CN104578080A - Low-voltage treatment method for rural power grid - Google Patents
Low-voltage treatment method for rural power grid Download PDFInfo
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- CN104578080A CN104578080A CN201410791457.9A CN201410791457A CN104578080A CN 104578080 A CN104578080 A CN 104578080A CN 201410791457 A CN201410791457 A CN 201410791457A CN 104578080 A CN104578080 A CN 104578080A
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- 239000003990 capacitor Substances 0.000 description 5
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Classifications
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- 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
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- H02J13/0006—
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- H02J13/0075—
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- 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
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
-
- 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
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention discloses a low-voltage treatment method for a rural power grid. In the rural power grid, four-stage regulating and controlling devices are arranged at the low-voltage line from a transformer substation to a supplied user, which sequentially comprise a first-stage on-load voltage regulation and transformer substation concentrated compensation device for regulating and controlling the transformer substation, a second-stage multilevel circuit reactive compensation device for regulating and controlling a medium-voltage line, a third-stage on-load tap changing transformer for regulating and controlling a distribution area, and a fourth-stage low-voltage reactive compensation device for regulating and controlling a low-voltage line, wherein the low-voltage line is connected with a low-voltage monitor; the low-voltage monitor and each-stage regulating and controlling device are connected with a regulating and controlling management main station through the network or wireless communication. In the low-voltage treatment method disclosed by the invention, when the low-voltage monitor detects a certain low-voltage abnormality in the line, the regulating and controlling management main station regulates and controls the device nearest the fault place according to a sequence from the final state to the advanced voltage of the line; the regulated voltage value is transmitted to the regulating and controlling main station; the voltage data are compared with the reference value, and if the voltage data meet the standard, the main station monitors again; or, the line gives out an alarm.
Description
Technical field
The present invention relates to rural power grids low-voltage and administer field, specifically a kind of low-voltage administering method of rural power grids.
Background technology
Current, China's economy is in stage transition, and the quick growth of rural electricity consumption demand causes part rural power grids to occur situation about declining for understrressing, quality of voltage.According to rural power portion statistics, the distribution transformer in whole nation existence " low-voltage " accounts for 36.4% at present, and indivedual rural subscribers " low-voltage " problem is more outstanding.Investigate through reality, domestic low-voltage is administered from practical application, is presented the problems such as regulating and controlling voltage equipment choice is unreasonable, regulating and controlling voltage strategy imperfection, DeGrain.As application on January 30th, 2013, in publication No. CN102904268A " a kind of three grades of uniting and adjustment reactive compensation systems " national patent, there is following problem: (1), this summary of the invention mostly are the reactive power compensation field of rural power grids, accurately clearly do not describe the detailed process of the low-voltage improving electrical network end; (2), higher being not suitable for of TSC, SVG reactive apparatus cost be applied to rural power grids, and practicality is not strong; (3), regulating and controlling voltage means are inadequate, often occur that higher level's line voltage is in acceptability limit, subordinate's electrical network regulating measure is used up; (4), no-voltage control methods describe.
Summary of the invention
The object of the invention is to overcome existing rural power grids system and there is the problem being difficult to solve quality of voltage and declining, a kind of low-voltage administering method of rural power grids is provided, solve the defect that rate of qualified voltage that rural power grids low-voltage problem causes is low.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of low-voltage administering method of rural power grids, described rural power grids are provided with level Four adjusting device from transformer station to the low-voltage circuit of supply user, described level Four adjusting device be followed successively by first order on-load voltage regulation for regulating and controlling transformer station and transformer station's centralized compensation device, for regulate and control medium-voltage line the multistage reactive power compensation system device in the second level, for regulating and controlling the third level on-load tap-changing transformer of power distribution station and the fourth stage low-voltage reactive compensator capable for regulating and controlling low-voltage circuit; Described low-voltage circuit is connected to low-voltage monitor, and low-voltage monitor and every grade of adjusting device are all connected by network or wireless telecommunications and regulation and administration main website; When low-voltage monitor detects abnormal to somewhere low-voltage the low-voltage circuit of supply user from transformer station, regulation and administration main website complies with according to the time that this low-voltage occurs and first finds first treatment principle, force the equipment nearest apart from nidus according to circuit final stage to the order of Advanced Voltage, voltage value after regulation and control by network or wireless communication transmission in regulation and administration main website, and the voltage data reference value that low-voltage off-normal position corresponding to regulation and administration main website stores compares, if meet standard, restart monitoring; Otherwise the voltage protection in circuit is reported to the police.
In the present invention, described regulation and administration main website comprises preposition switch, network firewall, PC server and Master Station Software, and regulation and administration main website should possess open loop, closed-loop control, has encryption measures; Communication protocol version should be unified.Regulation and administration main website gathers the service data of low-voltage circuit low-voltage data and voltage adjusting device at different levels and stores, when the magnitude of voltage that the low-voltage data of certain position in circuit require lower than rural power grids, regulation and administration main website recalls the storage data in database and carries out data analysis, according to occur the place of low-voltage, low-voltage seriousness, used device terminal unit analog response calculate, filter out the most effective regulate and control method.
In the present invention, when the nearest voltage adjusting device control measures that low voltage point occurs are used up, the pressure regulation nargin of regulation and administration main website meeting computational analysis higher level's voltage adjusting device or voltage regulating transformer, according to the quantity of the numerical value of current low-voltage, difference, drop into economic analysis: (1), when the regulation and control nargin of the nearest equipment of distance nidus is used up, regulation and administration main website sends signal, directly drops into or regulation and control higher level equipment.(2), when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, drops into or regulation and control higher level equipment, and returns all subordinate equipments.(3), when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, drops into or regulation and control higher level equipment, and selects to drop into or regulate and control subordinate equipment.
Beneficial effect of the present invention: 1, the present invention is by providing a kind of administering method of rural power grids low-voltage, specific aim proposes the concrete grammar being applicable to rural area low-voltage solution, voltage level Four regulation and control logic control method, the contents such as adjusting device selection, comprehensive utilization modern communications technology, automated control technology, with voltage multilevel coordination controlling center system for core, realize centralized compensation in the local first order-on-load voltage regulation main transformer and station, the second level-multistage reactive power compensation system, the third level-on-load tap-changing transformer, the fourth stage-low-pressure reactive compensation level Four equipment is multinomial and different layers multilevel voltage and idle cooperation control with layer, effective raising line end quality of voltage, solve low-voltage problem.
2, the present invention improves the voltage of rural power grids end, solve due to low-voltage cause burn motor, the problem such as equipment cannot normally run; Reduce the flowing of circuit reactive current, reduce electric energy loss; For occurring that the some electrical power user of this problem provides reliable voltage quality, ensure that the electrification of the countryside is built; Say from economic aspect, rural power grids product can be made to be sold to systematization by unit; Improve rural power grids supply power voltage quality, reduce electric energy loss.
Accompanying drawing explanation
Fig. 1 is the composition frame diagram of regulator control system in low-voltage circuit;
Fig. 2 is the logic schematic diagram of regulating and controlling voltage of the present invention.
Embodiment
A kind of low-voltage administering method of rural power grids, described rural power grids are provided with level Four adjusting device from transformer station to the low-voltage circuit of supply user, described level Four adjusting device be followed successively by first order on-load voltage regulation for regulating and controlling transformer station and transformer station's centralized compensation device, for regulate and control medium-voltage line the multistage reactive power compensation system device in the second level, for regulating and controlling the third level on-load tap-changing transformer of power distribution station and the fourth stage low-voltage reactive compensator capable for regulating and controlling low-voltage circuit; Described low-voltage circuit is connected to low-voltage monitor, and low-voltage monitor and every grade of adjusting device are all connected by network or wireless telecommunications and regulation and administration main website; When low-voltage monitor detects abnormal to somewhere low-voltage the low-voltage circuit of supply user from transformer station, regulation and administration main website complies with according to the time that this low-voltage occurs and first finds first treatment principle, force the equipment nearest apart from nidus according to circuit final stage to the order of Advanced Voltage, voltage value after regulation and control by network or wireless communication transmission in regulation and administration main website, and the voltage data reference value that low-voltage off-normal position corresponding to regulation and administration main website stores compares, if meet standard, restart monitoring; Otherwise the voltage protection in circuit is reported to the police.
As shown in Figure 1, regulator control system from transformer station to the low-voltage circuit of supply user is divided into three basic layers, i.e. ground floor-regulation and administration main website, as the maincenter control section of this regulator control system, Main Function gathers transmission line ends low-voltage data in the second layer-communication unit, simultaneously, gather regulating and controlling voltage equipment operating data at different levels and store, when finding that low-voltage appears in certain tail end line, (low-voltage mentioned here refers to the magnitude of voltage lower than rural power grids requirement, the each load character required value in each department is different, as civilian phase voltage 198 ~ 235V), CPU processor in regulation and administration main website recalls storage data and carries out program analysis in database, according to the place occurring low-voltage, low-voltage seriousness, the analog response calculating sifting dropped into after adjusting device goes out the most effective regulation and control scheme.
The second layer-communication unit, namely realizes uploading of data and assigns.Because rural power grids equipment installation site is multi-point and wide-ranging, communication can adopt wireless private network or GPRS/CDMA public network, and safety is carried out according to the encryption technology of power information acquisition system and correlative protection measure; The wired communication path separately having some as ready-made in centralized compensation device in 35kV, 110kV transformer station, on-load voltage regulation main transformer and cable or optical fiber network, and can add port directly use in control room.
Third layer-equipment terminal unit, namely implements the controller switching equipment of regulation and control voltage, and effect is that the track data being responsible for monitoring this point stores, uploads, receiving parameter adjustment and action command.General to be made up of first order on-load voltage regulation and transformer station's centralized compensation device, the multistage reactive power compensation system device in the second level, third level on-load tap-changing transformer, fourth stage low-voltage reactive compensator capable and low-voltage monitor five kinds of equipment from transformer station to the equipment terminal unit of low-voltage circuit.The low-voltage data of transmission line ends and the service data of equipment terminal unit in regulation and administration main website collection communication unit also store, when the magnitude of voltage that the low-voltage data of one of them transmission line ends require lower than rural power grids, regulation and administration main website recalls the storage data in database and carries out data analysis, according to occur the place of low-voltage, low-voltage seriousness, used device terminal unit analog response calculate, filter out the most effective regulator control system.The multistage reactive power compensation system device in the second level, third level on-load tap-changing transformer, fourth stage low-voltage reactive compensator capable and low-voltage monitor receive the output signal of wireless telecommunications private network or GPRS/CDMA public network, and first order on-load voltage regulation and transformer station's centralized compensation device receive the output signal that cable or optical fiber network.
Wherein, regulation and administration main website comprises preposition switch, network firewall, PC server and Master Station Software, parameter configuration: AC220V or 380V, and maximum IP accesses 100,000, PC server CPU2.0Hz, internal memory 1.97GB, more than hard disk 120GB, wireless private network or public network communication.
The parameter configuration of first order on-load voltage regulation and transformer station's centralized compensation device: AC10kV, special capacitor fling-cut switch, is not less than three tunnels and compensates, be equipped with series reactor.Possess automatically, manual switching, hold concurrently reactive power compensation with again at voltage regulation function, be equipped with RS485 interface.
The parameter configuration of the multistage reactive power compensation system device in the second level: AC10kV, special capacitor fling-cut switch dihalogen molecule, total capacity≤400kvar.Possesses automatic, manual switching, every road compensation capacity≤200kvar.
The parameter configuration of third level on-load tap-changing transformer: AC10kV, tapping gear ± 2 × 5%, possesses manual, automatic Regulation.
The parameter configuration of fourth stage low-voltage reactive compensator capable: AC0.4kV, altogether benefit+point complementary modulus formula combination switch switching, total capacity≤90kvar.Possesses automatic, manual switching, every road compensation capacity≤10kvar.
The parameter configuration of low-voltage monitor: AC380V, 0 ~ 450V.
The division that the present invention adopts the major advantage of level Four voltage mode control to be from spatially carrying out control area to reactive voltage, and by realizing the control to this region to the control of Pilot bus in each region, take full advantage of the idle resource in region like this, avoid idle flowing on a large scale.
The low-voltage administering method of above-mentioned regulator control system is utilized to be: (1), when the regulation and control nargin of the nearest equipment of distance nidus is used up, regulation and administration main website sends signal, directly drops into or regulates and controls higher level equipment.(2), when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, drops into or regulation and control higher level equipment, and returns all subordinate equipments.(3), when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, drops into or regulation and control higher level equipment, and selects to drop into or regulate and control subordinate equipment.Specifically, control principle as shown in Figure 2 and process, the control methods of low-voltage have three kinds under normal circumstances:
(1), the experience of electrical network least significant end is usually occurred according to low-voltage and probability is foundation, after low-voltage monitor finds that low-voltage appears in circuit point, the time that system can occur according to this low-voltage, place according to first finding first to process, and press circuit final stage and are regulated and controled the nearest equipment of origination point to the order pressure of Advanced Voltage.Because place capacity, the gear of installing pressure regulation all design through calculating and use multistage reactive power compensation and many grades of voltage regulating transformers, so all can produce a desired effect after equipment regulation and control, this kind voltage regulating mode is simple, accurately, practical, the response time is short.
(2), when nearest equipment and higher level equipment regulation and control nargin that low voltage point occurs are used up, will consider the voltage adjusting device of more higher level, system can judge according to the quantity of the voltage influence of different layers after the pressure regulation nargin space of more higher level equipment, pressure regulation, low-voltage difference, economic index: a, directly drop into or regulate and control more higher level equipment; B, input or regulate and control more higher level equipment and return all subordinate equipments; C, input or regulate and control more higher level equipment+selectivity and drop into or regulation and control subordinate equipment.This kind of control methods allow capacitor to carry out under overcompensation state equally.
(3), when the nearest voltage adjusting device control measures that low voltage point occurs are used up, the pressure regulation nargin of system accounting calculation and Analysis stage capacitors or voltage regulating transformer, according to the quantity of the numerical value of current low-voltage, difference, drops into economic analysis: a, directly drops into or regulate and control higher level equipment; B, return voltage adjusting device at the corresponding levels change into drop into or regulation and control higher level equipment.This kind of control methods allow capacitor to carry out under overcompensation state.
Claims (5)
1. the low-voltage administering method of rural power grids, it is characterized in that: described rural power grids are provided with level Four adjusting device from transformer station to the low-voltage circuit of supply user, described level Four adjusting device be followed successively by first order on-load voltage regulation for regulating and controlling transformer station and transformer station's centralized compensation device, for regulate and control medium-voltage line the multistage reactive power compensation system device in the second level, for regulating and controlling the third level on-load tap-changing transformer of power distribution station and the fourth stage low-voltage reactive compensator capable for regulating and controlling low-voltage circuit; Described low-voltage circuit is connected to low-voltage monitor, and low-voltage monitor and every grade of adjusting device are all connected by network or wireless telecommunications and regulation and administration main website; When low-voltage monitor detects abnormal to somewhere low-voltage the low-voltage circuit of supply user from transformer station, regulation and administration main website complies with according to the time that this low-voltage occurs and first finds first treatment principle, force the equipment nearest apart from nidus according to circuit final stage to the order of Advanced Voltage, voltage value after regulation and control by network or wireless communication transmission in regulation and administration main website, and the voltage data reference value that low-voltage off-normal position corresponding to regulation and administration main website stores compares, if meet standard, restart monitoring; Otherwise the voltage protection in circuit is reported to the police.
2. the low-voltage administering method of a kind of rural power grids according to claim 1, is characterized in that: when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, directly drops into or regulation and control higher level equipment.
3. the low-voltage administering method of a kind of rural power grids according to claim 1, it is characterized in that: when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, drops into or regulation and control higher level equipment, and returns all subordinate equipments.
4. the low-voltage administering method of a kind of rural power grids according to claim 1, it is characterized in that: when the regulation and control nargin of the equipment nearest apart from nidus is used up, regulation and administration main website sends signal, drops into or regulation and control higher level equipment, and selects to drop into or regulation and control subordinate equipment.
5. the low-voltage administering method of a kind of rural power grids according to claim 1, is characterized in that: described regulation and administration main website comprises preposition switch, network firewall, PC server and Master Station Software.
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| CN201410791457.9A CN104578080B (en) | 2014-12-19 | 2014-12-19 | A kind of low-voltage administering method of rural power grids |
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| CN201410791457.9A CN104578080B (en) | 2014-12-19 | 2014-12-19 | A kind of low-voltage administering method of rural power grids |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852470A (en) * | 2015-05-11 | 2015-08-19 | 国家电网公司 | End user selection method based on graphical topology |
| CN106981927A (en) * | 2017-05-13 | 2017-07-25 | 深圳国电粤能节能科技有限公司 | Intelligence relaying power center control system for low pressure long-distance transmissions |
| CN109214618A (en) * | 2017-06-29 | 2019-01-15 | 平高集团有限公司 | A kind of rural power grids part reactive compensation dispensing control method and device |
| CN109449932A (en) * | 2018-12-07 | 2019-03-08 | 国网辽宁省电力有限公司鞍山供电公司 | It is a kind of based on voltage synchronous test low-voltage reforming mode determine method |
| CN110611316A (en) * | 2019-09-26 | 2019-12-24 | 国网湖南省电力有限公司 | Method, system and medium for improving voltage qualification rate of 400V low-voltage user |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852470A (en) * | 2015-05-11 | 2015-08-19 | 国家电网公司 | End user selection method based on graphical topology |
| CN106981927A (en) * | 2017-05-13 | 2017-07-25 | 深圳国电粤能节能科技有限公司 | Intelligence relaying power center control system for low pressure long-distance transmissions |
| CN109214618A (en) * | 2017-06-29 | 2019-01-15 | 平高集团有限公司 | A kind of rural power grids part reactive compensation dispensing control method and device |
| CN109214618B (en) * | 2017-06-29 | 2023-08-22 | 平高集团有限公司 | Rural power grid local reactive compensation allocation control method and device |
| CN109449932A (en) * | 2018-12-07 | 2019-03-08 | 国网辽宁省电力有限公司鞍山供电公司 | It is a kind of based on voltage synchronous test low-voltage reforming mode determine method |
| CN110611316A (en) * | 2019-09-26 | 2019-12-24 | 国网湖南省电力有限公司 | Method, system and medium for improving voltage qualification rate of 400V low-voltage user |
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| CN104578080B (en) | 2017-08-04 |
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