CN106159976A - A kind of series compensation device - Google Patents
A kind of series compensation device Download PDFInfo
- Publication number
- CN106159976A CN106159976A CN201610676535.XA CN201610676535A CN106159976A CN 106159976 A CN106159976 A CN 106159976A CN 201610676535 A CN201610676535 A CN 201610676535A CN 106159976 A CN106159976 A CN 106159976A
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- CN
- China
- Prior art keywords
- phase
- compensation device
- series compensation
- voltage source
- source converter
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
- H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The open a kind of series compensation device of the present invention.Comprise at least two voltage source converter, at least two three-phase transformers and at least one three-phase reactor.Voltage source converter accesses multi circuit transmission lines by three-phase transformer series connection, and the AC of each voltage source converter is interconnected by three-phase reactor, it is achieved thereby that system load flow function divided equally by multiple inverter.The device scheme that the application provides can independently installed use as SSSC in transmission system, it is possible to connects as flow controller between THE UPFC, convertible static compensator, line and Research on Unified Power Quality Conditioner and accesses the ingredient of transmission system device.This device can save inverter capacity, improves the application efficiency of series compensation device, reduces cost and floor space.
Description
Technical field
The present invention relates to flexible AC transmission field, be specifically related to a kind of series compensation device.
Background technology
The equipment of flexible AC transmitting system (FACTS) can be divided into series compensation device, paralleling compensating device and comprehensively control
Device processed.During wherein paralleling compensating device can be directly accessed the electrical network of various grade, and series compensation device and Comprehensive Control
Device, owing to need to connect access electrical network one end, needs combined reliability, motility and safety, studies its access way.
In series compensation device and composite control apparatus, SSSC (SSSC), THE UPFC
(UPFC), between line flow controller (IPFC) and convertible static compensator (CSC) be all can improve power transmitting capability and
The flexible transmission equipment of ability of regulation and control；Also have a kind of Research on Unified Power Quality Conditioner (UPQC), the electric energy matter of circuit can be improved
Amount.In addition to SSSC, other equipment have two inverters, and have corresponding transformator complete isolation and become
The functions such as pressure.Because SSSC is generally as the additional method of operation of one of other devices, so also can arrange
Enter similar.
Series compensation device or the series compensation end of composite control apparatus at present, is all to access electricity by series transformer
Net.China 110kV and above electrical network major part use double-circuit line structure, and this is accomplished by two series transformers by two set series connection
Compensation device is connected access double-circuit line respectively, and often overlaps series compensation device and be required to go choosing by the current rating of each loop line
The amount of trying to please.In overwhelming majority occasion, total running current of double-circuit line is much smaller than double loop current rating sum, above-mentioned side
Capacity serious waste when case causes properly functioning, certainly will add cost of investment and floor space, and overall losses also increases simultaneously
Greatly.Electrical network to the more loop line line structures of employing, cost, occupation of land and equipment loss will further limit series compensation device
Application.In order to solve above deficiency, improve FACTS and access the economy of electrical network, need a kind of string being more suitable for multi circuit transmission lines
Connection compensation device.
Summary of the invention
The purpose of the present invention, is to provide a kind of series compensation device being applicable to multi circuit transmission lines, considering cost, body
Amass and equipment loss, meet FACTS and access economy and the reliability of electrical network.
In order to reach above-mentioned purpose, the solution of the present invention is:
A kind of series compensation device, comprise at least two voltage source converter, at least two three-phase transformers, at least one
Three-phase reactor；The AC of described at least two voltage source converter is interconnected by described at least one three-phase reactor；Institute
The side winding stating at least two three-phase transformers is connected to above-mentioned interconnected branches, and opposite side winding is connected respectively and accessed every loop line
Road.
Above-mentioned a kind of series compensation device, the quantity of three-phase transformer is equal with time number of circuit, and every three phase transformations
Depressor accesses a loop line road by split-phase series connection.
Above-mentioned a kind of series compensation device, described voltage source converter all can be directly or by reactor and all three-phases
Transformator connects.
Above-mentioned a kind of series compensation device, described three-phase transformer is connected the winding of side and uses star with voltage source converter
Type is directly grounded or star-like resistance grounded or the connection of angle-style.
Above-mentioned a kind of series compensation device, when described three-phase transformer uses three-phase integrated structure, includes one
The balance winding no-load running of angle-style.
Above-mentioned a kind of series compensation device, between described voltage source converter and three-phase transformer, three-phase transformer with
Between transmission line of electricity and three-phase reactor branch road is provided with but is not limited to: in chopper, disconnecting link, spark gap, shunting device
Plant or several or whole.
Above-mentioned a kind of series compensation device, described shunting device, for AC system is alternate or bypasses between line, specifically fills
It is set to disconnecting link or bypass breaker or thyristor valve or spark gap.
Above-mentioned a kind of series compensation device, can be independently installed in transmission system, it is possible to as but be not limited to Unified Power Flow
Flow controller and Research on Unified Power Quality Conditioner between controller, convertible static compensator, SSSC, line
Series connection accesses the ingredient of transmission line of electricity device.
After using such scheme, present invention achieves a kind of multiple inverter and divide equally the series compensation device of system load flow.
Transformator is divided into valve side winding and line side winding two parts, the total current of valve side winding conversion to line side and line side around
The total current of group is equal, owing to when properly functioning, the total current of multi circuit transmission lines is always much smaller than N* circuit rated current, therefore
The conversion of all inverters has only to be chosen as the total current that the maximum possible of line current is run to the total current in line side；
And using the corresponding series compensation device in every loop line road, then the electric current to line side converted by every series compensation device inverter
Have to be equal to the rated current of circuit, the most all inverter total currents are equal to N* circuit rated current；Use the side of the present invention
Case, the total current of inverter can be much smaller than N* circuit rated current, i.e. on the premise of identical output rated voltage, this programme
Inverter capacity will be much smaller than conventional scheme, it might even be possible to reduce the quantity of inverter, improve series compensation device
Operational efficiency, saves equipment cost and the floor space of inverter, improves FACTS and accesses the economy of electrical network and reliable
Property.
Accompanying drawing explanation
Fig. 1 is that the present invention applies a kind of wiring construction schematic diagram at double-circuit line；
Fig. 2 is that the present invention applies the another kind of wiring construction schematic diagram at double-circuit line；
Fig. 3 is that the present invention applies a kind of Universal connection structural representation at double-circuit line；
Fig. 4 is that the present invention applies a kind of Universal connection structural representation containing three inverters at double-circuit line；
Fig. 5 is that the present invention applies a kind of Universal connection structural representation on three loop line roads；
Fig. 6 is the present invention a kind of connection schematic diagram as THE UPFC ingredient；
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in detail.
The invention provides a kind of series compensation device, comprise at least two voltage source converter, at least two three phase transformations
Depressor, at least one three-phase reactor；The AC of described at least two voltage source converter passes through described at least one three-phase
Reactor interconnects；The side winding of described at least two three-phase transformers is connected to above-mentioned interconnected branches, and opposite side winding is gone here and there respectively
Couple into every loop line road.
As it is shown in figure 1, apply a kind of wiring construction schematic diagram at double-circuit line for the present invention, comprise three-phase transformer and
Voltage source converter each two and three-phase reactor one.Three-phase transformer directly connects with the AC of voltage source converter
Connecing, two connection branch roads are interconnected by three-phase reactor.
As in figure 2 it is shown, apply another the wiring construction schematic diagram at double-circuit line for the present invention, comprise three phase-change pressure
Each two of device, voltage source converter and three-phase reactor.The inverter side of three-phase transformer is connected in parallel, then passes through three-phase reactor
Device is connected with the AC of voltage source converter respectively.
Aforesaid a kind of series compensation device, the quantity of three-phase transformer is equal with time number of multi circuit transmission lines, and every three
Phase transformer accesses a loop line road by split-phase series connection.
Aforesaid a kind of series compensation device, each voltage source converter all can be directly or by reactor and all three-phases
Transformator connects.
Aforesaid a kind of series compensation device, the winding employing that three-phase transformer is connected with voltage source converter is star-like directly
Ground connection or star-like resistance grounded or the connection of angle-style.
Aforesaid a kind of series compensation device, when three-phase transformer uses three-phase integrated structure, includes an angle-style
Balance winding no-load running.
Aforesaid a kind of series compensation device, between voltage source converter and three-phase transformer, three-phase transformer and transmission of electricity
Between circuit and three-phase reactor branch road is provided with but is not limited to: chopper, disconnecting link, spark gap, shunting device are some or all
Equipment.
Aforesaid a kind of series compensation device, shunting device is alternate for AC system or bypasses between line, and concrete device is
Chopper or thyristor valve or spark gap.
As it is shown on figure 3, apply a kind of Universal connection structural representation at double-circuit line, wherein three phase-change pressure for the present invention
Device and each two of voltage source converter, reactor L1～L5 is optional reactor.It is embodied as: in reactor L1, L2, L5 extremely
Selecting a reactor less, remaining is arbitrarily arranged in pairs or groups；Unselected reactor position is that wire connects.
When single voltage source converter capacity is bigger than normal, dilatation can be carried out by increasing inverter quantity.As shown in Figure 4, for
The present invention applies another the Universal connection structural representation at double-circuit line, wherein three-phase transformer two, voltage source converter
Device three, reactor L1～L6 is optional reactor.It is embodied as: reactor L1, L2, L5 at least select a reactance
Device, at least selects a reactor in reactor L1, L5, L6, at least select a reactor in reactor L2, L6, and remaining is appointed
Meaning collocation；Unselected reactor position is that wire connects.
As it is shown in figure 5, apply a kind of Universal connection structural representation on three loop line roads, wherein three phase-change pressure for the present invention
Device three, fixed voltage source inverter two, optional voltage source converter 1, reactor L1～L8 is optional reactor.Work as electricity
When Source Con-verters capacity requirement is less, can reduce by an inverter and come cost-effective.It is embodied as: during three inverters,
Reactor L1, L2, L7 at least select a reactor, reactor L1, L3, L7, L8 at least select a reactor, reactance
At least selecting a reactor in device L2, L3, L8, remaining is arbitrarily arranged in pairs or groups and unselected reactor position is that wire connects；Two
During inverter, at least selecting a reactor in reactor L1, L2, L7, L3 reactor is removed, and remaining is arbitrarily arranged in pairs or groups and does not selects
Reactor position is that wire connects.
Aforesaid a kind of series compensation device, can be independently installed in transmission system, it is possible to as but be not limited to Unified Power Flow
Flow controller and Research on Unified Power Quality Conditioner between controller, convertible static compensator, SSSC, line
Series connection accesses the ingredient of transmission line of electricity device.As shown in Figure 6, apply at double-circuit line and as Unified Power Flow for the present invention
A kind of mode of connection schematic diagram of controller ingredient, two of which series compensation device share a side in parallel voltage source and changes
Stream device and transformator.
After using such scheme, present invention achieves a kind of multiple inverter and divide equally the series compensation device of system load flow.
Transformator is divided into valve side winding and line side winding two parts, the total current of valve side winding conversion to line side and line side around
The total current of group is equal, owing to when properly functioning, the total current of multi circuit transmission lines is always much smaller than N* circuit rated current, therefore
The conversion of all inverters has only to be chosen as the total current that the maximum possible of line current is run to the total current in line side；
And using the corresponding series compensation device in every loop line road, then the electric current to line side converted by every series compensation device inverter
Have to be equal to the rated current of circuit, the most all inverter total currents are equal to N* circuit rated current；Use the side of the present invention
Case, the total current of inverter can be much smaller than N* circuit rated current, i.e. on the premise of identical output rated voltage, this programme
Inverter capacity will be much smaller than conventional scheme, even part occasion can reduce the quantity of inverter, improve series connection and mending
Repay the operational efficiency of device, save equipment cost and the floor space of inverter, improve FACTS and access the economy of electrical network
And reliability.
Finally should be noted that: combine above-described embodiment and only illustrate that technical scheme is not intended to limit.Institute
The those of ordinary skill in genus field is to be understood that: the detailed description of the invention of the present invention can be repaiied by those skilled in the art
Change or equivalent, but these amendments or change are all within the patent requirements protection domain that application is awaited the reply.
Claims (8)
1. a series compensation device, it is characterised in that: comprise at least two voltage source converter, at least two three phase-change pressure
Device, at least one three-phase reactor；The AC of described voltage source converter is interconnected by described three-phase reactor, forms interconnection
Branch road；The side winding of described three-phase transformer is connected to above-mentioned interconnected branches, and opposite side winding is connected respectively and accessed every loop line road.
2. a kind of series compensation device as claimed in claim 1, it is characterised in that: the quantity of three-phase transformer is returned with circuit
Number is equal, and the side winding split-phase series connection of every three-phase transformer accesses a loop line road.
3. series compensation device as claimed in claim 1 a kind of, it is characterised in that: described voltage source converter all can directly or
It is connected with all three-phase transformers by reactor.
4. a kind of series compensation device as claimed in claim 1, it is characterised in that: described three-phase transformer and voltage source converter
Device connects the winding of side and uses star-like being directly grounded or star-like resistance grounded or the connection of angle-style.
5. a kind of series compensation device as claimed in claim 1, it is characterised in that: described three-phase transformer uses three-phase integrated
Structure time, include the balance winding no-load running of an angle-style.
6. a kind of series compensation device as claimed in claim 1, it is characterised in that: described voltage source converter and three phase-change pressure
Between device, between three-phase transformer and transmission line of electricity and three-phase reactor branch road is provided with chopper, disconnecting link, spark gap or side
One in the device of road or several or whole.
7. a kind of series compensation device as claimed in claim 6, it is characterised in that: described shunting device is used for AC system phase
Between or line between bypass, concrete device is disconnecting link or bypass breaker or thyristor valve or spark gap.
8. series compensation device as claimed in claim 1 a kind of, it is characterised in that: described series compensation device independently installed in
Transmission system, or, as trend between THE UPFC, convertible static compensator, SSSC, line
One in controller and Research on Unified Power Quality Conditioner, series connection accesses the ingredient of transmission line of electricity device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676535.XA CN106159976A (en) | 2016-08-16 | 2016-08-16 | A kind of series compensation device |
| PCT/CN2017/097469 WO2018033058A1 (en) | 2016-08-16 | 2017-08-15 | Series compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676535.XA CN106159976A (en) | 2016-08-16 | 2016-08-16 | A kind of series compensation device |
Publications (1)
| Publication Number | Publication Date |
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| CN106159976A true CN106159976A (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610676535.XA Pending CN106159976A (en) | 2016-08-16 | 2016-08-16 | A kind of series compensation device |
Country Status (2)
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| CN (1) | CN106159976A (en) |
| WO (1) | WO2018033058A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018033058A1 (en) * | 2016-08-16 | 2018-02-22 | 南京南瑞继保电气有限公司 | Series compensation device |
| CN108233390A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of protection system of the series compensation equipment based on spark gap setting |
| CN108233342A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of protective device of series compensation equipment |
| CN108233389A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of protection system of series compensation equipment |
| CN108233354A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of series compensation equipment protection system of parallel-connection structure |
| CN108233341A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of series compensation equipment protective device of parallel-connection structure |
| CN108521126A (en) * | 2018-05-28 | 2018-09-11 | 南京南瑞继保电气有限公司 | A kind of Hybrid power filter and its control method and device |
| CN108551173A (en) * | 2018-05-28 | 2018-09-18 | 南京南瑞继保电气有限公司 | A kind of series and parallel device and its control method and device |
| CN108777488A (en) * | 2018-05-28 | 2018-11-09 | 南京南瑞继保电气有限公司 | A kind of series compensator and its control method and device |
| CN109932578A (en) * | 2017-12-15 | 2019-06-25 | 广州西门子变压器有限公司 | The method and apparatus that temperature rise test is carried out to a transformer to be measured |
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| WO2018033058A1 (en) * | 2016-08-16 | 2018-02-22 | 南京南瑞继保电气有限公司 | Series compensation device |
| CN108233390A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of protection system of the series compensation equipment based on spark gap setting |
| CN108233342A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of protective device of series compensation equipment |
| CN108233389A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of protection system of series compensation equipment |
| CN108233354A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of series compensation equipment protection system of parallel-connection structure |
| CN108233341A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of series compensation equipment protective device of parallel-connection structure |
| CN109932578A (en) * | 2017-12-15 | 2019-06-25 | 广州西门子变压器有限公司 | The method and apparatus that temperature rise test is carried out to a transformer to be measured |
| CN109932578B (en) * | 2017-12-15 | 2024-04-02 | 广州西门子能源变压器有限公司 | Method and device for carrying out temperature rise test on transformer to be tested |
| CN108551173A (en) * | 2018-05-28 | 2018-09-18 | 南京南瑞继保电气有限公司 | A kind of series and parallel device and its control method and device |
| CN108777488A (en) * | 2018-05-28 | 2018-11-09 | 南京南瑞继保电气有限公司 | A kind of series compensator and its control method and device |
| CN108521126A (en) * | 2018-05-28 | 2018-09-11 | 南京南瑞继保电气有限公司 | A kind of Hybrid power filter and its control method and device |
| CN108777488B (en) * | 2018-05-28 | 2023-06-27 | 南京南瑞继保电气有限公司 | Series compensator and control method and device thereof |
| CN108551173B (en) * | 2018-05-28 | 2023-06-27 | 南京南瑞继保电气有限公司 | Series-parallel compensator and control method and device thereof |
| CN108521126B (en) * | 2018-05-28 | 2023-06-27 | 南京南瑞继保电气有限公司 | Hybrid compensator and control method and device thereof |
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