CN106340885A - Terminal power grid voltage stabilization system and control method - Google Patents
Terminal power grid voltage stabilization system and control method Download PDFInfo
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- CN106340885A CN106340885A CN201610868736.XA CN201610868736A CN106340885A CN 106340885 A CN106340885 A CN 106340885A CN 201610868736 A CN201610868736 A CN 201610868736A CN 106340885 A CN106340885 A CN 106340885A
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- voltage
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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
- 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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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
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- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a terminal power grid voltage stabilization system. The terminal power grid voltage stabilization system comprises a control unit, an SVG branch, a plurality of reactor branches and a voltage detection component; the SVG branch and the plurality of reactor branches are connected in parallel; an SVG apparatus is arranged in the SVG branch; reactors are arranged in the reactor branches; a current detection component and a switch are arranged in each of the SVG branch and the reactor branches; and the control unit is connected with the voltage detection component, the switches, the current detection components and the SVG apparatus. The invention also discloses a control method. The control method includes the following steps that: the voltage detection component acquires power grid voltage, and the control unit compares voltage signals with preset standard voltage signals, calculates a voltage difference value and reactive power capacity required to be outputted, controls the switches of the reactor branches so as to realize the switching of the reactor branches; and the control unit controls the SVG apparatus to output inductive reactive power or capacitive reactive power according to current signals. The system and method of the invention are advantageous that the system and method can reduce the capacity and loss of the SVG apparatus.
Description
Technical field
The invention mainly relates to power supply technique field, refer in particular to a kind of end Network Voltage Stability system and control method.
Background technology
With the continuous development of social economy and industrial technology, the capacity of power system is continuously increased, and electric network composition is increasingly
Complicated and huge so that being widely present power supply reliability, the quality of power supply and efficiency of transmission problem in distribution system.Wherein voltage
Quality is a very important standard in the quality of power supply, the quality not only life for industrial and agricultural production and people of voltage
There is very big impact, and it also has very big impact for the safe operation of electrical network and the economic benefit of electrical network.More closely
Nian Lai, China's power network development is very fast, the continuous development of the electric railway in cities and towns and city rail traffic, and controls flood, prevents
The infrastructure constructions such as flood, the trans-regional property in city is powered, and promotes the distance power applications of supply line more and more extensive, and
And assume power supply voltage level and step up, have been raised to based on 10 to 35kv grade from the relatively early 6kv to 10kv using, and
The features such as supply line's length is more and more longer.
The distance of supply line, high voltage transmission engineering, all bring new skill to the design of circuit, construction and use
Art problem.Such as: supply line is considerable, and from transmission of electricity, circuit inductive reactive power is lost, line voltage distribution loss causes end voltage drop
Low；Cable capacity current is present in cable, causes route protection misoperation and line-breaker tripping operation, the capacitive reactive power of generation
Power can cause the series of voltage stability techniques difficult problems such as voltage cables non-terminal voltage rising.
Solve the problems, such as that the method for Network Voltage Stability is usually using the capacity expanding transformer, increases distribution line at present
Line footpath, change electrical network power supply mode, shorten the method such as power supply network length to improve power supply capacity, it is mainly become by minimizing
The voltage stabilization sex chromosome mosaicism that the equiva lent impedance of depressor and circuit causes come the loss to reduce voltage.For seeking more preferable solution party
Method, many people did the research of correlation, were usually to install reactive power compensator additional in power supply network end at present, such as arranged tcr+
Various solutions are carried out labor by fc, tsc, svg type dynamic reactive compensation device etc. below:
1st, tcr+fc type compensation device, it mainly includes thyristor-controlled reactor and multiple branch circuit capacitor bank, predominantly system
Electrical network provides continuously adjustable perception and capacitive reactive power, and capacitor bank part may be alternatively configured the forms such as single order, second order simultaneously
Filter branch, filtering of some characteristic harmonics in achievable electrical network, mainly inductive reactive power in system is compensated, reaches
To raising end line voltage.
2nd, tsc device is thyristor switchable capacitor group device, the IGCT assembly including plural serial stage and capacitor bank.
By controlling turn on thyristors, capacitor bank is accessed electrical network, and naturally turn off to exit capacitor using thyristor current flows zero passage
Group, it mainly realizes providing capacitive reactive power to compensate electrical network end, with inductive reactive power in balanced circuit, reaches non-terminal voltage
The purpose of lifting.
3rd, svg device, is a kind of new static synchronous reactive compensator in recent years, mainly includes the complete of plural serial stage
Control type power electronic device, and the inductor being connected with electrical network.By controlling the break-make of all-controlling power electronics device, change
The phase difference of output voltage and electric current so that svg device sends corresponding capacitive or lagging reactive power, can in electrical network because
The voltage stabilization sex chromosome mosaicism that capacitive reactive power or inductive reactive power cause.
4th, in electrical network electric power system, in particularly regional electric power system, using tsr or mcr device switching or regulation
Parallel reactor device stablizing electrical network or the non-terminal voltage of transmission line of electricity, wherein tsr device is mainly by shunt reactor, switching
Breaker and attached protection device etc. are constituted, and mcr device is mainly by a magnet controlled reactor, low-voltage thyristor assembly and its tune
Section control system composition, both send adjustable or continuous inductive reactive power using reactor, with compensated line over the ground
Or alternate capacitive reactive power, to reach the effect of voltage stabilization.
Hereinafter the deficiency of various solutions is described further:
1st, it is directed at present, solve the problems, such as that the method for Network Voltage Stability is usually using the capacity expanding transformer, increases distribution
The line footpath of circuit, change electrical network power supply mode, shorten the method such as power supply network length to improve power supply capacity, its cardinal principle is logical
Cross and reduce the voltage stabilization sex chromosome mosaicism that the equiva lent impedance of transformer and circuit causes come the loss to reduce voltage.But these methods
Investment is big, long in time limit, and the loss of voltage of the increase with load current, transformer and circuit also can increase, therefore this kind
Mode does not fundamentally solve the problems, such as electrical network end voltage stabilization.
2nd, it is directed to using tcr+fc type svc compensation device, mainly inductive reactive power in system is compensated, reach raising
The non-terminal voltage of electrical network, its application is mostly in tractive power supply system, remote-distance overhead wire and similar system, is born according to circuit
Lotus change real-time detecting system voltage, reactive power etc., the idle output of dynamic regulation svc, compensated line inductive reactive power, to carry
Up voltage, improves end voltage stability, and its equipment adopts Controlled Reactor and large value capacitor group combining form, its occupation of land
Area is big, and equipment loss is big, and plant maintenance amount is many, and the reactive power that svc device is provided simultaneously is with the reduction of system voltage
And reduce.
3rd, it is directed to using tsc device, mainly realize multigroup switching of capacitor bank, compensation network circuit inductive reactive power work(
Rate, reduces network loss and lifts non-terminal voltage, but this mode exists just for electrical network and compensates during inductive reactive power, and adopt for similar
The end voltage increase problem being caused with charging capacitor during cable power supply but can not solve.
When the 4th, adopting tsr or mcr device, can be primarily directed to power by the lagging reactive power output of control device
There is the non-terminal voltage that circuit capacitive charging current causes in net and raise problem and administered, using switching or adjust inductive reactive power
Power carrys out charging capacitive reactive power in balanced feeding net, reduces the non-terminal voltage of power supply network, reaches the purpose of burning voltage, function
Have some limitations.
Content of the invention
The technical problem to be solved in the present invention is that the technical problem existing for prior art, and the present invention provides one
The end Network Voltage Stability system that kind structure is simple, voltage regulation result is good and reduces svg installed capacity and loss, and accordingly carry
For a kind of control method easy and simple to handle, reducing svg installed capacity and loss.
For solving above-mentioned technical problem, technical scheme proposed by the present invention is:
A kind of end Network Voltage Stability system, including control unit, svg branch road, multichannel Reactor Branch be used for detecting end
The voltage detecting part of end line voltage, described svg branch road and multichannel Reactor Branch is parallel with one another accesses in the electrical network of end, institute
State and in svg branch road, be provided with svg device, in described Reactor Branch, be provided with reactor, described svg branch road and each reactor prop up
It is provided with the current detecting part for detecting corresponding branch current and the switch for controlling corresponding branch road break-make, institute in road
State voltage detecting part and be connected with described control unit for sending the end mains voltage signal of detection to control unit, described
Control unit is connected with described switch, for being controlled respectively according to the difference between end mains voltage signal and preset standard voltage
Switch on-off to realize the switching of corresponding Reactor Branch, described control unit and described svg device and each current detecting part
It is connected, be used for controlling the work of described svg device to balance end line voltage according to each current detecting part.
Improvement further as technique scheme:
It is in series with soft charge unit in described svg branch road, is used for the precharge before svg device starts, described soft charge unit is simultaneously
It is associated with shorting switch.
It is provided with fv arrester in described svg branch road and Reactor Branch, be used for carrying out overvoltage protection.
Described svg branch road is connected with end electrical network by feeder breaker with after multichannel reactor branch circuit parallel connection.
The quantity of described Reactor Branch is two-way.
Invention additionally discloses a kind of control method based on end as above Network Voltage Stability system, described voltage
Detection piece is acquired to the voltage of end electrical network in real time and sends to control unit, and the voltage gathering is believed by described control unit
Number contrasted with preset standard voltage signal, calculated the reactive capability of voltage difference and required output, described control list
Unit controls the switch of each Reactor Branch according to comparing result, to realize the switching of each Reactor Branch；Each current detecting part inspection
Survey the electric current of corresponding branch road and send current signal to control unit, described control unit controls svg according to each current signal
Device output lagging reactive power or capacitive reactive power.
Improvement further as technique scheme:
When the voltage signal of described voltage detecting part collection is more than preset standard voltage, described control unit controls each switch to close
Close, so that each Reactor Branch puts into and exports lagging reactive power；Described control unit calculates each according to each current detecting part
The lagging reactive power of Reactor Branch output, when the lagging reactive power of each Reactor Branch output meets required no power capacity
During amount, described svg device does not start, and otherwise svg device starts to supplement lagging reactive power so that end mains voltage signal
Stablize to preset standard magnitude of voltage.
When the voltage signal of described voltage detecting part collection is less than preset standard voltage, described control unit controls respectively to be opened
Close and disconnect to excise each Reactor Branch；Described control unit controls svg device to start output capacitive reactive power to end electricity
Net voltage compensates, to stabilize it to preset standard magnitude of voltage.
Compared with prior art, it is an advantage of the current invention that:
The end Network Voltage Stability system of the present invention, by the way of svg branch road is matched with multichannel Reactor Branch, can
End line voltage is carried out with perception or capacitive reactive power compensates；Inductance using shunt reactor compensates distribution along the line
Electric capacity, can reach the purpose of limiting circuitry power-frequency overvoltage rising；Svg device is combined with Reactor Branch, can substantially reduce
The whole volume of svg device, reduces plant running electric current, reduces svg equipment loss.
The control method of the end Network Voltage Stability system of the present invention, not only have as above systems stabilisation had excellent
Point, and easy and simple to handle, voltage regulation result is good, enters Mobile state tracing compensation for line voltage, keeps the non-terminal voltage of power supply network steady
It is scheduled near standard value.
Brief description
Fig. 1 is the electrical schematic of the present invention.
Fig. 2 is the control circuit schematic diagram of the present invention.
Fig. 3 is the circuit theory diagrams of svg device in the present invention.
In figure label represents: 1, control unit；2nd, svg branch road；21st, svg device；22nd, linked reactor；23rd, electric current inspection
Survey part；24th, switch；3rd, Reactor Branch；31st, reactor；4th, feeder breaker；5th, voltage detecting part.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
As shown in Figure 1 to Figure 3, the end Network Voltage Stability system of the present embodiment, including control unit 1, svg branch road 2,
Multichannel Reactor Branch 3 and voltage detecting part 5, svg branch road 2 and multichannel Reactor Branch 3 for detecting end line voltage
Parallel with one another access in the electrical network of end, be provided with svg device 21(silent oscillation synchronization reactive compensator in svg branch road 2), electricity
It is in series with reactor 31 in anti-device branch road 3, be provided with svg branch road 2 and each Reactor Branch 3 for detecting corresponding branch road electricity
Ta1～tan in current detecting part 23(Fig. 1 of stream) and for control switch 24(qs1, qs11 of corresponding branch road break-make～
Qsn1), the pt in voltage detecting part 5(Fig. 2) be connected with control unit 1 for by the end mains voltage signal of detection send to
Control unit 1, control unit 1 is connected with switch 24, for according between end mains voltage signal and preset standard voltage
Difference controls the break-make of each switch 24 to realize corresponding to the switching of Reactor Branch 3, control unit 1 and svg device 21 and each electricity
Stream detection piece 23 is connected, is used for controlling the work of svg device 21 to balance end line voltage according to each current detecting part 23, with
It is stablized in standard voltage value.The end Network Voltage Stability system of the present invention, using svg branch road 2 and multichannel Reactor Branch 3
The mode matching, can carry out perception to end line voltage or capacitive reactive power compensates；Using shunt reactor 31
Inductance, to compensate distribution capacity along the line, can reach the purpose of limiting circuitry power-frequency overvoltage rising；Svg device 21 and reactor
Branch road 3 combines, and can substantially reduce the whole volume of svg device 21, reduces plant running electric current, reduces svg equipment loss.
In the present embodiment, svg device 21 includes svgf current transformer, as shown in figure 3, its single group igbt module is by bridge type inverse
Device constitutes voltage-type inversion unit, and complexes are multigroup igbt module-cascade, realize reactive current, voltage transformation, it is suitable
In the controlled voltage source of a voltage and phase place size.Chain type svg device 21 is connected with electrical network by linked reactor 22, will be straight
Stream side voltage transformation is alternating voltage, suitably adjusts the phase and amplitude of AC output voltage, circuit can be made to absorb or send out
Go out to meet the reactive current requiring, realize dynamic reactive power compensation.
It is in series with soft charge unit r in svg branch road 2, is used for the precharge before svg device 21 starts, soft charge unit is simultaneously
It is associated with shorting switch, for the short circuit soft charge unit r in normal work.It is provided with svg branch road 2 and Reactor Branch 3
Fv arrester (fv1～fvn in Fig. 1), it is used for carrying out overvoltage protection.After svg branch road 2 and multichannel Reactor Branch 3 parallel connection
It is connected with end electrical network by feeder breaker 4qf.
The present invention further correspondingly discloses a kind of control method based on end as above Network Voltage Stability system, electricity
Pressure detection piece 5 is acquired to the voltage of end electrical network in real time and sends the voltage that will gather to control unit 1, control unit 1
Signal is contrasted with preset standard voltage signal, calculates the reactive capability of voltage difference and required output, control unit 1
Control the switch 24 of each Reactor Branch 3 according to comparing result, to realize the switching of each Reactor Branch 3；Each current detecting part
The electric current of the corresponding branch road of 23 detections simultaneously sends current signal to control unit 1, and control unit 1 controls according to each current signal
Svg device 21 output lagging reactive power or capacitive reactive power.
In the present embodiment, when the voltage signal of voltage detecting part 5 collection is more than preset standard voltage, control unit 1 is controlled
The each switch of system 24 closure, so that each Reactor Branch 3 puts into and exports lagging reactive power；Control unit 1 is examined according to each electric current
Survey the lagging reactive power that part 23 calculates each Reactor Branch 3 output, when the lagging reactive power of each Reactor Branch 3 output is full
During reactive capability needed for foot, svg device 21 does not start, and otherwise svg device 21 starts to supplement lagging reactive power so that end
End mains voltage signal is stablized to preset standard magnitude of voltage.When line voltage has fluctuation, svg device 21 real-time detection electrical network electricity
Pressure value, according to the output of voltage ripple of power network dynamic regulation lagging reactive power, attached in standard value to ensure Network Voltage Stability
Closely.
In the present embodiment, when the voltage signal of voltage detecting part 5 collection is less than preset standard voltage, control unit 1 is controlled
The each switch of system 24 disconnects to excise each Reactor Branch 3；Control unit 1 controls svg device 21 to start output capacitive reactive power
End line voltage is compensated, to stabilize it to preset standard magnitude of voltage.When line voltage has fluctuation, svg device
21 real-time detection line voltage values, according to the output of voltage ripple of power network dynamic regulation reactive power, steady to ensure line voltage
It is scheduled near standard value.
In addition, the present invention is mainly made up of with shunt reactor branch road 3 svg branch road 2, its protection scheme is mainly svg and props up
Road 2 protection is protected with shunt reactor branch road 3, and wherein svg branch road 2 mainly adopts current transformer main body protection and loop protection, this
Body protection is main to include converter module error protection, control system error protection etc., and it is excessively electric that loop protection mainly includes circuit
Pressure protection, circuit overcurrent protection；Shunt reactor branch road 3 protects main inclusion overvoltage protection and overcurrent protection, three-phase
Uneven, current differential protection.
(1) when svg control system breaks down tripping operation, shunt reactor 31 will not trip at once, its shunt reactor
Branch road 3 protection device can detect the non-terminal voltage signal of power supply network, if the non-terminal voltage signal of power supply network is higher than standard voltage value, and
Connection reactor 31 does not exit, and when the non-terminal voltage signal of power supply network is less than standard voltage value, shunt reactor 31 exits, and sends
Svg device 21 fault alarm signal；
(2) when shunt reactor 31 because body or protection control loop break down when tripping, svg device 21 will not be jumped at once
Lock, its svg control system can detect the non-terminal voltage signal of power supply network, when power supply network shows that terminal voltage signal is higher than standard voltage value
When, svg exports lagging reactive power stably non-terminal voltage, until svg maximum output capacity, when power supply network shows that terminal voltage signal is low
When standard voltage value, svg exports capacitive reactive power stably non-terminal voltage, until svg maximum output capacity.Send electricity in parallel
Anti- device 31 fault alarm signal.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention, should be regarded as the protection of the present invention
Scope.
Claims (8)
1. a kind of end Network Voltage Stability system is it is characterised in that include control unit (1), svg branch road (2), multichannel reactance
Device branch road (3) and voltage detecting part (5), described svg branch road (2) and multichannel Reactor Branch for detecting end line voltage
(3) parallel with one another access in the electrical network of end, be provided with svg device (21), described Reactor Branch in described svg branch road (2)
(3) it is provided with reactor (31) in, be provided with described svg branch road (2) and each Reactor Branch (3) for detecting corresponding
The current detecting part (23) of road electric current and for controlling the switch (24) of corresponding branch road break-make, described voltage detecting part (5) with
Described control unit (1) is connected for sending the end mains voltage signal of detection to control unit (1), described control unit
(1) it is connected with described switch (24), be used for being controlled respectively according to the difference between end mains voltage signal and preset standard voltage
The break-make of switch (24) is to realize the switching of corresponding Reactor Branch (3), described control unit (1) and described svg device (21)
It is connected with each current detecting part (23), be used for controlling the work of described svg device (21) with flat according to each current detecting part (23)
Weighing apparatus end line voltage.
2. end according to claim 1 Network Voltage Stability system is it is characterised in that connect in described svg branch road (2)
There is soft charge unit, be used for the precharge before svg device (21) starts, described soft charge unit is parallel with shorting switch.
3. end according to claim 1 and 2 Network Voltage Stability system it is characterised in that described svg branch road (2) and
It is provided with fv arrester in Reactor Branch (3), be used for carrying out overvoltage protection.
4. end according to claim 1 and 2 Network Voltage Stability system it is characterised in that described svg branch road (2) and
It is connected with end electrical network by feeder breaker (4) after multichannel Reactor Branch (3) parallel connection.
5. end according to claim 1 and 2 Network Voltage Stability system is it is characterised in that described Reactor Branch (3)
Quantity be two-way.
6. a kind of control method based on the end Network Voltage Stability system described in any one in claim 1 to 5, it is special
Levy and be, described voltage detecting part (5) is acquired and sends to control unit (1) to the voltage of end electrical network in real time, described
The voltage signal of collection is contrasted by control unit (1) with preset standard voltage signal, calculates voltage difference and required
The reactive capability of output, described control unit (1) controls the switch (24) of each Reactor Branch (3) according to comparing result, with reality
The now switching of each Reactor Branch (3)；The electric current of the corresponding branch road of each current detecting part (23) detection and by current signal send to
Control unit (1), described control unit (1) controls svg device (21) output lagging reactive power or appearance according to each current signal
Property reactive power.
7. control method according to claim 6 is it is characterised in that the voltage gathering when described voltage detecting part (5) is believed
Number more than preset standard voltage when, described control unit (1) control each switch (24) closure so that each Reactor Branch (3) throw
Enter and export lagging reactive power；It is defeated that described control unit (1) calculates each Reactor Branch (3) according to each current detecting part (23)
The lagging reactive power going out, when the lagging reactive power that each Reactor Branch (3) exports meets required reactive capability, described
Svg device (21) does not start, and otherwise svg device (21) starts to supplement lagging reactive power so that end mains voltage signal is steady
Determine to preset standard magnitude of voltage.
8. the control method according to claim 6 or 7 is it is characterised in that the voltage that gathers when described voltage detecting part (5)
When signal is less than preset standard voltage, described control unit (1) controls each switch (24) to disconnect to excise each Reactor Branch
(3)；Described control unit (1) controls svg device (21) startup output capacitive reactive power that end line voltage is compensated,
To stabilize it to preset standard magnitude of voltage.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108390364A (en) * | 2018-05-04 | 2018-08-10 | 安徽徽电科技股份有限公司 | A kind of overhead transmission line end overvoltage inhibiting apparatus |
| CN108808686A (en) * | 2018-07-11 | 2018-11-13 | 云南电网有限责任公司电力科学研究院 | A kind of distribution feeder voltage adaptive controlling setting algorithm |
| CN112186773A (en) * | 2020-09-17 | 2021-01-05 | 中国神华能源股份有限公司神朔铁路分公司 | Traction power supply network tail end voltage stabilizing device and traction power supply network stabilizing system |
| CN112290541A (en) * | 2020-10-15 | 2021-01-29 | 西安热工研究院有限公司 | Method for setting shunt reactor in black start process |
| CN112803432A (en) * | 2019-11-13 | 2021-05-14 | 南京南瑞继保电气有限公司 | One-key sequential control starting and stopping method for magnetic control type parallel reactor |
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| CN104901321A (en) * | 2015-05-29 | 2015-09-09 | 株洲变流技术国家工程研究中心有限公司 | Long-distance cable power transmission and distribution network voltage control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104901321A (en) * | 2015-05-29 | 2015-09-09 | 株洲变流技术国家工程研究中心有限公司 | Long-distance cable power transmission and distribution network voltage control system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390364A (en) * | 2018-05-04 | 2018-08-10 | 安徽徽电科技股份有限公司 | A kind of overhead transmission line end overvoltage inhibiting apparatus |
| CN108808686A (en) * | 2018-07-11 | 2018-11-13 | 云南电网有限责任公司电力科学研究院 | A kind of distribution feeder voltage adaptive controlling setting algorithm |
| CN108808686B (en) * | 2018-07-11 | 2022-04-12 | 云南电网有限责任公司电力科学研究院 | Self-adaptive voltage-regulating and setting algorithm for distribution feeder |
| CN112803432A (en) * | 2019-11-13 | 2021-05-14 | 南京南瑞继保电气有限公司 | One-key sequential control starting and stopping method for magnetic control type parallel reactor |
| CN112186773A (en) * | 2020-09-17 | 2021-01-05 | 中国神华能源股份有限公司神朔铁路分公司 | Traction power supply network tail end voltage stabilizing device and traction power supply network stabilizing system |
| CN112290541A (en) * | 2020-10-15 | 2021-01-29 | 西安热工研究院有限公司 | Method for setting shunt reactor in black start process |
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| CN106340885B (en) | 2019-08-09 |
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