CN209608383U - A kind of secondary singal automatic switch-over circuit of double master tape bypasses - Google Patents
A kind of secondary singal automatic switch-over circuit of double master tape bypasses Download PDFInfo
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- CN209608383U CN209608383U CN201920143619.6U CN201920143619U CN209608383U CN 209608383 U CN209608383 U CN 209608383U CN 201920143619 U CN201920143619 U CN 201920143619U CN 209608383 U CN209608383 U CN 209608383U
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- main transformer
- type relay
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Abstract
The utility model discloses a kind of secondary singal automatic switch-over circuits of double master tapes bypass, including busbar protective device, for the operation of only main transformer interval when signal open the conventional sense weight motor type relay into detection, for main transformer interval and bypass interval while when running signal open the transition state weight motor type relay into detection, for only bypassing interval operation when signal open into detection for the heavy motor type relay of line state；Busbar protective device passes through weight motor type relay and extracts by-pass knife switch location information in double master tape bypasses, main transformer interval circuit breaker position information, bypass interval circuit breaker position information; switching for busbar protective device secondary singal; the automatic switchover for realizing main electrical scheme conventional sense, transition state and Dai Lu device improves the maintenance debugging efficiency and reliability of bus protection.
Description
Technical field
The utility model relates to a kind of secondary singal automatic switch-over circuits of double master tape bypasses, belong to electric system relay guarantor
Protect technical field.
Background technique
When Substation Bus Arrangement form is double-bus, double female double segmentations, double female single segmentations etc., circuit breaker failure is such as encountered
Or maintenance, corresponding interval needs to interrupt, especially when this be divided into transformer bay every when, will lead in the power supply of substation
It is disconnected, power supply reliability is reduced, is brought a negative impact to electric system.The Main connection form of double master tape bypasses is with the excellent of double mothers
Point, while can guarantee still to keep the power supply to other branches when main transformer switch maintenance or failure, but this kind of mode at present
In secondary singal (alternating current, open entry loop and output circuit etc.) generally using manual operation, operating procedure is complicated, Yi Fa
Raw maloperation.
Summary of the invention
The purpose of the utility model is to overcome deficiencies in the prior art, provide a kind of secondary singal of double master tape bypasses
Automatic switch-over circuit can be improved debugging, the overhaul efficiency of bus protection, and it is same to guarantee that main transformer interval and bypass interval operate in
On bus.
In order to achieve the above objectives, the utility model adopts the following technical solutions realization: the two of a kind of double master tapes bypass
Secondary signal automatic switch-over circuit, including busbar protective device, for only main transformer interval operation when signal open the conventional shape into detection
State weight motor type relay, signal opens the transition state dynamic relay again into detection when running simultaneously for main transformer interval and bypass interval
Device is opened into detection for only bypassing signal when interval is run for line state weight motor type relay；
Conventional sense weight motor type relay output circuit, transition state weight motor type relay outputs circuit, Dai Luzhuan
The circuit of outputing of state weight motor type relay is electrically connected with busbar protective device respectively；
The busbar protective device acquires main transformer interval double-bus knife by the circuit of outputing of conventional sense weight motor type relay
Opening into signal for lock, outputs signal output main transformer interval relevant action signal according to conventional sense weight motor type relay；
The busbar protective device also acquires main transformer interval double-bus by the circuit of outputing of transition state weight motor type relay
Disconnecting link opens opening into signal into signal and bypass interval double-bus disconnecting link, outputs signal according to transition state weight motor type relay
Export main transformer interval relevant action signal and/or bypass interval relevant action signal；
The busbar protective device is also by outputing circuit acquisition bypass interval double-bus for line state weight motor type relay
Opening into signal for disconnecting link, outputs signal output bypass interval relevant action signal according to for line state weight motor type relay.
Further, the open entry loop of the conventional sense weight motor type relay includes the bypass at the main transformer interval being connected in series
The normally closed auxiliary node of disconnecting link, the normally closed auxiliary node of by-pass knife switch at bypass interval, the normally opened auxiliary node at main transformer interval and bypass
The normally closed auxiliary node at interval.
Further, the open entry loop of the transition state weight motor type relay includes the bypass at the main transformer interval being connected in series
Between the normally opened auxiliary node of disconnecting link, the normally opened auxiliary node of by-pass knife switch at bypass interval, the normally opened auxiliary node at main transformer interval, bypass
Every normally opened auxiliary node.
Further, the open entry loop of the generation line state weight motor type relay includes the bypass at the main transformer interval being connected in series
Between the normally opened auxiliary node of disconnecting link, the normally opened auxiliary node of by-pass knife switch at bypass interval, the normally closed auxiliary node at main transformer interval, bypass
Every normally opened auxiliary node.
Further, the signal of the busbar protective device opens double-bus disconnecting link and the side that main transformer interval is also connected with into end
The double-bus disconnecting link at road interval, the double-bus disconnecting link at a main transformer interval are connected with the double-bus disconnecting link at a bypass interval, are used
The method of operation is spaced in identification.
Further, conventional sense weight motor type relay output circuit, transition state weight motor type relay is outputed back
Circuit is outputed for line state weight motor type relay in road respectively include: for controlling the normally opened of acquisition main transformer A phase start failure protection signal
Node, the normally opened node for controlling acquisition main transformer B phase start failure protection signal are believed for controlling acquisition main transformer C phase start failure protection
Number normally opened node, for control acquisition main transformer three-phase start failure protection signal normally opened node and for control acquisition failure release
The normally opened node of lock signal is pressed off again,
The circuit of outputing of the conventional sense weight motor type relay further includes for controlling acquisition main transformer interval three-phase current
Normally opened node；
The circuit of outputing of the transition state weight motor type relay further includes for controlling acquisition main transformer interval three-phase current
The normally opened node of normally opened node and bypass interval three-phase current；
The circuit of outputing of the generation line state weight motor type relay further includes for controlling acquisition bypass interval three-phase current
Normally opened node；
Each normally opened node is opened with the signal of the busbar protective device respectively to be connect into end.
Further, conventional sense weight motor type relay output circuit, transition state weight motor type relay is outputed back
Road respectively further comprises: the normally opened node outputed for main transformer interval circuit breaker trip signal is jumped for main transformer interval failure shunt tripping
The normally opened node that lock signal is outputed；
Generation line state weight motor type relay output circuit, the circuit of outputing of transition state weight motor type relay is also wrapped respectively
It includes: for bypassing the normally opened node for being spaced circuit breaker trip signal and outputing, being outputed for bypassing interval failure shunt tripping trip signal
Normally opened node；
Each normally opened node outputs end connection with the signal of the busbar protective device respectively.
Compared with prior art, the utility model beneficial effect achieved is: bypassing main circuit by extracting double master tapes
The status information of middle disconnecting link realizes the automatic switchover of electrical secondary system signal, can be improved debugging, the overhaul efficiency of bus protection,
The series signals for the double-bus disconnecting link being spaced by using the double-bus disconnecting link and bypass at main transformer interval are as busbar protective device
Control foundation, guarantee main transformer interval and bypass interval operate on same bus, improve bus protection reliability of operation.
Detailed description of the invention
Fig. 1 is the main wiring diagram of double master tape bypasses；
Fig. 2 be conventional sense weight motor type relay open into, output the circuit diagram in circuit；
Fig. 3 be transition state weight motor type relay open into, output the circuit diagram in circuit；
Fig. 4 be for line state weight motor type relay open into, output the circuit diagram in circuit；
Fig. 5 is the wiring diagram of busbar protective device.
Specific embodiment
A kind of secondary singal automatic switch-over circuit of double master tape bypasses provided by the embodiment of the utility model, can be used in becoming
Hospital bus bar replaces the secondary singal of main transformer branch operation to automatically switch in power station, guarantees the transformation when transformer breaker overhauls
Device can continue to run and uninterrupted power supply, improve overhaul efficiency and operational reliability.The utility model embodiment uses three
A heavy motor type relay uses the tandem compound of the circuit breaker position of other female disconnecting link, main transformer branch breaker position and bypass branch
Enabling signal of the state as weight motor type relay, for the automatic switchover of busbar protective device secondary singal, three are moved relay again
Device is respectively used to realize main electrical scheme conventional sense, transition state and the automatic switchover for line state.
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
As shown in Figure 1, being the main wiring diagram of double master tape bypasses, comprising: main transformer interval and bypass interval, main transformer interval includes
Auxiliary node (including normally opened auxiliary node and the normally closed auxiliary node two of the by-pass knife switch 1-3G at main transformer interval, main transformer interval CB1
Kind form；When normally opened auxiliary node is quartile, main transformer interval breaker is represented as quartile state, normally opened auxiliary node is coincidence
When, main transformer interval breaker is represented as coincidence state；The state of the state of normally closed auxiliary node and normally opened auxiliary node phase always
Instead.), double-bus disconnecting link 1-1G, the 1-2G at main transformer interval.The circuit structure for bypassing interval is identical as main transformer interval, specifically, packet
Include the by-pass knife switch 2-3G at bypass interval, auxiliary node (including normally opened auxiliary node and the normally closed auxiliary node of bypass interval CB2
Two kinds of forms；When normally opened auxiliary node is quartile, main transformer interval breaker is represented as quartile state, normally opened auxiliary node is coincidence
When, main transformer interval breaker is represented as coincidence state；The state of the state of normally closed auxiliary node and normally opened auxiliary node phase always
Instead.), bypass interval double-bus disconnecting link 2-1G, 2-2G.
As shown in Fig. 2, be according to a kind of conventional sense weight motor type relay provided by the embodiment of the utility model open into, open
The circuit diagram in circuit out, signal when conventional sense weight motor type relay is run for only main transformer interval are opened into open entry loop packet
Include: the normally closed auxiliary node of by-pass knife switch 1-3G, the by-pass knife switch 2-3G at bypass interval at the main transformer interval of series connection are normally closed auxiliary
Help the normally closed auxiliary node of node, the normally opened auxiliary node at main transformer interval and bypass interval.It includes: for controlling that it, which outputs circuit,
Acquire main transformer interval three-phase current normally opened node Z1, for control acquire main transformer A phase start failure protection signal normally opened node Z2,
For controlling the normally opened node Z3 of acquisition main transformer B phase start failure protection signal, for controlling acquisition main transformer C phase start failure protection signal
Normally opened node Z4, the normally opened node Z5 of main transformer three-phase start failure protection signal is acquired and for controlling acquisition failure releasing for controlling
Press off the normally opened node Z6 of lock signal again, and for control output main transformer interval circuit breaker trip signal normally opened node Z7 and
For controlling the normally opened node Z8 for outputing main transformer interval failure shunt tripping trip signal.For control signal open into normally opened node
Z1, Z2, Z3, Z4, Z5, Z6 are opened with the corresponding signal of busbar protective device be electrically connected into end respectively, are outputed for controlling signal
Normally opened node Z1, Z1 output end with the corresponding signal of busbar protective device respectively and are electrically connected.
As shown in figure 3, be according to a kind of transition state weight motor type relay provided by the embodiment of the utility model open into, open
The circuit diagram in circuit out, transition state weight motor type relay for main transformer interval and bypass interval synchronization operation when signal open into,
Its open entry loop includes: the bypass knife of the normally opened auxiliary node of by-pass knife switch 1-3G at the main transformer interval of series connection, bypass interval
The normally opened auxiliary node of the normally opened auxiliary node of lock 2-3G, the normally opened auxiliary node at main transformer interval and bypass interval.It outputs circuit
It include: for controlling the normally opened node B1 of acquisition main transformer interval three-phase current, for controlling acquisition bypass interval three-phase current
Normally opened node B2, the normally opened node B3 for controlling acquisition main transformer A phase start failure protection signal, it is opened for controlling acquisition main transformer B phase
The normally opened node B4 of dynamic failure signal, the normally opened node B5 for controlling acquisition main transformer C phase start failure protection signal, it is adopted for controlling
Collect the normally opened node B6 of main transformer three-phase start failure protection signal and presses off the normally opened section of lock signal again for controlling acquisition failure releasing
Point B7, and for control output main transformer interval circuit breaker trip signal normally opened node B8, for control output bypass interval
The normally opened node B9 of circuit breaker trip signal, for controlling the normally opened node B10 for outputing main transformer interval failure shunt tripping trip signal
The normally opened node B11 for bypassing interval failure shunt tripping trip signal is outputed with for controlling.For control signal open into normally opened section
Point B1 ~ B7 is opened with the corresponding signal of busbar protective device respectively to be electrically connected into end, for control normally opened node B8 that signal outputs ~
B11 outputs end with the corresponding signal of busbar protective device respectively and is electrically connected.
As shown in figure 4, be according to a kind of generation line state weight motor type relay provided by the embodiment of the utility model open into, open
The circuit diagram in circuit out, for line state weight motor type relay for main transformer interval and bypass interval synchronization operation when signal open into,
Its open entry loop includes: the bypass knife of the normally opened auxiliary node of by-pass knife switch 1-3G at the main transformer interval of series connection, bypass interval
The normally opened auxiliary node of the normally opened auxiliary node of lock 2-3G, the normally closed auxiliary node at main transformer interval and bypass interval.It outputs circuit
It include: for controlling the normally opened node P1 of acquisition bypass interval three-phase current, for controlling acquisition main transformer A phase start failure protection signal
Normally opened node P2, for control acquisition main transformer B phase start failure protection signal normally opened node P3, for control acquisition main transformer C phase
The normally opened node P4 of start failure protection signal, the normally opened node P5 of main transformer three-phase start failure protection signal is acquired and for controlling for controlling
System acquisition failure releases the normally opened node P6 for pressing off lock signal again, and outputs bypass interval circuit breaker trip signal for controlling
Normally opened node P7 and for control output bypass interval failure shunt tripping trip signal normally opened node P8.It is opened for controlling signal
The normally opened node P1 ~ P6 entered is opened with the corresponding signal of busbar protective device respectively to be electrically connected into end, is outputed for controlling signal
Normally opened node P7, P8 output end with the corresponding signal of busbar protective device respectively and are electrically connected.
As shown in figure 5, be the wiring diagram of busbar protective device, using main transformer interval double-bus disconnecting link 1-1G 1-2G and
Bypass interval double-bus disconnecting link 2-1G 2-2G series signals as be spaced the method for operation identification.Busbar protective device is logical
Overweight motor type relay extracts by-pass knife switch location information, main transformer interval circuit breaker position information, bypass interval in double master tape bypasses
Circuit breaker position information, for the switching of busbar protective device secondary singal, realize main electrical scheme conventional sense, transition state and
For the automatic switchover of road device, the maintenance debugging efficiency and reliability of bus protection are improved.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (7)
1. a kind of secondary singal automatic switch-over circuit of double master tape bypasses, which is characterized in that including busbar protective device, for only
Signal opens the conventional sense weight motor type relay into detection, is spaced while running for main transformer interval and bypass when main transformer interval is run
When signal open into detection transition state weight motor type relay, for only bypass interval operation when signal open into detection for line state
Weight motor type relay；
Conventional sense weight motor type relay output circuit, transition state weight motor type relay outputs circuit, for line state weight
The circuit of outputing of motor type relay is electrically connected with busbar protective device respectively；
The busbar protective device acquires main transformer interval double-bus disconnecting link by the circuit of outputing of conventional sense weight motor type relay
It opens into signal, and signal output main transformer interval relevant action signal is outputed according to conventional sense weight motor type relay；
The busbar protective device also acquires main transformer interval double-bus disconnecting link by the circuit of outputing of transition state weight motor type relay
Open and open into signal and bypass interval double-bus disconnecting link into signal, and according to transition state weight motor type relay to output signal defeated
Main transformer interval relevant action signal and/or bypass interval relevant action signal out；
The busbar protective device is also by outputing circuit acquisition bypass interval double-bus disconnecting link for line state weight motor type relay
Open into signal, and according to for line state weight motor type relay output signal output bypass interval relevant action signal.
2. the secondary singal automatic switch-over circuit of double master tape bypasses according to claim 1, which is characterized in that the routine
The open entry loop of state weight motor type relay includes the normally closed auxiliary node of by-pass knife switch at the main transformer interval being connected in series, bypass interval
The normally closed auxiliary node of by-pass knife switch, main transformer interval normally opened auxiliary node and bypass interval normally closed auxiliary node.
3. the secondary singal automatic switch-over circuit of double master tape bypasses according to claim 2, which is characterized in that the transition
The open entry loop of state weight motor type relay includes the normally opened auxiliary node of by-pass knife switch at the main transformer interval being connected in series, bypass interval
The normally opened auxiliary node of by-pass knife switch, main transformer interval normally opened auxiliary node, bypass interval normally opened auxiliary node.
4. the secondary singal automatic switch-over circuit of double master tape bypasses according to claim 3, which is characterized in that the Dai Lu
The open entry loop of state weight motor type relay includes the normally opened auxiliary node of by-pass knife switch at the main transformer interval being connected in series, bypass interval
The normally opened auxiliary node of by-pass knife switch, main transformer interval normally closed auxiliary node, bypass interval normally opened auxiliary node.
5. the secondary singal automatic switch-over circuit of double master tape bypasses according to claim 1, which is characterized in that the bus
The signal of protective device opens the double-bus disconnecting link of double-bus disconnecting link and bypass interval that main transformer interval is also connected with into end, a master
The double-bus disconnecting link of changing distance is connected with the double-bus disconnecting link at a bypass interval, is spaced the method for operation for identification.
6. the secondary singal automatic switch-over circuit of double master tape bypasses according to claim 1, which is characterized in that the routine
State weight motor type relay output circuit, transition state weight motor type relay outputs circuit, opening for line state weight motor type relay
Circuit out respectively include: for controlling the normally opened node of acquisition main transformer A phase start failure protection signal, for controlling acquisition main transformer B phase
The normally opened node of start failure protection signal, the normally opened node for controlling acquisition main transformer C phase start failure protection signal are acquired for controlling
The normally opened node of main transformer three-phase start failure protection signal and the normally opened node for pressing off lock signal again for controlling acquisition failure releasing,
The circuit of outputing of the conventional sense weight motor type relay further includes for controlling the normally opened of acquisition main transformer interval three-phase current
Node；
The circuit of outputing of the transition state weight motor type relay further includes for controlling the normally opened of acquisition main transformer interval three-phase current
The normally opened node of node and bypass interval three-phase current；
The circuit of outputing of the generation line state weight motor type relay further includes for controlling the normally opened of acquisition bypass interval three-phase current
Node；
Each normally opened node is opened with the signal of the busbar protective device respectively to be connect into end.
7. the secondary singal automatic switch-over circuit of double master tape bypasses according to claim 6, which is characterized in that the routine
State weight motor type relay output circuit, the circuit of outputing of transition state weight motor type relay respectively further comprises: for main transformer interval
Normally opened node that circuit breaker trip signal is outputed, the normally opened node outputed for main transformer interval failure shunt tripping trip signal；
Generation line state weight motor type relay output circuit, the circuit of outputing of transition state weight motor type relay respectively further comprises:
For bypass interval circuit breaker trip signal output normally opened node, for bypass be spaced failure shunt tripping trip signal output it is normal
Open node；
Each normally opened node outputs end connection with the signal of the busbar protective device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143619.6U CN209608383U (en) | 2019-01-28 | 2019-01-28 | A kind of secondary singal automatic switch-over circuit of double master tape bypasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143619.6U CN209608383U (en) | 2019-01-28 | 2019-01-28 | A kind of secondary singal automatic switch-over circuit of double master tape bypasses |
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| Publication Number | Publication Date |
|---|---|
| CN209608383U true CN209608383U (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920143619.6U Active CN209608383U (en) | 2019-01-28 | 2019-01-28 | A kind of secondary singal automatic switch-over circuit of double master tape bypasses |
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| CN (1) | CN209608383U (en) |
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2019
- 2019-01-28 CN CN201920143619.6U patent/CN209608383U/en active Active
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