CN106208341A - A kind of one-end substation main power source or main transformer fault cause the bus rapidly self-healing method of no-voltage of entire station - Google Patents

A kind of one-end substation main power source or main transformer fault cause the bus rapidly self-healing method of no-voltage of entire station Download PDF

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Publication number
CN106208341A
CN106208341A CN201610617963.5A CN201610617963A CN106208341A CN 106208341 A CN106208341 A CN 106208341A CN 201610617963 A CN201610617963 A CN 201610617963A CN 106208341 A CN106208341 A CN 106208341A
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CN
China
Prior art keywords
power supply
voltage
load
bus
entire station
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Pending
Application number
CN201610617963.5A
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Chinese (zh)
Inventor
李国友
束洪春
毛拥军
董俊
孙志祥
赵煜
李红伟
时建锋
陈叶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Ruixun Electric Power Technology Co ltd
Kunming University of Science and Technology
Qujing Power Supply Bureau Yunnan Power Grid Co Ltd
Original Assignee
Nanjing Ruixun Electric Power Technology Co ltd
Kunming University of Science and Technology
Qujing Power Supply Bureau Yunnan Power Grid Co Ltd
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Application filed by Nanjing Ruixun Electric Power Technology Co ltd, Kunming University of Science and Technology, Qujing Power Supply Bureau Yunnan Power Grid Co Ltd filed Critical Nanjing Ruixun Electric Power Technology Co ltd
Priority to CN201610617963.5A priority Critical patent/CN106208341A/en
Publication of CN106208341A publication Critical patent/CN106208341A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Abstract

The present invention relates to a kind of one-end substation main power source or main transformer fault causes the bus rapidly self-healing method of no-voltage of entire station, belong to Automatization Technology in Transformer Substation field.When one-end substation main power source disappears or main transformer breaks down, whether it is no-voltage of entire station by logical judgment；If no-voltage of entire station, then locking routine automatic throw-in equipment of emergency power supply, automatic throw-in equipment of emergency power supply starts, Isolated Network System is carried out stabilizing determination, if Isolated Network System is stable, the most do not put into stand-by power supply, if system is unstable, then rapid off-the-line small power supply, and then put into 110kV side bus stand-by power supply, then carry out overload differentiation, if charge circuit power supply exceeds power supply feeding capacity, then start overload off-load, release inessential load successively according to load importance rate, until load current capacity is stable less than power source loads and Isolated Network System.This invention ensures that the reliability and stability that important load is powered.

Description

A kind of one-end substation main power source or main transformer fault cause the bus of no-voltage of entire station Rapidly self-healing method
Technical field
The present invention relates to a kind of one-end substation main power source or main transformer fault causes the bus of no-voltage of entire station the most certainly Curing method, belongs to Automatization Technology in Transformer Substation field.
Background technology
Along with socioeconomic development, people are more and more higher to the requirement of power supply reliability.Alternate power autocast fills Put, be after main power supply has an accident because of line fault or power supply itself and has a power failure, can the most automatically stand-by power supply be thrown Entering work, the user making working power be disconnected is unlikely to a kind of automaton having a power failure, and is widely used in 220kV and following In electric pressure system.What domestic application was more is to arrange single automatic throw-in equipment of emergency power supply, mainly realizes inlet wire, master Transformator, segmentation standby input function.For the different development characteristic of domestic electrical network, electric power enterprise, colleges and universities, designing unit etc. collect In standby throw at many electric power incoming lines, carry little be electrically accessed standby throwing, the aspects such as standby input of acting in collusion to make each other's confessions have carried out research.But for being typically single The 220kV one-end substation that line or double loop are powered, once power supply disappears, it will causes dead electricity of entirely standing, how can reply immediately soon Electricity, it is ensured that responsible consumer not dead electricity aspect research is less.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of one-end substation main power source or main transformer fault causes entirely The bus rapidly self-healing method of decompression of standing, to realize the rapidly self-healing to important load, ensures its reliability and stability.
The technical scheme is that a kind of one-end substation main power source or main transformer fault cause the mother of no-voltage of entire station Line rapidly self-healing method, when one-end substation main power source disappears or main transformer breaks down, by logical judgment be whether No-voltage of entire station；If no-voltage of entire station, then locking routine automatic throw-in equipment of emergency power supply, emergency power supply of bus automatic throw-in equipment merit Can start, Isolated Network System is carried out stabilizing determination, if Isolated Network System is stable, the most not put into stand-by power supply, if system is unstable, then Off-the-line small power supply rapidly, and then put into 110kV side bus stand-by power supply, then carry out overload differentiation, if charge circuit power supply Beyond power supply feeding capacity, then start overload off-load, release inessential load successively according to load importance rate, until negative Till charged current capacity is stable less than power source loads and Isolated Network System.
Specifically comprise the following steps that
The first step, carry out no-voltage of entire station judgement: when one-end substation main power source disappears or main transformer breaks down, by patrolling Collect and determine whether no-voltage of entire station, when meeting following two condition, it is judged that for no-voltage of entire station；
(1) I section of bus of 220kV, II section of bus equal three-phase no-voltage；
(2) switch 1, switch 2 equal no currents；
Second step: stabilizing determination: if no-voltage of entire station, locking routine automatic throw-in equipment of emergency power supply, emergency power supply of bus is automatic Feeding device start, by formula (1), Isolated Network System is carried out stabilizing determination, if low-pressure side bus voltage voltage high-set setting it Under, on the low definite value of voltage and bus frequency is on low frequency definite value, under high frequency definite value, then it is assumed that Isolated Network System is stable；
(1)
In formula,For the low definite value of voltage,For low-pressure side bus voltage,For voltage high-set setting,For Low frequency definite value,For bus frequency,For high frequency definite value；
If Isolated Network System is stable, the most do not put into stand-by power supply, if system is unstable, then rapid off-the-line small power supply, and then put into low Pressure side bus stand-by power supply；
3rd step: overload differentiates: in the recovery process of 110kV side bus voltage, after 110kV in-put of spare power supply, be anti- Only stand-by power supply overload, ensures that power supply is stable, needs judgement system whether overload.When low-pressure side bus block switch When combined floodgate and low-pressure side in-put of spare power supply, all charge circuit electric current sums are more than power circuit current ration and charge circuit Actual current is more than charge circuit load current definite value, then be judged to that charge circuit power supply is beyond power supply feeding capacity；Then open Dynamic overload off-load, releases inessential load successively according to load importance rate, until load current capacity is born less than power supply Till load and Isolated Network System are stablized.
The invention has the beneficial effects as follows:
(1) 220kV one-end substation is because of 220kV power supply only one of which, it is impossible to uses automatic throw-in equipment of emergency power supply, and is loaded on The automatic throw-in equipment of emergency power supply of 110kV side, the dead electricity caused that disappears power supply is the most helpless；
(2) input strategy of traditional automatic throw-in equipment of emergency power supply only accounts for local substation bus bar voltage or line electricity Stream, and do not account for the thermally-stabilised limit etc. of the capacity-load ratio of standby electricity source, circuit, if standby electricity source after load transfer Overload, it is likely that further result in failure propagation.
Accompanying drawing explanation
Fig. 1 is typical case's 220kV one-end substation structure chart of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, the invention will be further described.
Embodiment 1: powering as it is shown in figure 1, transformer station is two main transformers, main transformer high-pressure side is 220kV voltage Grade, main transformer low-pressure side is 110kV electric pressure.
A kind of one-end substation main power source or main transformer fault cause the bus rapidly self-healing method of no-voltage of entire station, work as end When end transformer station main power source disappears or main transformer breaks down, whether it is no-voltage of entire station by logical judgment；If no-voltage of entire station, Then locking routine automatic throw-in equipment of emergency power supply, automatic throw-in equipment of emergency power supply starts, stably sentences Isolated Network System Not, if Isolated Network System is stable, the most do not put into stand-by power supply, if system is unstable, then rapid off-the-line small power supply, and then put into 110kV side bus stand-by power supply, then carries out overload differentiation, if charge circuit power supply is beyond power supply feeding capacity, then starts Overload off-load, releases inessential load successively according to load importance rate, until load current capacity is less than power source loads And till Isolated Network System is stable.
Concretely comprise the following steps:
The first step, carry out no-voltage of entire station judgement: when one-end substation main power source disappears or main transformer breaks down, by patrolling Collect and determine whether no-voltage of entire station, when meeting following two condition, it is judged that for no-voltage of entire station；
(1) I section of bus of 220kV, II section of bus equal three-phase no-voltage；
(2) switch 1, switch 2 equal no currents；
Second step: stabilizing determination: if no-voltage of entire station, locking routine automatic throw-in equipment of emergency power supply, emergency power supply of bus is automatic Feeding device start, by formula (1), Isolated Network System is carried out stabilizing determination, if low-pressure side bus voltage voltage high-set setting it Under, on the low definite value of voltage and bus frequency is on low frequency definite value, under high frequency definite value, then it is assumed that Isolated Network System is stable；
(1)
In formula,For the low definite value of voltage,For low-pressure side bus voltage,For voltage high-set setting,For Low frequency definite value,For bus frequency,For high frequency definite value；
If Isolated Network System is stable, the most do not put into stand-by power supply, if system is unstable, then rapid off-the-line small power supply, and then put into low Pressure side bus stand-by power supply；
3rd step: overload differentiates: when low-pressure side bus block switch combined floodgate and low-pressure side in-put of spare power supply, all loads Line current sum is more than charge circuit load current definite value more than power circuit current ration and charge circuit actual current, then It is judged to that charge circuit power supply is beyond power supply feeding capacity；Then overload off-load is started, according to load importance rate successively Release inessential load, until load current capacity is stable less than power source loads and Isolated Network System.
Above in association with accompanying drawing, the detailed description of the invention of the present invention is explained in detail, but the present invention is not limited to above-mentioned Embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to before without departing from present inventive concept Put that various changes can be made.

Claims (2)

1. one-end substation main power source or main transformer fault cause a bus rapidly self-healing method for no-voltage of entire station, its feature It is: when one-end substation main power source disappears or main transformer breaks down, whether be no-voltage of entire station by logical judgment；If No-voltage of entire station, then locking routine automatic throw-in equipment of emergency power supply, automatic throw-in equipment of emergency power supply starts, enters Isolated Network System Line stabilization differentiates, if Isolated Network System is stable, does not the most put into stand-by power supply, if system is unstable, then and rapid off-the-line small power supply, and then Put into 110kV side bus stand-by power supply, then carry out overload differentiation, if charge circuit power supply is beyond power supply feeding capacity, then Start overload off-load, release inessential load successively according to load importance rate, until load current capacity is less than power supply Till load and Isolated Network System are stablized.
One-end substation main power source the most according to claim 1 or main transformer fault cause the bus of no-voltage of entire station quick Self-healing method, it is characterised in that concretely comprise the following steps:
The first step, carry out no-voltage of entire station judgement: when one-end substation main power source disappears or main transformer breaks down, by patrolling Collect and determine whether no-voltage of entire station, when meeting following two condition, it is judged that for no-voltage of entire station；
(1) I section of bus of 220kV, II section of bus equal three-phase no-voltage；
(2) switch 1, switch 2 equal no currents；
Second step: stabilizing determination: if no-voltage of entire station, locking routine automatic throw-in equipment of emergency power supply, emergency power supply of bus is automatic Feeding device start, by formula (1), Isolated Network System is carried out stabilizing determination, if low-pressure side bus voltage voltage high-set setting it Under, on the low definite value of voltage and bus frequency is on low frequency definite value, under high frequency definite value, then it is assumed that Isolated Network System is stable；
(1)
In formula,For the low definite value of voltage,For low-pressure side bus voltage,For voltage high-set setting,For low Frequently definite value,For bus frequency,For high frequency definite value；
If Isolated Network System is stable, the most do not put into stand-by power supply, if system is unstable, then rapid off-the-line small power supply, and then put into low Pressure side bus stand-by power supply；
3rd step: overload differentiates: when low-pressure side bus block switch combined floodgate and low-pressure side in-put of spare power supply, all loads Line current sum is more than charge circuit load current definite value more than power circuit current ration and charge circuit actual current, then It is judged to that charge circuit power supply is beyond power supply feeding capacity；Then overload off-load is started, according to load importance rate successively Release inessential load, until load current capacity is stable less than power source loads and Isolated Network System.
CN201610617963.5A 2016-08-01 2016-08-01 A kind of one-end substation main power source or main transformer fault cause the bus rapidly self-healing method of no-voltage of entire station Pending CN106208341A (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN110854993A (en) * 2019-12-16 2020-02-28 国网辽宁省电力有限公司鞍山供电公司 Control method of automatic switching device of bus standby power supply
CN110912253A (en) * 2019-11-25 2020-03-24 广东电网有限责任公司 Low-voltage intelligent spare power automatic switching system
CN112186881A (en) * 2020-09-14 2021-01-05 深圳供电局有限公司 Optimized switching method and system for automatic switching device of standby power supply
CN112564119A (en) * 2020-12-11 2021-03-26 广东电网有限责任公司 Load transfer system control method and device
CN113193643A (en) * 2021-03-31 2021-07-30 深圳供电局有限公司 Spare power automatic switching device switching method and device based on transformer substation
CN113241773A (en) * 2021-05-24 2021-08-10 广东电网有限责任公司 Residential area power distribution operation control method and device

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US20120080942A1 (en) * 2010-10-04 2012-04-05 Carralero Michael A Smart microgrid
CN102522752A (en) * 2011-12-14 2012-06-27 天津大学 Optimization method for electric distribution network contract structure for improving power supply capacity
CN103296699A (en) * 2013-03-19 2013-09-11 昆明理工大学 Fast control method of planned isolated island power supply switching power balance based on wide range information
CN105449682A (en) * 2014-09-26 2016-03-30 贵州电网公司兴义供电局 Overload control method and coordination method of overload control and spare power automatic switch

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CN101951016A (en) * 2010-04-22 2011-01-19 广东电网公司 Wide area information-based automatic standby power supply switching adaptive modeling and controlling method
US20120080942A1 (en) * 2010-10-04 2012-04-05 Carralero Michael A Smart microgrid
CN102522752A (en) * 2011-12-14 2012-06-27 天津大学 Optimization method for electric distribution network contract structure for improving power supply capacity
CN103296699A (en) * 2013-03-19 2013-09-11 昆明理工大学 Fast control method of planned isolated island power supply switching power balance based on wide range information
CN105449682A (en) * 2014-09-26 2016-03-30 贵州电网公司兴义供电局 Overload control method and coordination method of overload control and spare power automatic switch

Cited By (10)

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Publication number Priority date Publication date Assignee Title
CN110912253A (en) * 2019-11-25 2020-03-24 广东电网有限责任公司 Low-voltage intelligent spare power automatic switching system
CN110854993A (en) * 2019-12-16 2020-02-28 国网辽宁省电力有限公司鞍山供电公司 Control method of automatic switching device of bus standby power supply
CN112186881A (en) * 2020-09-14 2021-01-05 深圳供电局有限公司 Optimized switching method and system for automatic switching device of standby power supply
CN112186881B (en) * 2020-09-14 2022-05-31 深圳供电局有限公司 Optimized switching method and system for automatic switching device of standby power supply
CN112564119A (en) * 2020-12-11 2021-03-26 广东电网有限责任公司 Load transfer system control method and device
CN112564119B (en) * 2020-12-11 2022-11-29 广东电网有限责任公司 Load transfer system control method and device
CN113193643A (en) * 2021-03-31 2021-07-30 深圳供电局有限公司 Spare power automatic switching device switching method and device based on transformer substation
CN113193643B (en) * 2021-03-31 2023-04-11 深圳供电局有限公司 Spare power automatic switching device switching method and device based on transformer substation
CN113241773A (en) * 2021-05-24 2021-08-10 广东电网有限责任公司 Residential area power distribution operation control method and device
CN113241773B (en) * 2021-05-24 2022-07-12 广东电网有限责任公司 Residential area power distribution operation control method and device

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Application publication date: 20161207