CN109361224B - Low-voltage distribution network monitoring compensation system and compensation method under weak communication condition - Google Patents
Low-voltage distribution network monitoring compensation system and compensation method under weak communication condition Download PDFInfo
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- CN109361224B CN109361224B CN201811371524.6A CN201811371524A CN109361224B CN 109361224 B CN109361224 B CN 109361224B CN 201811371524 A CN201811371524 A CN 201811371524A CN 109361224 B CN109361224 B CN 109361224B
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention discloses a low-voltage distribution network monitoring and compensating system under the weak communication condition, which comprises an intelligent distribution transformer terminal, a tail end voltage monitor and a compensating device, wherein the intelligent distribution transformer terminal is arranged on a low-voltage side bus of a power distribution transformer, and the tail end voltage monitor is arranged at the tail end of the longest branch line of a low-voltage distribution network; measuring the length of a branch line of the low-voltage distribution network, and if the length of the longest branch line is less than or equal to 200m, arranging a compensation device at the tail end of more than one longest branch line; the terminal voltage monitor feeds the monitoring voltage value back to the intelligent distribution transformer terminal, the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the monitoring voltage value, and if the terminal low voltage occurs, the compensation device is controlled to perform reactive compensation on the line. According to the invention, the compensation device is controlled to perform power compensation through the weak communication between the intelligent distribution transformer terminal and the lower-layer compensation device, so that the low voltage level on the low-voltage line can be effectively improved without communicating with the upper layer and coordinately controlling voltage compensation by the upper layer.
Description
Technical Field
The invention relates to a low-voltage distribution network monitoring compensation system and a low-voltage distribution network monitoring compensation method under the condition of weak communication, and belongs to the monitoring technology of low-voltage distribution lines.
Background
The low-voltage distribution network is positioned at the tail end of the power grid and is directly connected with vast users, so that the low-voltage distribution network plays a vital role in the power utilization quality of the vast users; however, for cost reasons, information collection and monitoring of low-voltage distribution networks have not been in place.
With the development of economy, the number of industrial users and business residential districts is gradually increased, meanwhile, the living standard of people is continuously improved and is influenced and restricted by various factors, and the problems of unbalance and low voltage frequently occur at the tail end of a three-phase distribution line, so that certain economic loss is caused. At present, a metering automation system only monitors the electric quantity of a distribution and transformation main outlet, but does not monitor the information of each branch line, so that operation and maintenance personnel cannot accurately support data when judging heavy overload and unbalanced three phases of a low-voltage line, and cannot timely know and process conditions such as open-phase, voltage loss and low voltage only by user repair or telephone reflection, the power supply reliability of a low-voltage distribution network is seriously influenced, and even user equipment and personal safety are endangered. For example, in the reactive compensation system for the low-voltage distribution line disclosed in patent CN204046181U, the reactive compensation unit is installed at the position 2/3-4/5 of the power supply line with the transformer as the starting point, the information of the power supply line is not monitored, the detailed process of increasing the low voltage at the end of the power grid is not described accurately and clearly, the operation and maintenance personnel cannot distinguish the heavy overload of the low-voltage line, and the power supply instability of the low-voltage distribution network is increased.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a low-voltage distribution network monitoring compensation system and a compensation method under the weak communication condition, which are used for monitoring the electrical operation condition of a low-voltage bus and a branch line, reducing the labor intensity of operation and maintenance departments of a power supply company, saving the labor cost and generating direct and indirect economic benefits.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a low-voltage distribution network monitoring compensation system under the weak communication condition comprises an intelligent distribution transformer terminal, a terminal voltage monitor and a compensation device, wherein the intelligent distribution transformer terminal is arranged on a low-voltage side bus of a power distribution transformer, and the terminal voltage monitor is arranged at the tail end of the longest branch line of a low-voltage distribution network; measuring the length of a branch line of the low-voltage distribution network, and if the length of the longest branch line is less than or equal to 200m, arranging a compensation device at the tail end of more than one longest branch line;
if the length of the branch line is more than 200m, the branch line is continuously segmented from the intelligent distribution terminal side according to a length equal ratio shortening mode, and the segment with the next length is n% of the segment with the previous length: if the length of the tail section is less than 50% of the length of the last length section, merging the tail section into the last length section; otherwise, the tail section is taken as a single section; the first length segment from the intelligent distribution transformer terminal is 200m, and a compensation device is arranged at the tail end of each length segment;
the terminal voltage monitor feeds the monitoring voltage value back to the intelligent distribution transformer terminal, the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the monitoring voltage value, and if the terminal low voltage occurs, the compensation device is controlled to perform reactive compensation on the line.
According to practical conditions, some long branch lines exist, but generally the length of the branch lines does not exceed 500m, and taking 500m long branch lines as an example, the length of a first segment is 200m, the length of a second segment is 160m, the length of a third segment is 128m, the length of a tail segment is 2m, and because 2m is less than half of 128m, the tail segment is merged into the third segment, and the length of the final tail segment is 130 m. Similarly, in the case of 580m branch line, the length of the tail segment is 92m, and since 92m exceeds half of 128m, the tail segment is formed by itself and still serves as the tail segment. The compensation difficulty is higher due to the branch lines with longer distances, so that the compensation is carried out in an equal ratio mode instead of a fixed value design. Of course, specific adjustments may be made in placing specific locations of the compensation device according to specific grid layouts and node arrangements.
Preferably, n is a positive number in the range of 60-80.
Preferably, when the compensation device is controlled to perform reactive compensation on the line, according to the length of the branch line, the compensation device at the tail end of the longest branch line is started first, and if the tail end low voltage cannot be avoided, the compensation device at the tail end of the next-long branch line is started until the tail end low voltage is avoided; if the compensation devices at the tail ends of all the branch lines are started, the tail end low voltage is still not avoided, and the farthest compensation devices are sequentially started according to the distance between other compensation devices and the intelligent distribution transformer terminal until the tail end low voltage is avoided.
Preferably, all the compensation devices are the same and are power capacitors or distributed power sources. More preferably, the compensating device is connected with a zinc oxide arrester.
The specific scheme is that the terminal voltage monitor is provided with a GPRS module, and the GPRS module is in communication connection with the intelligent distribution transformer terminal through a wireless network.
The other concrete scheme is that the compensation device arranged at the tail end of the longest branch line is a three-stage reactive compensation device, and the compensation devices arranged at other positions are circuit capacitors or distributed power supplies; the three-stage reactive power compensation device comprises a parallel capacitor, a static reactive power compensator and a static reactive power generator, wherein the static reactive power generator and the static reactive power compensator are used for compensation and parallel connection of the capacitor, the capacity of the static reactive power generator is smaller than that of the static reactive power compensator, and the capacity of the static reactive power compensator is smaller than that of the parallel capacitor; when the tail end low voltage occurs, firstly, the static var generator is adopted for compensation, if the tail end low voltage cannot be avoided, the static var generator is adopted for compensation, and if the tail end low voltage cannot be avoided, the parallel capacitor is adopted for compensation.
A low-voltage distribution network monitoring compensation method under the condition of weak communication comprises the following steps:
(1) arranging an intelligent distribution and transformation terminal, a terminal voltage monitor and a compensation device on a power distribution and transformation line;
(2) monitoring the voltage value of the tail end of the longest branch line of the low-voltage distribution network through a tail end voltage monitor, and feeding back the detected voltage value to the intelligent distribution transformer terminal;
(3) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, if the terminal low voltage occurs, the intelligent distribution transformer terminal controls a compensation device at the tail end of the longest branch line to perform reactive compensation on the line, and the terminal voltage monitor continuously monitors;
(4) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, and if the terminal low voltage still exists, the intelligent distribution transformer terminal controls a compensation device at the tail end of the sub-long branch line to perform reactive compensation on the line until the terminal low voltage is avoided;
(5) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, and if the terminal low voltage still exists, the farthest compensation devices are sequentially started according to the distance between other compensation devices and the intelligent distribution transformer terminal until the terminal low voltage is avoided.
Preferably, the compensation device at the tail end of the longest branch line is a three-stage reactive compensation device, and the compensation devices installed at other positions are circuit capacitors or distributed power supplies; the three-stage reactive power compensation device comprises a parallel capacitor, a static reactive power compensator and a static reactive power generator, wherein the static reactive power generator and the static reactive power compensator are used for compensation and parallel connection of the capacitor, the capacity of the static reactive power generator is smaller than that of the static reactive power compensator, and the capacity of the static reactive power compensator is smaller than that of the parallel capacitor; when the tail end low voltage occurs, firstly, the static var generator is adopted for compensation, if the tail end low voltage cannot be avoided, the static var generator is adopted for compensation, and if the tail end low voltage cannot be avoided, the parallel capacitor is adopted for compensation.
Preferably, when the intelligent distribution transformer terminal judges that the terminal low voltage occurs according to the real-time monitoring voltage value, the terminal low voltage is judged to occur after the real-time monitoring voltage value is continuously monitored for 100ms-300ms, and if the terminal low voltage still exists, the compensation device at the tail end of the sub-long branch line is controlled to perform reactive compensation on the line until the terminal low voltage is avoided.
Preferably, if the compensation devices to be started are the same distance from the intelligent distribution terminal, the compensation devices on the branch lines having the branch points farther from the intelligent distribution terminal are started in priority.
Has the advantages that: according to the low-voltage distribution network monitoring compensation system and the low-voltage distribution network monitoring compensation method under the weak communication condition, the voltage monitors are arranged on the low-voltage side of the distribution transformer and at the tail ends of partial lines, and the measured voltage is fed back to the intelligent distribution transformer terminal, so that a basis is provided for voltage management; the intelligent power distribution terminal device can collect more comprehensive voltage data on the original basis, sends a control instruction through local calculation, controls the action of the compensation device, further performs reactive power coordination control on line voltage by combining the distribution point of the compensation device on a distribution network, improves the voltage quality, and solves the problem of serious low voltage phenomenon at the tail end of a branch line in a transformer area; according to the invention, the compensation device is controlled to perform power compensation through the weak communication between the intelligent distribution transformer terminal and the lower compensation device, so that the low voltage level on a low-voltage line can be effectively improved without communicating with an upper layer and coordinating and controlling voltage compensation by the upper layer; meanwhile, imbalance, voltage loss and phase loss conditions on the line can be fed back to the inspection personnel in time, and timely treatment is facilitated.
Drawings
Fig. 1 is a schematic view of the installation of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the monitoring and compensating system for the low-voltage distribution network under the weak communication condition includes an intelligent distribution transformer terminal, a terminal voltage monitor and a compensating device, wherein the intelligent distribution transformer terminal is arranged on a low-voltage side bus of a power distribution transformer, and the terminal voltage monitor is arranged at the tail end of the longest branch line of the low-voltage distribution network; measuring the length of a branch line of the low-voltage distribution network, and if the length of the longest branch line is less than or equal to 200m, arranging a compensation device at the tail end of more than one longest branch line;
if the length of the branch line is more than 200m, the branch line is continuously segmented from the intelligent distribution terminal side according to a length equal ratio shortening mode, and the segment with the next length is 80% of the segment with the previous length: if the length of the tail section is less than 50% of the length of the last length section, merging the tail section into the last length section; otherwise, the tail section is taken as a single section; the first length segment from the intelligent distribution transformer terminal is 200m, and a compensation device is arranged at the tail end of each length segment;
the terminal voltage monitor feeds the monitoring voltage value back to the intelligent distribution transformer terminal, the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the monitoring voltage value, and if the terminal low voltage occurs, the compensation device is controlled to perform reactive compensation on the line. The terminal voltage monitor is provided with a GPRS module, and the GPRS module is in communication connection with the intelligent distribution transformer terminal through a wireless network.
The compensation devices are all power capacitors or distributed power sources. The compensation device is connected with a zinc oxide lightning arrester to prevent line operation overvoltage and lightning stroke overvoltage.
When the compensation device is controlled to perform reactive compensation on a line, according to the length of a branch line, the compensation device at the tail end of the longest branch line is started, and if the tail end low voltage cannot be avoided, the compensation device at the tail end of the next longest branch line is started until the tail end low voltage is avoided; if the compensation devices at the tail ends of all the branch lines are started, the tail end low voltage is still not avoided, and the farthest compensation devices are sequentially started according to the distance between other compensation devices and the intelligent distribution transformer terminal until the tail end low voltage is avoided.
The compensation device arranged at the tail end of the longest branch line is a three-stage reactive compensation device, and the compensation devices arranged at other positions are circuit capacitors or distributed power supplies; the three-stage reactive power compensation device comprises a parallel capacitor, a static reactive power compensator and a static reactive power generator, wherein the static reactive power generator and the static reactive power compensator are used for compensation and parallel connection of the capacitor, the capacity of the static reactive power generator is smaller than that of the static reactive power compensator, and the capacity of the static reactive power compensator is smaller than that of the parallel capacitor; when the tail end low voltage occurs, firstly, the static var generator is adopted for compensation, if the tail end low voltage cannot be avoided, the static var generator is adopted for compensation, and if the tail end low voltage cannot be avoided, the parallel capacitor is adopted for compensation.
A low-voltage distribution network monitoring compensation method under the condition of weak communication comprises the following steps:
(1) arranging an intelligent distribution and transformation terminal, a terminal voltage monitor and a compensation device on a power distribution and transformation line;
(2) monitoring the voltage value of the tail end of the longest branch line of the low-voltage distribution network through a tail end voltage monitor, and feeding back the detected voltage value to the intelligent distribution transformer terminal;
(3) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, if the terminal low voltage occurs, the intelligent distribution transformer terminal controls a compensation device at the tail end of the longest branch line to perform reactive compensation on the line, and the terminal voltage monitor continuously monitors;
(4) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, and if the terminal low voltage still exists, the intelligent distribution transformer terminal controls a compensation device at the tail end of the sub-long branch line to perform reactive compensation on the line until the terminal low voltage is avoided;
(5) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, and if the terminal low voltage still exists, the farthest compensation devices are sequentially started according to the distance between other compensation devices and the intelligent distribution transformer terminal until the terminal low voltage is avoided; and if the distance between the compensation device to be started and the intelligent distribution and transformation terminal is the same, starting the compensation device on the branch line with the branch point far away from the intelligent distribution and transformation terminal preferentially.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (4)
1. The utility model provides a low voltage distribution network monitoring compensation system under weak communication condition which characterized in that: the intelligent distribution transformer terminal is arranged on a low-voltage side bus of a power grid distribution transformer, and the tail end voltage monitor is arranged at the tail end of the longest branch line of a low-voltage distribution network; measuring the length of a branch line of the low-voltage distribution network, and if the length of the longest branch line is less than or equal to 200m, arranging a compensation device at the tail end of more than one longest branch line;
if the length of the branch line is more than 200m, the branch line is continuously segmented from the intelligent distribution terminal side according to a length equal ratio shortening mode, and the segment with the next length is n% of the segment with the previous length: if the length of the tail section is less than 50% of the length of the last length section, merging the tail section into the last length section; otherwise, the tail section is taken as a single section; the first length segment from the intelligent distribution transformer terminal is 200m, and a compensation device is arranged at the tail end of each length segment; n is a positive number in the range of 60-80;
the tail end voltage monitor feeds a monitored voltage value back to the intelligent distribution transformer terminal, the intelligent distribution transformer terminal judges whether tail end low voltage occurs according to the monitored voltage value, and if the tail end low voltage occurs, the compensation device is controlled to perform reactive compensation on the line;
when the compensation device is controlled to perform reactive compensation on a line, according to the length of a branch line, the compensation device at the tail end of the longest branch line is started, and if the tail end low voltage cannot be avoided, the compensation device at the tail end of the next longest branch line is started until the tail end low voltage is avoided; if the compensation devices at the tail ends of all the branch lines are started and the tail end low voltage is still not avoided, the farthest compensation devices are started in sequence according to the distance between other compensation devices and the intelligent distribution transformer terminal until the tail end low voltage is avoided;
the compensation device is connected with a zinc oxide lightning arrester, the compensation device at the tail end of the longest branch line is a three-stage reactive compensation device, and the compensation devices arranged at other positions are circuit capacitors or distributed power supplies; the three-stage reactive power compensation device comprises a parallel capacitor, a static reactive power compensator and a static reactive power generator, wherein the static reactive power generator, the static reactive power compensator and the parallel capacitor are sequentially adopted for compensation, the capacity of the static reactive power generator is smaller than that of the static reactive power compensator, and the capacity of the static reactive power compensator is smaller than that of the parallel capacitor; when the tail end low voltage occurs, firstly, a static var generator is adopted for compensation, if the tail end low voltage cannot be avoided, the static var generator is adopted for compensation, and if the tail end low voltage cannot be avoided, a parallel capacitor is adopted for compensation;
the terminal voltage monitor is provided with a GPRS module, and the GPRS module is in communication connection with the intelligent distribution transformer terminal through a wireless network.
2. A compensation method of a low-voltage distribution network monitoring compensation system under the condition of weak communication according to claim 1, characterized in that: the method comprises the following steps:
(1) arranging an intelligent distribution and transformation terminal, a terminal voltage monitor and a compensation device on a power distribution and transformation line;
(2) monitoring the voltage value of the tail end of the longest branch line of the low-voltage distribution network through a tail end voltage monitor, and feeding back the detected voltage value to the intelligent distribution transformer terminal;
(3) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, if the terminal low voltage occurs, the intelligent distribution transformer terminal controls a compensation device at the tail end of the longest branch line to perform reactive compensation on the line, and the terminal voltage monitor continuously monitors;
(4) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, and if the terminal low voltage still exists, the intelligent distribution transformer terminal controls a compensation device at the tail end of the sub-long branch line to perform reactive compensation on the line until the terminal low voltage is avoided;
(5) the intelligent distribution transformer terminal judges whether terminal low voltage occurs according to the real-time monitoring voltage value, and if the terminal low voltage still exists, the farthest compensation devices are sequentially started according to the distance between other compensation devices and the intelligent distribution transformer terminal until the terminal low voltage is avoided.
3. The compensation method of the monitoring and compensation system for the low-voltage distribution network under the weak communication condition according to claim 2, wherein the compensation method comprises the following steps: when the intelligent distribution transformer terminal judges that the terminal low voltage occurs according to the real-time monitoring voltage value, the terminal low voltage is judged to occur after the real-time monitoring voltage value is continuously monitored for 100-300 ms, and if the terminal low voltage still exists, the compensation device at the tail end of the sub-long branch line is controlled to perform reactive compensation on the line until the terminal low voltage is avoided.
4. The compensation method of the monitoring and compensation system for the low-voltage distribution network under the weak communication condition according to claim 3, wherein the compensation method comprises the following steps: and if the distance between the compensation device to be started and the intelligent distribution and transformation terminal is the same, starting the compensation device on the branch line with the branch point far away from the intelligent distribution and transformation terminal preferentially.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390897A (en) * | 2013-06-17 | 2013-11-13 | 国家电网公司 | Low-voltage distribution area dispersion reactive compensation method based on wireless network |
| CN103441515A (en) * | 2013-09-17 | 2013-12-11 | 东南大学 | Reactive power compensation device |
| CN104300553A (en) * | 2014-10-17 | 2015-01-21 | 国家电网公司 | Rural power network low voltage comprehensive treatment control device and method |
| CN105262104A (en) * | 2015-09-24 | 2016-01-20 | 中国南方电网有限责任公司 | Reactive power sectional balance control method for 10 kV distribution line containing distributed power supplies |
| CN106887850A (en) * | 2015-12-15 | 2017-06-23 | 北海市深蓝科技发展有限责任公司 | A kind of device that terminal voltage is lifted along low-voltage distributing line segmentation switching capacitance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887849A (en) * | 2015-12-15 | 2017-06-23 | 北海市深蓝科技发展有限责任公司 | A kind of method for lifting terminal voltage along low-voltage distributing line segmentation switching capacitance |
| CN106208110B (en) * | 2016-08-31 | 2022-06-07 | 中国电力科学研究院 | Method for screening optimal configuration strategy of reactive power compensation of power distribution network |
-
2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390897A (en) * | 2013-06-17 | 2013-11-13 | 国家电网公司 | Low-voltage distribution area dispersion reactive compensation method based on wireless network |
| CN103441515A (en) * | 2013-09-17 | 2013-12-11 | 东南大学 | Reactive power compensation device |
| CN104300553A (en) * | 2014-10-17 | 2015-01-21 | 国家电网公司 | Rural power network low voltage comprehensive treatment control device and method |
| CN105262104A (en) * | 2015-09-24 | 2016-01-20 | 中国南方电网有限责任公司 | Reactive power sectional balance control method for 10 kV distribution line containing distributed power supplies |
| CN106887850A (en) * | 2015-12-15 | 2017-06-23 | 北海市深蓝科技发展有限责任公司 | A kind of device that terminal voltage is lifted along low-voltage distributing line segmentation switching capacitance |
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