CN209170050U - A kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit - Google Patents
A kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit Download PDFInfo
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- CN209170050U CN209170050U CN201821958990.XU CN201821958990U CN209170050U CN 209170050 U CN209170050 U CN 209170050U CN 201821958990 U CN201821958990 U CN 201821958990U CN 209170050 U CN209170050 U CN 209170050U
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- breaker
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- monitoring circuit
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Abstract
The utility model discloses a kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit, relay SHJa is closed including hand, a distant place/switch handle S8 on the spot, breaker auxiliary contact S1LA, the switching handle S8 of a distant place/on the spot is parallel with switch knob S9 on the spot, hand closes relay SHJa and is parallel with is connected the combined floodgate monitoring circuit formed by jumping position supervisory relay, the end that picks out of combined floodgate monitoring circuit is provided with contact 4D113, the end that picks out that hand closes relay SHJa is provided with contact 4D114, breaker auxiliary contact S1LA by with contact 4D113, contact 4D114 connection, it can access the jump position open entry loop of protection device for circuit breaker.The problem of solving since the jump position open entry loop of protection device for circuit breaker has used combined floodgate monitoring circuit 1TWJa relay auxiliary contact, breaker protection caused to be unable to the location status of accurate judgement breaker under certain special operating condition.
Description
Technical field
The utility model relates to the secondary circuit of protective relaying device more particularly to a kind of breaker closing monitoring circuits.
Background technique
Extra-high voltage DC transmission system alternating-current field high-voltage circuitbreaker is the Important Components for forming DC transmission system, is to protect
The key equipment of direct current transportation safe and stable operation is demonstrate,proved, the correctness of secondary circuit directly influences the normal fortune of breaker
Row.High-voltage circuitbreaker secondary circuit specifically includes that sub-gate circuit, closing circuit, anti-jump loop, jumps position monitoring circuit, coincidence prison
Depending on circuit, pressure atresia circuit etc., the design in these circuits is highly developed.But since breaker operation cabinet and ontology are disconnected
The model of road device is different, causes the mentality of designing of closing circuit and jump position monitoring circuit and theory difference very big, scene is because closing a floodgate
Circuit and jump that monitoring circuit design in position is unreasonable to be led to equipment there are security risks to happen occasionally.
Closing circuit is the important component of secondary circuit, can a distant place or on the spot realize breaker combined floodgate.It is closing a floodgate
In circuit, it is generally designed combined floodgate monitoring circuit, monitoring circuit capable of emitting alarm signal when closing circuit breaks down.South
The breaker for the model 3AP2-FI that power grid ultra-high voltage converter station alternating-current field is produced using Siemens, is configured with Nan Rui
The model CZX-22R2 type control box of relay protection production.
According to EHV transmission company, south electric network Co., Ltd issue " about specification 220KV and the above voltage
Grade breaker three phases un identical protection and shutting-brake control and the notice for jumping position monitoring circuit " it requires " to newly-built and reorganization and expansion work
Journey, closing circuit of circuit breaker should use reclosing phase by phase mode, and the monitoring of breaker closing control loop should be monitored using TWJ split-phase,
And TWJ should be able to monitor the complete closing circuits such as " distant place/on the spot " switching handle, circuit breaker position node, closing coil ", root
According to requiring to closing circuit of circuit breaker and jump after position monitoring circuit is transformed, improved circuit is as shown in Figure 1.
Normal condition lower body anti-trip relay K75LA, energy storage relay auxiliary contact K12LA, ontology unbalanced three-phase lines
The auxiliary contact of the low relay auxiliary contact K10 of relay auxiliary contact K61, pressure is closed, and breaker is breaking in quartile
The normally closed auxiliary contact closure of device auxiliary contact S1LA, a distant place/for switching handle S8 at " distant place " position, jump position monitors relay on the spot
Device 1TWJa, 2TWJa, 3TWJa excitation, complete closing circuit can be monitored by jumping position monitoring circuit.Anti-trip relay K75LA exists
After the completion of breaker closing, excitation when the normally opened auxiliary contact of breaker auxiliary contact S1LA is closed, anti-trip relay K75LA auxiliary
Contact is opened, and closing circuit is cut off, and anti-trip relay K75LA auxiliary contact recloses after closing pulse disappearance, to play
The effect for preventing breaker from jumping.In CZX-22R2 control box, a distant place issues combined floodgate order or breaker protects sending
Reclosing order excitation SHJa relay, SHJa auxiliary contact closure, in place to breaker closing, breaker auxiliary contact S1LA
Normally closed auxiliary contact is opened, and hand closes relay SHJa relay loss of excitation, and combined floodgate positive electricity disappears.
In CZX-22R2 control box, combined floodgate monitoring circuit 1TWJa relay auxiliary contact accesses protection device for circuit breaker
" jump position open into " circuit, for reflecting the division position of breaker, as shown in Figure 2.
During operation maintenance personnel carries out repair and maintenance to 3AP2-FI type secondary loop of breaker, find breaker in quartile
When " distant place/on the spot " switching handle is switched to " distant place " position, breaker protects reclosing rechargeable lamp bright.Breaker protection
Device reclosing charge condition are as follows: 1) tripping position relay TWJ is failure to actuate or route has stream；2) unstart is protected；3) it is discontented with
Lumping weight combined floodgate discharging condition [7].That is breaker protection will complete the charging of reclosing, breaker coincidence be necessary condition it
One.However breaker scene is practical in the case where quartile, protection device for circuit breaker can but complete reclosing charging, it is clear that
It is not consistent with on-site actual situations.The reason of causing this abnormal phenomenon, mainly " jumping due to protection device for circuit breaker
Position open into " circuit used combined floodgate monitoring circuit 1TWJa relay auxiliary contact, when closing circuit disconnects for some reason
When, 1TWJa relay loss of excitation, auxiliary contact is opened, and protection device for circuit breaker can not receive jump position and open into signal, judges breaker by accident
In coincidence, meet reclosing charge condition, reclosing rechargeable lamp is bright.There are following security risks for this abnormal phenomenon:
1, high-voltage circuitbreaker generally presses split-phase configuration, if breaker protection reclosing mode is " substance " mode, breaker
" distant place/on the spot " switching handle is switched to " distant place " position while quartile, breaker protection judge breaker in coincidence,
Reclosing rechargeable lamp is bright.During " distant place/on the spot " switching handle is switched to position " on the spot ", if the wherein contact card of two-phase
It is puckery can not normal switchback, wherein a mutually normal switchback, the circuit breaker position that breaker protection at this time receives is a phase quartile, two
Phase coincidence.Reclosing outlet logic is protected according to breaker, breaker protection at this time judges one phase jump of breaker, and breaker is protected
The breaker (practical without jump) of jump is closed in the outlet of shield reclosing, after breaker closes a phase, other two-phases also in quartile,
The operation of breaker unbalanced three-phase lines, after the delay being set, breaker body unbalanced three-phase lines actuating of relay tripping is closed
Breaker causes protection misoperation.
If 2, breaker protection reclosing mode is " triple " mode, breaker is while quartile " distant place/on the spot "
Switching handle is switched to " distant place " position, and breaker protection judges breaker in coincidence, and reclosing rechargeable lamp is bright." distant place/just
During ground " switching handle is switched to position " on the spot ", reclosing outlet logic is protected according to breaker, breaker protection is sentenced
Disconnected breaker three-phase jump, reclosing outlet close breaker three-phase, cause protection misoperation.
3, protection equipment judges inaccuracy to the live position of the switch, easily brings puzzlement to maintenance work.
Utility model content
The purpose of this utility model is to provide a kind of ultra-high voltage converter station breaker closing and position monitoring circuit is jumped, it can be with
It eliminates since " jump position open into " circuit of protection device for circuit breaker has used combined floodgate monitoring circuit 1TWJa relay auxiliary contact,
Breaker protection is caused to be unable to the security risk of the location status of accurate judgement breaker under certain special operating condition.
In order to achieve the above object, the technical scheme adopted by the utility model is that:
A kind of ultra-high voltage converter station breaker closing and position monitoring circuit is jumped, the hand including being sequentially connected in series closes relay
SHJa, a distant place/on the spot switch handle S8, breaker auxiliary contact S1LA, closing coil Y1LA, ontology anti-trip relay K75LA,
Energy storage relay auxiliary contact K12LA, ontology unbalanced three-phase lines relay auxiliary contact K61, the low relay auxiliary contact of pressure
K10, the switching handle S8 of the distant place/on the spot are parallel with switch knob S9 on the spot, if the hand close relay SHJa be parallel with by
It jumps a position supervisory relay for dry to connect the combined floodgate monitoring circuit to be formed, the end that picks out of the combined floodgate monitoring circuit is provided with contact
4D113, the end that picks out that the hand closes relay SHJa are provided with contact 4D114, and the breaker auxiliary contact S1LA passes through company
The contact 4D113, contact 4D114 are met, is connect with the jump position open entry loop of protection device for circuit breaker.
The jump position open entry loop of the protection device for circuit breaker includes the jump position supervisory relay for being connected to breaker, the jump
Three phase TwJA, TwJB, TwJC of position supervisory relay are corresponding with three phases of the breaker auxiliary contact S1LA respectively to be connected
It connects.
Compared with the prior art, the utility model has the following advantages:
Circuit device auxiliary contact S1LA is directly accessed protection device for circuit breaker jump position open entry loop by the utility model to be had
Following advantages:
1, it eliminates closing circuit of circuit breaker and jumps position monitoring circuit there are when abnormal conditions, protection device for circuit breaker can not
The security risk of accurate judgement breaker division position, prevents breaker protection misoperation.
2, when being related to breaker division position in relay protective scheme, it more can accurately reflect scene using the auxiliary contact of breaker
Circuit-breaker status, logic judgment are more acurrate.
3, combined floodgate monitoring circuit is served only for monitoring closing circuit of circuit breaker, uses " jump position open into " of breaker auxiliary contact
Circuit is served only for relay protective scheme judgement, and two return circuit independences avoid one of circuit abnormal and lead to another time
Road is abnormal.Protection equipment can normally send out " control loop template " alarm signal and remind O&M people when closing circuit occurs abnormal
Member, can be with normal exit although relay protective scheme is unaffected at this time, and due to closing circuit exception, protective device can not tripping
Respective circuit breakers, so that equipment damage will not be caused.
4, circuit is simple and clear, readily discernible analysis, and maintenance is simple.
Detailed description of the invention
Fig. 1 is 3AP2-FI type closing circuit of circuit breaker and jump position monitoring circuit figure.
Fig. 2 is that position open entry loop schematic diagram is jumped in breaker protection in the prior art.
Fig. 3 is that the utility model ultra-high voltage converter station breaker closing is opened with the breaker protection jump position for jumping position monitoring circuit
Entry loop schematic diagram.
Specific embodiment
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment:
It please refers to shown in Fig. 1, a kind of combined floodgate and jump position monitoring circuit suitable for 3AP2-FI type breaker, including jumps position
Supervisory relay 1TWJa, 2TWJa, 3TWJa, hand close relay SHJa, a distant place/switch handle S8, on the spot switch knob on the spot
S9, breaker auxiliary contact S1LA, closing coil Y1LA, ontology anti-trip relay K75LA, energy storage relay auxiliary contact
K12LA, ontology unbalanced three-phase lines relay auxiliary contact K61, the low relay auxiliary contact K10 of pressure monitor relay jumping position
The end that picks out of device 3TWJa is provided with contact 4D113, and the end that picks out that hand closes relay SHJa is provided with contact 4D114.
Hand conjunction relay SHJa, a distant place/cut on the spot are parallel to after jumping position supervisory relay 1TWJa, 2TWJa, 3TWJa series connection
It changes handle S8 and is parallel with switch knob S9 on the spot.
Hand is closed after relay SHJa closes a floodgate, by by breaker auxiliary contact S1LA and contact 4D113, contact 4D114
Circuit device auxiliary contact S1LA is directly accessed protection device for circuit breaker and jumps position open entry loop by connection, without by jumping position monitoring
Relay 1TWJa, 2TWJa, 3TWJa judge circuit breaker position state.The jump position open entry loop of protection device for circuit breaker includes
Be connected to the jump position supervisory relay of breaker, three phase TwJA, TwJB, TwJC of the jump position supervisory relay respectively with open circuit
Three phases of device auxiliary contact S1LA are correspondingly connected with.Circuit device auxiliary contact S1LA is directly accessed protection device for circuit breaker and jumps position
Open entry loop, so that logic judgment is more acurrate.It solves since " jump position open into " circuit of protection device for circuit breaker has used conjunction
Lock monitoring circuit 1TWJa relay auxiliary contact causes breaker protection to be unable to accurate judgement under certain special operating condition disconnected
The problem of location status of road device.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment is not to limit
The protection scope of the utility model, all equivalence enforcements or change without departing from carried out by the utility model, is intended to be limited solely by this case
In protection scope.
Claims (2)
1. a kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit, including the hand that is sequentially connected in series close relay SHJa,
A distant place/switch handle S8, breaker auxiliary contact S1LA, closing coil Y1LA, ontology anti-trip relay K75LA, energy storage on the spot
Relay auxiliary contact K12LA, ontology unbalanced three-phase lines relay auxiliary contact K61, the low relay auxiliary contact K10 of pressure,
The switching handle S8 of the distant place/on the spot is parallel with switch knob S9 on the spot, and the hand closes relay SHJa and is parallel with by several
It jumps position supervisory relay to connect the combined floodgate monitoring circuit to be formed, it is characterised in that: set at the end that picks out of the combined floodgate monitoring circuit
It is equipped with contact 4D113, the end that picks out that the hand closes relay SHJa is provided with contact 4D114, the breaker auxiliary contact
S1LA is connect by connecting the contact 4D113, contact 4D114 with the jump position open entry loop of protection device for circuit breaker.
2. ultra-high voltage converter station breaker closing according to claim 1 and jump position monitoring circuit, it is characterised in that: described
The jump position open entry loop of protection device for circuit breaker includes the jump position supervisory relay for being connected to breaker, the jump position supervisory relay
Three phases of three phase TwJA, TwJB, the TwJC respectively with the breaker auxiliary contact S1LA be correspondingly connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821958990.XU CN209170050U (en) | 2018-11-26 | 2018-11-26 | A kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821958990.XU CN209170050U (en) | 2018-11-26 | 2018-11-26 | A kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170050U true CN209170050U (en) | 2019-07-26 |
Family
ID=67340246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821958990.XU Active CN209170050U (en) | 2018-11-26 | 2018-11-26 | A kind of ultra-high voltage converter station breaker closing and jump position monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209170050U (en) |
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2018
- 2018-11-26 CN CN201821958990.XU patent/CN209170050U/en active Active
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