CN203774871U - Open-loop mode operation based hybrid networking power network system - Google Patents
Open-loop mode operation based hybrid networking power network system Download PDFInfo
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- CN203774871U CN203774871U CN201420070599.1U CN201420070599U CN203774871U CN 203774871 U CN203774871 U CN 203774871U CN 201420070599 U CN201420070599 U CN 201420070599U CN 203774871 U CN203774871 U CN 203774871U
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- terminal unit
- circuit breaker
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- 230000006855 networking Effects 0.000 title claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to an open-loop mode operation based hybrid networking power network system. The hybrid power distribution network is an open-loop mode operating circuit breaker and load switch hybrid power distribution network system. The power distribution network system comprises a plurality of substations and terminal units connected with the substations, wherein each of the terminal units comprises an intelligent controller and a communication module, an intelligent controller of each of the terminal units is connected with a circuit breaker or a load switch, the communication module of each of the terminal units is only connected and communicated with the adjacent terminal unit, and the intelligent controller of each of the terminal units collects voltage and flowing current of a circuit breaker or a load of the terminal unit itself and flowing current and fault information of the load switch or the circuit breaker of the adjacent terminal unit. The open-loop mode operation based hybrid networking power network system adopts a peer-to-peer communication network, the terminal units on the circuit are communicated with each other, fault information of the adjacent switch is collected, arbitration is carried out, and quick fault positioning and fault isolation are realized.
Description
Technical field
The utility model relates to a kind of for intelligent electric power network system, relates in particular to a kind of mixed networking electric power networks system based on open loop mode operation.
Background technology
Power distribution automation is the important component part of intelligent grid, for improving power supply reliability, expand power supply capacity and realize the high-efficiency and economic operation of electrical network significant.It is the core content of power distribution automation that distribution network failure is processed, and still, different according to the kind of the block switch of selecting and interconnection switch, the automation scheme of taking is also different.In traditional distribution system protection, when adopting on-load switch or breaker, any point fault on circuit, all needs transformer station's outlet breaker tripping operation, to remove fault.When line end fault, also can make the unnecessary impact of the load in paired transmission line leading portion and stage casing.When adopting circuit breaker or automatic circuit, if protection can be worked in coordination, fault can be excised on the spot, and this is more satisfactory scheme.In service in open loop, because circuit distance is shorter, short circuit current is all large especially, and cascaded switch is many, and in order to realize selectivity, outlet protection may need to set very long time delay, and this is definitely unallowed in actual motion.In this case, the rapidity of protection and selectivity are a pair of implacable contradiction.Meanwhile, when turning for after occurring, differential the becoming oppositely on whole piece main ring, cannot accurately locate isolated fault during line failure.
The essence of traditional distribution system current protection is an independently cell protection, and whether its only detect the action flowing through the electric current of institute's monitoring switch and determine protection and action delay, and is indifferent to the protection action situation of adjacent switch.If the scope of monitoring for protection is expanded to one group of switch that the switch that is connected is even connected by a point, the cooperation of the superior and the subordinate's protection can be understood as the internal coordination of protection.The pilot wire protection of the bus differential protecting of transformer station inside, transformer differential protection, high-pressure system, carrier current protection etc. are in order to realize the coordination of protection; the electric current of exactly different location (line of circuit both sides, transformer high-low-voltage both sides or three sides, bus etc.) being located is delivered to Yi Ge inspection center and is compared and differentiate, thereby realizes in district or the differentiation of external area error.If but by its application of principle to distribution line, will cause the complexity of power distribution protection and with high costs and lose Practical significance.
While breaking down on circuit, on-the-spot FTU delivers to control centre by fault message by communication port, control centre is according on off state, fault detect information, network topology analysis, failure judgement section, issue guidance command, carry out a series of automatic operations, reconstructed network, with the power supply of isolated fault and the non-fault section of recovery, this is so-called centralized intelligence.This scheme precise control, is applicable to various complication systems.But it need to have the computer soft and hardware system of reliable communication channel and control centre, and it is long to complete once " locating, isolate, turn confession " required time.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, and what provide a kind ofly responds that action is fast, terminal burden is light, the mixed networking electric power networks system based on open loop mode operation of system stability.
A kind of mixed networking electric power networks system based on open loop mode operation providing according to the utility model, described mixing distribution network system is circuit breaker and the on-load switch mixing distribution network system of open loop mode operation, described distribution network system comprises the terminal unit that a plurality of transformer stations are connected with described transformer station, described in each, terminal unit comprises intelligent controller and communication module, described in each, terminal unit is connected with circuit breaker or on-load switch, communication module described in each in terminal unit is only connected and communicates by letter with adjacent described terminal unit, intelligent controller described in each in terminal unit is collected circuit breaker in this terminal unit or the voltage of on-load switch, electric current and fault message that on-load switch in the electric current of flowing through and adjacent terminal unit or circuit breaker are flowed through.
A kind of mixed networking electric power networks system based on open loop mode operation providing according to the utility model also has following attached technical characterictic:
Communication module described in each in terminal unit is communicated by letter with adjacent described terminal unit by switch.
Described in each, terminal unit is provided with a plurality of three-phases or single-phase PT.
Described in each, circuit breaker connects one or more described on-load switches.
Described in each, terminal unit is connected with on-load switch with one or more described circuit breakers.
A kind of mixed networking electric power networks system based on open loop mode operation providing according to the utility model compared with prior art tool has the following advantages: the utility model adopts the communication network to equation, communication mutually between terminal unit on circuit, collect the fault message of adjacent switch, make arbitration, realize location fault and isolated fault fast.Possess following several large advantage: 1. speed is fast, to circuit, impact little.Because what the utility model adopted is proactive dissemination fault message, rather than the repeating query mode in the past adopting, thereby greatly saved the time.2. logical algorithm is simple and reliable.The logic criterion adopting only need be known the protection starting state of own and adjacent switch, simple and fast and very reliable.3. disobey rascal station.Because of without protection substation, dissolved that substation paralysis may bring risk.4. backup protection is provided.All switches of experiencing fault, if the own non-fault end of judgement proceeds to standby.Once end switch trips unsuccessfully, by back-up switch excision fault.5. strong adaptability.The electric network of electric pressures at different levels can easily be applicable to, and the syndeton of network and the operational mode of system needn't be worried.
Accompanying drawing explanation
Fig. 1 is distribution network reduced graph of the present utility model.
Embodiment
Referring to Fig. 1, a kind of mixed networking electric power networks system based on open loop mode operation providing at the utility model, described mixing distribution network system is circuit breaker and the on-load switch mixing distribution network system of open loop mode operation, described distribution network system comprises a plurality of ES1 of transformer station, the terminal unit that ES2 is connected with described transformer station, described in each, terminal unit comprises intelligent controller and communication module, described in each, intelligent controller is connected with circuit breaker or on-load switch, communication module described in each in terminal unit is only connected and communicates by letter with adjacent described terminal unit, intelligent controller described in each in terminal unit is collected circuit breaker in this terminal unit or the voltage of on-load switch, electric current and fault message that on-load switch in the electric current of flowing through and adjacent terminal unit or circuit breaker are flowed through.
For the terminal unit of controlling described circuit breaker, communicate by letter when normal or abnormal, when the intelligent controller described in each in terminal unit detects fault current, communicate by letter with adjacent described terminal unit, while not having fault current to flow out when there being fault current to flow into, illustrate that fault occurs in the switching range of this terminal unit control, the intelligent controller in this terminal unit starts fast tripping protection function or overcurrent protection function and also controls the circuit breaker trip in this terminal unit; When having fault current to flow into and fault current flows out, illustrate that fault does not occur in the switching range of this terminal unit control, the intelligent controller in this terminal unit is controlled circuit breaker in this terminal unit in backup status;
For the terminal unit of controlling described on-load switch; when communication is normal or abnormal; on-load switch self overcurrent; when very short time, internal fault electric current disappeared again; communicate by letter with adjacent described terminal unit, when there being fault current to flow into, do not have fault current to flow out, described on-load switch self decompression defluidization; start separating brake, otherwise be failure to actuate.Very short time in this process is generally the time of higher level's circuit breaker excision fault.
In the above-described embodiment providing at the utility model, circuit breaker S1, on-load switch T2, T3 are closed under normal condition, and circuit breaker S4 is in gate-dividing state, thus formation open loop mode of operation.Each ES1 of transformer station, ES2 are also provided with wire-outgoing breaker CB1, CB2.
The mixing power distribution network that the utility model provides refers to that circuit breaker and on-load switch mix use.Wherein on-load switch is under rated voltage and rated current.Only allow to switch on and off load current, but do not allow interrupting short circuit.When connection switch is on-load switch, he coordinates with higher level's circuit breaker, removes after fault the switch trip of fault both sides at higher level's switch.Circuit breaker is to carry or nonloaded line and electric equipment for having switched on and off, and while being short-circuited, and disengagement failure or again close a floodgate, can play the effect of control and protection two aspects automatically.When connection switch is circuit breaker, it can cut-off fault current after short trouble occurs, and requires to carry out one or many reclosing according to setting.In mixing electrical network, a circuit breaker can be with an on-load switch or a plurality of on-load switch.Each terminal unit can be controlled a circuit breaker or an on-load switch, also can be controlled at a plurality of circuit breakers or a plurality of on-load switch or circuit breaker and on-load switch mixed structure in this terminal unit, such as a ring main unit is set in each terminal unit, each terminal unit can be controlled all circuit breakers and the on-load switch in a ring main unit.Control principle and circuit breaker and on-load switch are similar, according to identical control principle, arrange.Circuit breaker that the utility model is given and on-load switch are for convenience of description and understand, as the most basic control unit, be not to restriction of the present utility model, those of ordinary skills can, according to the most basic control unit, extend in the control unit of a plurality of switches compositions.
The main criterion point of circuit breaker in the utility model: main criterion source is the fault current of circuit breaker itself and adjacent on-load switch or circuit breaker; that is: communicate by letter when normal or abnormal; when this breaker protection detects short circuit current, communicate by letter with adjacent on-load switch or breaker protection.When there being large electric current to flow into (as a side protection detects short circuit current), there is no large outflow of bus current when (as opposite side switch protection does not detect protective current), illustrate that fault occurs in this breaker protection district, start local protection quick-break tripping operation.Otherwise own only protection in support.
The main criterion point of on-load switch in the utility model: main criterion source is the fault current of on-load switch itself and adjacent circuit breaker or on-load switch, that is: when communication is normal or abnormal, the on-load switch of fault end self overcurrent, when very short time, (being generally the time of higher level's circuit breaker excision fault) internal fault electric current disappeared again, communicate by letter with adjacent circuit breaker or on-load switch protection, when there being large electric current to flow into (as a side protection detects short circuit current), there is no large outflow of bus current (as opposite side switch protection does not detect protective current); Self decompression defluidization, starts separating brake.Otherwise be failure to actuate.
Terminal unit of the present utility model is only communicated by letter with adjacent terminal unit, adopts distributed intelligence control mode, and the process information of each terminal unit reduces greatly, has alleviated the load of processor, the time under reach.
In the above-described embodiment providing at the utility model, the communication module described in each in terminal unit is communicated by letter with adjacent described terminal unit by switch.
In the above-described embodiment providing at the utility model, described in each, terminal unit is provided with a plurality of three-phases or single-phase PT.PT is voltage transformer.The present embodiment is 2.
In above-described embodiment that the utility model provides, described network system is open loop mode operation electric power networks system.Described network system can be various electric pressures.
Claims (5)
1. the mixed networking electric power networks system of moving based on open loop mode, described mixing distribution network system is circuit breaker and the on-load switch mixing distribution network system of open loop mode operation, described distribution network system comprises the terminal unit that a plurality of transformer stations are connected with described transformer station, it is characterized in that: described in each, terminal unit comprises intelligent controller and communication module, intelligent controller described in each in terminal unit is connected with circuit breaker or on-load switch, communication module described in each in terminal unit is only connected and communicates by letter with adjacent described terminal unit, intelligent controller described in each in terminal unit is collected circuit breaker in this terminal unit or the voltage of on-load switch, electric current and fault message that on-load switch in the electric current of flowing through and adjacent terminal unit or circuit breaker are flowed through.
2. the mixed networking electric power networks system based on open loop mode operation as claimed in claim 1, is characterized in that: the communication module described in each in terminal unit is communicated by letter with adjacent described terminal unit by switch.
3. the mixed networking electric power networks system based on open loop mode operation as claimed in claim 1, is characterized in that: described in each, terminal unit is provided with a plurality of three-phases or single-phase PT.
4. the mixed networking electric power networks system based on open loop mode operation as claimed in claim 1, is characterized in that: described in each, circuit breaker connects one or more described on-load switches.
5. the mixed networking electric power networks system based on open loop mode operation as claimed in claim 1, is characterized in that: described in each, terminal unit is connected with on-load switch with one or more described circuit breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070599.1U CN203774871U (en) | 2014-02-18 | 2014-02-18 | Open-loop mode operation based hybrid networking power network system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070599.1U CN203774871U (en) | 2014-02-18 | 2014-02-18 | Open-loop mode operation based hybrid networking power network system |
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| CN203774871U true CN203774871U (en) | 2014-08-13 |
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| CN201420070599.1U Expired - Lifetime CN203774871U (en) | 2014-02-18 | 2014-02-18 | Open-loop mode operation based hybrid networking power network system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868594A (en) * | 2015-05-20 | 2015-08-26 | 南京国电南自电网自动化有限公司 | Intelligent distributed feed line automation global data exchange method |
| CN105977931A (en) * | 2016-06-14 | 2016-09-28 | 璧垫椽 | Disconnected-null-line and default-phase protection apparatus and method, and power grid fault positioning apparatus |
| CN109245071A (en) * | 2018-11-12 | 2019-01-18 | 特变电工南京智能电气有限公司 | A kind of intelligent distribution type feeder automation distribution system and control method |
| CN109659918A (en) * | 2019-03-07 | 2019-04-19 | 国网江苏省电力有限公司扬州供电分公司 | A kind of synchronous phasor measurement wide-area differential protection system based on block chain |
-
2014
- 2014-02-18 CN CN201420070599.1U patent/CN203774871U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868594A (en) * | 2015-05-20 | 2015-08-26 | 南京国电南自电网自动化有限公司 | Intelligent distributed feed line automation global data exchange method |
| CN104868594B (en) * | 2015-05-20 | 2017-05-31 | 南京国电南自电网自动化有限公司 | Intelligent distribution type feeder automation global data exchange method |
| CN105977931A (en) * | 2016-06-14 | 2016-09-28 | 璧垫椽 | Disconnected-null-line and default-phase protection apparatus and method, and power grid fault positioning apparatus |
| CN109245071A (en) * | 2018-11-12 | 2019-01-18 | 特变电工南京智能电气有限公司 | A kind of intelligent distribution type feeder automation distribution system and control method |
| CN109659918A (en) * | 2019-03-07 | 2019-04-19 | 国网江苏省电力有限公司扬州供电分公司 | A kind of synchronous phasor measurement wide-area differential protection system based on block chain |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Fenjiang South Road, Chancheng District, Guangdong, No. 1, No. Patentee after: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Patentee after: BEIJING CREATIVE DISTRIBUTION AUTOMATION Co.,Ltd. Address before: 528000 Fenjiang South Road, Chancheng District, Guangdong, No. 1, No. Patentee before: FOSHAN POWER SUPPLY BUREAU, GUANGDONG POWER GRID Corp. Patentee before: BEIJING CREATIVE DISTRIBUTION AUTOMATION Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150928 Address after: 528000 Fenjiang South Road, Chancheng District, Guangdong, No. 1, No. Patentee after: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Patentee after: BEIJING CREATIVE DISTRIBUTION AUTOMATION Co.,Ltd. Patentee after: ELECTRIC POWER Research Institute CHINA SOUTHERN POWER GRID Address before: 528000 Fenjiang South Road, Chancheng District, Guangdong, No. 1, No. Patentee before: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Patentee before: BEIJING CREATIVE DISTRIBUTION AUTOMATION Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
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| CX01 | Expiry of patent term |