay 1YQJ1～1YQJ3 of the I with involution coil, the female selection relay 1YQJ4～1YQJ7 of I with involution coil, and the female isolating switch normally closed contact of the I of series connection and resistance R 1, described resistance I is connected on the involution coil of the female selection relay 1YQJ4～1YQJ7 of I with involution coil, and the common port of the female isolating switch normal opened contact of I and the female isolating switch normally closed contact of I is connected on positive supply, the female isolating switch normal opened contact of II of series connection, the female voltage indicator lamp of II, the not female selection relay 2YQJ1～2YQJ3 of the II with involution coil, the female selection relay 2YQJ4～2YQJ7 of II with involution coil, and the female isolating switch normally closed contact of the II of series connection and resistance R 2, the other end of described resistance R 2 is connected on the involution coil of the female selection relay 2YQJ4～2YQJ7 of II with involution coil, the common port of the female isolating switch normal opened contact of II and the female isolating switch normally closed contact of II is connected on positive supply, move to open at signal positive supply and transfer relay simultaneously and between end, be connected to the series loop being formed by the female selection relay contact 1YQJ1 of I and the female selection relay contact of II 2YQJ1, its special character is: another series loop being made up of the female selection relay contact 1YQJ5 of the I by with involution coil and the female selection relay contact of the II with involution coil 2YQJ5 in described series loop two ends parallel connection.
The beneficial effects of the utility model are:
On former series loop basis, then and connect another series loop of I with involution coil female selection relay contact 1YQJ5 and the female selection relay contact of the II with involution coil 2YQJ5 composition.Like this, if isolating switch energy normal conversion in operation, " transfer relay moves simultaneously " signal can automatic resetting, and when changing time not in place, and this signal can involution, is convenient to the timely unusual circumstance of operations staff and processing.
Brief description of the drawings
Fig. 1 is that former relaying protection voltage switches monitoring circuit schematic diagram;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 2, this relaying protection voltage switches monitoring circuit, comprise the female isolating switch normal opened contact 1 of I of series connection, the female voltage indicator lamp 1XD of I, the not female selection relay 1YQJ1～1YQJ3 of the I with involution coil, the female selection relay 1YQJ4～1YQJ7 of I with involution coil, and the female isolating switch normally closed contact 2 of the I of series connection and resistance R 1, the other end of described resistance R 1 is connected on the involution coil of the female selection relay 1YQJ4～1YQJ7 of I with involution coil, the common port of the female isolating switch normal opened contact 1 of I and the female isolating switch normally closed contact 2 of I is connected on positive supply, the female isolating switch normal opened contact 3 of II of series connection, the female voltage indicator lamp 2XD of II, the not female selection relay 2YQJ1～2YQJ3 of the II with involution coil, the female selection relay 2YQJ4～2YQJ7 of II with involution coil, and the female isolating switch normally closed contact 4 of the II of series connection and resistance R 2, described resistance R 2 is connected on the involution coil of the female selection relay 2YQJ4～2YQJ7 of II with involution coil, the common port of the female isolating switch normal opened contact 3 of II and the female isolating switch normally closed contact 4 of II is connected on described positive supply, move to open at signal positive supply 5 and transfer relay simultaneously and between end 6, be connected to the series loop that formed by the female selection relay contact 1YQJ1 of I and the female selection relay contact of II 2YQJ1 and by the female selection relay contact of the I with the involution coil 1YQJ5 being connected in series, another series loop of the female selection relay contact of II 2YQJ5 composition with involution coil, two series loop parallel connections.
Claims (1)
1. a relaying protection voltage switches monitoring circuit, comprise the female isolating switch normal opened contact of I of series connection, the female voltage indicator lamp of I, the not female selection relay 1YQJ1～1YQJ3 of the I with involution coil, the female selection relay 1YQJ4～1YQJ7 of I with involution coil, and the female isolating switch normally closed contact of the I of series connection and resistance R 1, described resistance I is connected on the involution coil of the female selection relay 1YQJ4～1YQJ7 of I with involution coil, and the common port of the female isolating switch normal opened contact of I and the female isolating switch normally closed contact of I is connected on positive supply, the female isolating switch normal opened contact of II of series connection, the female voltage indicator lamp of II, the not female selection relay 2YQJ1～2YQJ3 of the II with involution coil, the female selection relay 2YQJ4～2YQJ7 of II with involution coil, and the female isolating switch normally closed contact of the II of series connection and resistance R 2, the other end of described resistance R 2 is connected on the involution coil of the female selection relay 2YQJ4～2YQJ7 of II with involution coil, the common port of the female isolating switch normal opened contact of II and the female isolating switch normally closed contact of II is connected on positive supply, move to open at signal positive supply and transfer relay simultaneously and between end, be connected to the series loop being formed by the female selection relay contact 1YQJ1 of I and the female selection relay contact of II 2YQJ1, it is characterized in that: another series loop being formed by the female selection relay contact 1YQJ5 of the I by with involution coil and the female selection relay contact of the II with involution coil 2YQJ5 in described series loop two ends parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125582.1U CN203788052U (en) | 2014-03-20 | 2014-03-20 | Relay protection voltage switching monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125582.1U CN203788052U (en) | 2014-03-20 | 2014-03-20 | Relay protection voltage switching monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788052U true CN203788052U (en) | 2014-08-20 |
Family
ID=51324204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420125582.1U Expired - Lifetime CN203788052U (en) | 2014-03-20 | 2014-03-20 | Relay protection voltage switching monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532656A (en) * | 2016-08-22 | 2017-03-22 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Double-bus line protection method and device of integrating voltage switching |
| CN106712017A (en) * | 2017-03-30 | 2017-05-24 | 山东钢铁股份有限公司 | Double-bus secondary voltage switching circuit and self-holding circuit thereof |
-
2014
- 2014-03-20 CN CN201420125582.1U patent/CN203788052U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532656A (en) * | 2016-08-22 | 2017-03-22 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Double-bus line protection method and device of integrating voltage switching |
| CN106532656B (en) * | 2016-08-22 | 2019-06-25 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of the double-bus line protection method and device of integrated voltage switching |
| CN106712017A (en) * | 2017-03-30 | 2017-05-24 | 山东钢铁股份有限公司 | Double-bus secondary voltage switching circuit and self-holding circuit thereof |
| CN106712017B (en) * | 2017-03-30 | 2023-06-30 | 山东钢铁股份有限公司 | Double-bus secondary voltage switching circuit and self-holding circuit thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103023000A (en) | Power grid current limiting device, power grid current limiter and power grid current limiting system | |
| CN104333119B (en) | A kind of voltage parallel device with synchronized detection function | |
| CN203788052U (en) | Relay protection voltage switching monitoring circuit | |
| CN202585305U (en) | High voltage drop switch automatic disconnection device | |
| CN103311889A (en) | Manual switching protection circuit for dual power supplies | |
| CN203387153U (en) | Automatic power-off protection device for phase loss and zero-line deficiency | |
| CN203813514U (en) | Control loop for high-voltage circuit breaker | |
| CN104218457A (en) | Power distribution device and electric master system thereof | |
| CN103837826A (en) | System and method for identification of faulty region of high-voltage switch operating circuit | |
| CN103311921B (en) | A kind of power supply entering line switch and bus connection switch interlock connection circuit | |
| CN202864606U (en) | Elevator electric system safety return circuit | |
| CN202798126U (en) | Automatic switching system for uninterrupted power supply of PLC (programmable logic controller) | |
| CN204424884U (en) | Can recovery-type big current Fault Current Limiting Device | |
| CN110729716B (en) | Circuit for sharing auxiliary contact for double-bus inverted bus operation | |
| CN203930006U (en) | Non-full phase tester actuation time of a kind of portable beaker three-phase | |
| CN103532111A (en) | Incoming line and outgoing line protector of switching station | |
| CN204408004U (en) | Double loop power supply inlet wire switching device shifter | |
| CN204314645U (en) | A kind of low-voltage distribution system by screen break-make automaton | |
| CN203825144U (en) | Circuit for identifying broken line area of switch control circuit | |
| CN107809103A (en) | Lighning proof type residual current action breaker | |
| CN207442421U (en) | A kind of microcomputer protecting device | |
| CN201994588U (en) | Intelligent switch | |
| CN202600031U (en) | High-voltage line power loss alarm system | |
| CN104362578B (en) | Can reclosing RCCB | |
| CN205016847U (en) | But low -voltage switchgear of intelligent communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
|
| CX01 | Expiry of patent term |