CN203503547U - 10kV transformer substation vacuum circuit breaker closing control circuit - Google Patents
10kV transformer substation vacuum circuit breaker closing control circuit Download PDFInfo
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- CN203503547U CN203503547U CN201320650835.2U CN201320650835U CN203503547U CN 203503547 U CN203503547 U CN 203503547U CN 201320650835 U CN201320650835 U CN 201320650835U CN 203503547 U CN203503547 U CN 203503547U
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Abstract
The utility model provides a 10kV transformer substation vacuum circuit breaker closing control circuit comprising a group of normally-opened contacts of a closing operation relay, a control coil of the closing operation relay, a circuit breaker linked switch, a group of normally-closed switches of a time relay, and a control coil of a closing relay, which are sequentially serially connected together. A time-delay circuit comprises a group of normally-opened contacts of the closing relay and a control coil of the time relay. In the control loop, the control circuit is serially connected with the time relay, and the control coil of the time relay is serially connected with the group of normally-opened contacts of the closing relay, and the control loop can be disconnected by setting the delayed time of the time relay, and therefore the coils of the closing relay and the closing maintaining relay can be prevented from being burned out after being electrified for a long time, and the safety and the reliability of the transformer substation vacuum circuit breaker closing control circuit can be effectively improved.
Description
Technical field
The utility model relates to a kind of contacting controling circuit, particularly a kind of vacuum circuit-breaker contacting controling circuit being used in 10kV transformer station.
Background technology
At present, electric power system 10kV transformer station major part has been transformed into Comprehensive Automation Sub-station, and all newly-built stations are all also Comprehensive Automation Sub-stations.Every Comprehensive Automation Sub-station, no matter be 35kV breaker closing control loop, or 10kV breaker closing control loop, all with contacting controling circuit.Transformer station at grid switching operation and circuit breaker emergency stop valve trip by the anomaly that often there will be breaker closing coil, closing contactor coil burnout.The generation of this type of anomaly not only can increase personnel's maintenance workload but also can extend interruption duration; Severe patient also can cause electrical fire accident, burns circuit breaker operation mechanism.Therefore formulate and effectively take precautions against and corrective measure, thoroughly avoid the generation that repeats of this type of anomaly, guarantee that grid switching operation carries out smoothly, guarantee reliability, the stability of supplying power for outside.
Closing coil or closing contactor coil are according to allowing moment by large current design, and whole combined floodgate system can be closed a floodgate successfully when normal in 1s, when closing coil or closing contactor coil lead to super-high-current for a long time, just easily burn coil.10kV vacuum circuit-breaker electromagnetic mechanism contactor coil is with 0.4A left and right electric current when closing a floodgate; As closing coil or closing contactor coil and latching relay long charged, be easy to burn out.Former 10kVkV vacuum circuit-breaker contacting controling circuit schematic diagram as shown in Figure 1.When closing a floodgate, when closing by hand switch S HJ or reclosing switch LJ2 moment closure, combined floodgate latching relay HBJ is because of self-sustaining, always charged, until circuit breaker linked switch DL disconnects.While closing a floodgate successfully, circuit breaker is in "on" position, and circuit breaker linked switch DL disconnects naturally.Due to a variety of causes, cause sometimes circuit breaker linked switch DL not disconnect in time, the latching relay HBJ that makes to close a floodgate is long charged, and closing relay HC is also long charged, is easy to burn out the coil of closing relay HC, combined floodgate latching relay HBJ; Because of closing relay, HC is long charged, and closing relay HC contact loop is also long charged, also easily burns out closing relay HC contact and making electromagnet; During due to combined floodgate, bus power switch provides 100A left and right electric current, at this moment also easily makes batteries loss.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of 10kV transformer station vacuum breaker closing control circuit that prevents the coil burnout of closing relay in circuit, combined floodgate latching relay.
For achieving the above object and other relevant objects, the utility model provides a kind of 10kV transformer station vacuum breaker closing control circuit, comprise and pass through respectively one group of normally opened contact of closing relay and control positive source, control anodal control bus and negative pole control bus that power supply connects, described anodal control bus, between negative pole control bus, be provided with a main control loop and a timing circuit in parallel, described main control loop comprises that successively the combined floodgate of series connection manages one group of normally opened contact of relay, combined floodgate is managed the control coil of relay, circuit breaker linked switch, one group of normally closed switch of the time relay, the control coil of closing relay, one group of normally opened contact that described combined floodgate is managed relay also with a reclosing switch in parallel, described timing circuit comprises one group of normally opened contact of the closing relay of connecting successively, the control coil of the time relay.
Preferably, one group of normally opened contact that described combined floodgate is managed relay also with a closing by hand switch in parallel.
Preferably, the described time relay (SJ) is the static type time relay.
As mentioned above, 10kV of the present utility model transformer station vacuum breaker closing control circuit has following beneficial effect: this control circuit time relay of connecting in control loop, and the control coil of the time relay is connected with one group of normally opened contact of closing relay, so just can by the delay time of setting-up time relay, make control loop disconnect, so just can avoid the coil of closing relay, combined floodgate latching relay to burn because of long charged, thereby can effectively improve the safety and reliability of transformer station's vacuum breaker closing control circuit.
Accompanying drawing explanation
The original transformer station of Fig. 1 vacuum breaker closing control circuit schematic diagram.
The circuit diagram of Fig. 2 the utility model embodiment.
Embodiment
By specific instantiation, execution mode of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.The utility model can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.
Refer to Fig. 1,2.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present utility model in a schematic way, satisfy and only show with assembly relevant in the utility model in graphic but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
As shown in Figure 2, the utility model provides a kind of 10kV transformer station vacuum breaker closing control circuit, it comprises anodal control bus and negative pole control bus, and anodal control bus is connected with control positive source+KM, control power supply-KM by one group of normally opened contact of closing relay HC respectively with negative pole control bus.Between anodal control bus, negative pole control bus, be provided with a main control loop and a timing circuit in parallel.Main control loop comprises that successively the combined floodgate of series connection manages one group of normally opened contact of relay HBJ, closes a floodgate and manage the control coil, circuit breaker linked switch DL, one group of normally closed switch of time relay sj, the control coil of closing relay HC of relay HBJ, and closing a floodgate, it is also in parallel with a reclosing switch LJ2 and a closing by hand switch S HJ to manage one group of normally opened contact of relay HBJ.Timing circuit comprises one group of normally opened contact of the closing relay HC connecting successively, the control coil of time relay sj.Time relay sj can adopt the SSJG-231A static type time relay.
This 10kV transformer station vacuum breaker closing control circuit is in when work, when combined floodgate, manages relay HBJ or reclosing switch LJ2 when closed, close a floodgate manage relay HBJ because of self-sustaining will be always charged.While closing a floodgate successfully, closing relay HC is in closure state, time relay sj starts timing, when time relay sj after the stipulated time disconnects, and then whole main control loop is disconnected, so just can make control coil, the combined floodgate of closing relay HC manage the control coil power-off of relay HBJ, thereby can prevent that the control coil because of lock relay HC, the long-time energising of control coil that combined floodgate is managed relay HBJ from being burnt.
The delay time of time relay sj can be set according to circuit breaker main technical detail, and the closing time of circuit breaker configuration electromagnetic operating mechanism is for being not more than 0.2s.If the delayed setting value that time relay sj is established approaches very much the closing time of circuit breaker, may make circuit breaker when not completing combined floodgate, relay normally-closed contact just disconnects closing circuit, affects the normal combined floodgate of circuit breaker; If the delayed setting that time relay sj is established is oversize, in operating breaker making process, as the reason because of above-mentioned analysis, just cannot protect closing coil not burnt.Therefore, through locale simulation experiment, prove, it is that 0.5～0.6s is comparatively suitable that time relay sj is set delayed setting value, has therefore adopted the delay time of 0.5s.
This control circuit time relay of connecting in control loop, and the control coil of the time relay is connected with one group of normally opened contact of closing relay, so just can by the delay time of setting-up time relay, make control loop disconnect, so just can avoid the coil of closing relay, combined floodgate latching relay to burn because of long charged, thereby can effectively improve the safety and reliability of transformer station's vacuum breaker closing control circuit.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (3)
1.Yi Zhong 10kV transformer station vacuum breaker closing control circuit, comprise and pass through respectively one group of normally opened contact of closing relay (HC) and control positive source (+KM), control anodal control bus and negative pole control bus that power supply (KM) connects, it is characterized in that: described anodal control bus, between negative pole control bus, be provided with a main control loop and a timing circuit in parallel, described main control loop comprises that successively the combined floodgate of series connection manages one group of normally opened contact of relay (HBJ), combined floodgate is managed the control coil of relay (HBJ), circuit breaker linked switch (DL), one group of normally closed switch of the time relay (SJ), the control coil of closing relay (HC), it is also in parallel with a reclosing switch (LJ2) that described combined floodgate is managed one group of normally opened contact of relay (HBJ), described timing circuit comprises that one group of normally opened contact of closing relay (HC) of series connection is successively, the control coil of the time relay (SJ).
2. 10kV according to claim 1 transformer station vacuum breaker closing control circuit, is characterized in that: it is also in parallel with a closing by hand switch (SHJ) that described combined floodgate is managed one group of normally opened contact of relay (HBJ).
3. 10kV according to claim 1 transformer station vacuum breaker closing control circuit, is characterized in that: the described time relay (SJ) is the static type time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650835.2U CN203503547U (en) | 2013-10-18 | 2013-10-18 | 10kV transformer substation vacuum circuit breaker closing control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650835.2U CN203503547U (en) | 2013-10-18 | 2013-10-18 | 10kV transformer substation vacuum circuit breaker closing control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203503547U true CN203503547U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320650835.2U Expired - Lifetime CN203503547U (en) | 2013-10-18 | 2013-10-18 | 10kV transformer substation vacuum circuit breaker closing control circuit |
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| Country | Link |
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| CN (1) | CN203503547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261531A (en) * | 2015-10-26 | 2016-01-20 | 国网河南灵宝市供电公司 | Multi-stroke realizing circuit and multi-stroke control method for circuit breakers |
| CN106340851A (en) * | 2016-09-14 | 2017-01-18 | 国网福建省电力有限公司 | Reclosing loop suitable for T connected small hydropower line |
-
2013
- 2013-10-18 CN CN201320650835.2U patent/CN203503547U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261531A (en) * | 2015-10-26 | 2016-01-20 | 国网河南灵宝市供电公司 | Multi-stroke realizing circuit and multi-stroke control method for circuit breakers |
| CN106340851A (en) * | 2016-09-14 | 2017-01-18 | 国网福建省电力有限公司 | Reclosing loop suitable for T connected small hydropower line |
| CN106340851B (en) * | 2016-09-14 | 2019-04-19 | 国网福建省电力有限公司 | A kind of reclosure loop reform connecing small power station's route suitable for T |
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Granted publication date: 20140326 |
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| CX01 | Expiry of patent term |