CN202663192U - Detection and control integrated user boundary switch - Google Patents
Detection and control integrated user boundary switch Download PDFInfo
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- CN202663192U CN202663192U CN 201220253007 CN201220253007U CN202663192U CN 202663192 U CN202663192 U CN 202663192U CN 201220253007 CN201220253007 CN 201220253007 CN 201220253007 U CN201220253007 U CN 201220253007U CN 202663192 U CN202663192 U CN 202663192U
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Abstract
The utility model relates to the technical field of 10kV line fault analysis and location management equipment, and particularly discloses a detection and control integrated user boundary switch. The detection and control integrated user boundary switch comprises a detection module, a control module, a communication module, a time delay module, a boundary switch module and a backup power supply module, wherein the detection module, the communication module, the time delay module and the boundary switch module are respectively connected with the control module; and the boundary switch module is further connected with the backup power supply module. The detection and control integrated user boundary switch can automatically and directly eliminate single-phase-earthing faults and phase faults of a user in boundary, automatically memorize the time of the line faults, current values at the time of the line faults and fault properties and report fault information actively, and has the function of performing remote control on switch on and off in situ.
Description
Technical field
The utility model relates to the technical field of distribution network line fault analysis and orientation management equipment, refers in particular to a kind of measurement and control integration user demarcation switch.
Background technology
Along with the rapid growth of domestic economy and the people along with the rapid growth of domestic economy and the day by day raising of living standards of the people.Society also more comes also high to the requirement of power supply reliability.In China's urban power distribution network, overhead distribution occupies sizable ratio, and locate at overhead distribution user T contact (also being power supply department and user's responsibility separation), the boundary isolation switch generally only is installed as the circuit control appliance, fuse switch or circuit breaker are installed in the user transformers high-pressure side.When break down in the user inside that T connects; occur in the subscriber's drop road such as fault; though or fault occurs in the inboard that the user protects equipment; but when time limit and transformer station of electric company outlet protection operation time limit mismate are started in its relaying protection; all can cause the transforming plant protecting action, if nature of trouble is permanent, transformer station's unsuccessful reclosing; then the accident of a Middle Voltage will be that the whole piece distribution line has a power failure, and involve power failure thereby produce.In Japan, this class involves accident and accounts for 10% of power distribution network total number of accident amount, and in Beijing, this class involves the 20%-30% that accident accounts for the distrbution network total number of accident, in some city of China even up to more than 70%.
At present, 10kV overhead distribution to each user's branch line porch is being used outdoor pole top switch and isolating switch in a large number, but still has following limitation:
1, mostly is hand switch, is mainly used in the effect of normal minute, zygonema road load current and insulating power supply, do not have the function of automatism isolation user side accident.
Although 2, the load switching unit that some can isolated fault occurred in recent years, but can not directly excise for phase fault, after must waiting transformer station to trip, could isolate phase fault, then cause whole circuit instantaneous power-offs, this troubleshooting pattern, relatively poor for the selectivity of fault.
3, do not possess the reclosing function: and in view of the particularity of China's weather, transient fault is more, in case cause user 10kV to have a power failure, must carry out the artificial line walking localization of faults and fault type and carry out the fault eliminating, then carry out manual reclosing, restore electricity, the shortcoming of this troubleshooting pattern is that fault time that restores electricity is longer.
4, do not have an information transfer function: when breaking down, be unfavorable for that production unit knows location of fault in the very first time, delay troubleshooting time.
Summary of the invention
The purpose of this utility model be low for present 10kV overhead distribution demarcation switch automatic horizontal, do not possess the reclosing function and do not have a deficiency of information transfer function a kind of measurement and control integration user demarcation switch is provided.
The utility model is achieved by the following technical solution:
A kind of measurement and control integration user demarcation switch mainly comprises detection module, control module, communication module, time delay module, demarcation switch module and standby power supply module; Detection module, communication module, time delay module are connected with control module with the demarcation switch module and are connected, and the demarcation switch module also is connected with standby power supply module.
Above-described detection module comprises the testing circuit with external voltage transformer and built-in current instrument transformer, for detection of voltage and current.
Above-described control module comprises CPU internal processor and control circuit, for the treatment of detecting data, sending control command and memory action message.
Above-described communication module is used for receiving and transmission information, comprises data message and command information.
Above-described time delay module comprises the delay circuit that can set the different delayed time time.
Above-described demarcation switch module comprises the demarcation switch for user's branch line divide-shut brake, and has the automatic blocking function.
Above-described standby power supply module comprises the ultracapacitor back-up source, still can carry out the breaking operation of demarcation switch under the situation of 10kV line fault even circuit decompression.
In when, in the user circle single phase ground fault occuring when; after testing circuit detects the zero-sequence fault electric current (being that the zero-sequence current value surpasses the zero-sequence current definite value that sets); control module starts the time-delay timing; after timing surpasses zero-sequenceprotection action delay time set point; the execute protection action; control module makes the rapid separating brake of demarcation switch, excision user interface fault.For isolated neutral system or neutral by arc extinction coil grounding system, transformer station did not trip when single phase ground fault occured, and the judgement that the zero-sequenceprotection action delay time setting value of demarcation switch only need escape the transient earthing fault gets final product.For the Neutral Point Through Low Resistance system, when single phase ground fault occured, generally, trip protection can occur in transformer station, answer this, and the zero-sequenceprotection action delay time setting value of demarcation switch must be considered the time coordination with transformer station's zero-sequenceprotection.
In when, in the user circle phase fault occuring when; after testing circuit detects the phase fault electric current; control module is then remembered this over-current state; after the switch protection separating brake appears in transformer station; control module measures line voltage distribution less than the low-voltage lockout value at testing circuit, and phase current begins to start the separating brake timing during less than the latching current value.After timing time reaches the delay time setting value, when control module is judged the circuit with no pressure without stream, send the separating brake order and make the demarcation switch separating brake, carry out simultaneously locking, isolated fault.Behind transformer station's wire-outgoing breaker reclosing, user demarcation load switch is separating brake reliably, reaches the purpose of user-isolated fault zone.
The beneficial effects of the utility model are:
1, can automatically, directly excise user's single phase ground fault and phase fault in the boundary, avoid sole user's fault and protection mismate and involve the whole piece feeder line and have a power failure.
2, time, fault moment current value and the nature of trouble of the generation of automatic Memory line fault are so that emergency review.
3, after the demarcation switch action, only the responsibility user has a power failure, but and the active reporting fault message, make the Utilities Electric Co. can rapid clear and definite accident point, in time process.
4, can gather the electric current of loaded line, the real-time amount of voltage, the electric flux of accumulative total, and have communication function, and can transmit the electrical management center with detecting data, be conducive to the Real Time Monitoring of distant place load.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Embodiment:
A kind of measurement and control integration user demarcation switch mainly comprises detection module 1, control module 2, communication module 3, time delay module 4, demarcation switch module 5 and standby power supply module 6.Detection module 1, communication module 3, time delay module 4 and demarcation switch module are connected and are connected with control module 2 respectively, and demarcation switch module 5 also is connected with standby power supply module 6.Detection module 1 comprises the testing circuit with external voltage transformer and built-in current instrument transformer; Control module 2 comprise for the treatment of detect data, send control command and the memory action message CPU internal processor and control circuit; Time delay module 4 comprises the delay circuit that can set the different delayed time time; Demarcation switch module 5 comprises the demarcation switch for user's branch line divide-shut brake, and has the automatic blocking function; Standby power supply module 6 comprises the ultracapacitor back-up source that still can carry out the demarcation switch breaking operation under the situation that guarantees 10kV line fault even circuit decompression.
When in the user circle single phase ground fault occuring, after testing circuit detected the zero-sequence fault electric current, control module 2 started the time-delay timing; after timing surpasses zero-sequenceprotection action delay time set point; the execute protection action, control module 2 makes the rapid separating brake of demarcation switch, excision user interface fault.
In when, in the user circle phase fault occuring when; after testing circuit detects the phase fault electric current; this over-current state of 2 memories of control module; after the switch protection separating brake appears in transformer station; control module 2 measures line voltage distribution less than the low-voltage lockout value at testing circuit, and phase current begins to start the separating brake timing during less than the latching current value.After timing time reaches the delay time setting value, when control module is judged the circuit with no pressure without stream, send the separating brake order and make the demarcation switch separating brake, carry out simultaneously locking, isolated fault.Behind transformer station's wire-outgoing breaker reclosing, user demarcation load switch is separating brake reliably, reaches the purpose of user-isolated fault zone.
Claims (6)
1. measurement and control integration user demarcation switch, it is characterized in that: comprise detection module (1), control module (2), communication module (3), time delay module (4), demarcation switch module (5) and standby power supply module (6), detection module (1), communication module (3), time delay module (4) are connected 5 with the demarcation switch module) be connected with control module (2) respectively, demarcation switch module (5) also is connected with standby power supply module (6).
2. described measurement and control integration user demarcation switch according to claim 1 is characterized in that: described detection module (1) comprises having external voltage transformer and built-in current instrument transformer for detection of the testing circuit of voltage and current.
3. described measurement and control integration user demarcation switch according to claim 1 and 2 is characterized in that: described control module (2) comprises for the treatment of detecting data, sending CPU internal processor and the control circuit of control command and memory action message.
4. described measurement and control integration user demarcation switch according to claim 3, it is characterized in that: described time delay module (4) comprises the delay circuit that can set the different delayed time time.
5. according to claim 1,2 or 4 arbitrary described measurement and control integration user demarcation switches, it is characterized in that: described demarcation switch module (5) comprises for user's branch line divide-shut brake and demarcation switch with automatic blocking function.
6. described measurement and control integration user demarcation switch according to claim 5, it is characterized in that: described standby power supply module (6) comprises the ultracapacitor back-up source that still can carry out the demarcation switch breaking operation under the situation that guarantees 10kV line fault even circuit decompression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220253007 CN202663192U (en) | 2012-05-31 | 2012-05-31 | Detection and control integrated user boundary switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220253007 CN202663192U (en) | 2012-05-31 | 2012-05-31 | Detection and control integrated user boundary switch |
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| Publication Number | Publication Date |
|---|---|
| CN202663192U true CN202663192U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220253007 Expired - Lifetime CN202663192U (en) | 2012-05-31 | 2012-05-31 | Detection and control integrated user boundary switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263084A (en) * | 2015-09-18 | 2016-01-20 | 浙江胜必得汽车配件科技有限公司 | Self-protected electronic horn and automobile comprising self-protected electronic horn |
| CN108376965A (en) * | 2018-02-14 | 2018-08-07 | 广西思维奇电力工程咨询有限公司 | A kind of intelligent distributed feeder line fault of distribution network house dog processing method |
-
2012
- 2012-05-31 CN CN 201220253007 patent/CN202663192U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105263084A (en) * | 2015-09-18 | 2016-01-20 | 浙江胜必得汽车配件科技有限公司 | Self-protected electronic horn and automobile comprising self-protected electronic horn |
| CN105263084B (en) * | 2015-09-18 | 2019-04-12 | 浙江胜必得汽车配件科技有限公司 | Self-insurance's electronic horn and automobile comprising self-insurance's electronic horn |
| CN108376965A (en) * | 2018-02-14 | 2018-08-07 | 广西思维奇电力工程咨询有限公司 | A kind of intelligent distributed feeder line fault of distribution network house dog processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180628 Address after: 530007 4, building 1, Sheng Zhou science and Technology Park, 28 Gaoxin Road, Nanning High-tech Zone, the Guangxi Zhuang Autonomous Region. Patentee after: Guangxi Sheng Zhou Electric Power Technology Co., Ltd. Address before: 530003 the Guangxi Zhuang Autonomous Region Nanning hi tech Zone Five East Park Road 4 Software Park fourth floor Patentee before: Guangxi Zelong Electronic Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |