CN205986167U - Cascade compensation device suitable for many loop lines way - Google Patents
Cascade compensation device suitable for many loop lines way Download PDFInfo
- Publication number
- CN205986167U CN205986167U CN201620892067.5U CN201620892067U CN205986167U CN 205986167 U CN205986167 U CN 205986167U CN 201620892067 U CN201620892067 U CN 201620892067U CN 205986167 U CN205986167 U CN 205986167U
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- China
- Prior art keywords
- series
- compensation device
- transformer
- transmission lines
- voltage source
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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]
Abstract
The utility model discloses a cascade compensation device suitable for many loop lines way. Contain at least one voltage source converter, two at least series transformer and an at least multi -winding transformer. One side of two at least series transformer is parallelly connected, opposite side many loop lines way of putting in series, voltage source converter's interchange side connects to series transformer's parallelly connected side generating line through multi -winding transformer to realize the one or more transverter and equallyd divide system's trend function. The application provides a device scheme can independently be installed in power transmission system and used as static synchronous series compensator, also can be as the put in series component parts of power transmission system device of unified power flow controller, convertible static compensator, space power flow controller and unified power quality conditioner. The transverter capacity can be saved to this device, improves application efficiency, the cost is reduced and the area of cascade compensation device.
Description
Technical field
This utility model is related to flexible AC transmission field and in particular to a kind of series compensation being applied to multi circuit transmission lines fills
Put.
Background technology
The equipment of flexible AC transmitting system (FACTS) can be divided into series compensation device, paralleling compensating device and comprehensive control
Device processed.Wherein paralleling compensating device can be directly accessed in the electrical network of various grades, and series compensation device and Comprehensive Control
Device, due 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 has two inverters, and has corresponding transformator to complete to isolate and become
The functions such as pressure.Because SSSC, generally as a kind of additional method of operation of other devices, also can arrange
Enter similar.
The series compensation end of series compensation device or composite control apparatus at present, is all to access electricity by series transformer
Net.China 110kV and above electrical network major part adopt double-circuit line structure, and this is accomplished by installing two sets of series compensation devices, and
Often set series compensation device is required to go by the current rating of each loop line to choose capacity.In most occasions, double-circuit line
Total running current be much smaller than double loop current rating sum, such scheme cause normal when running capacity seriously unrestrained
Take, cost of investment and floor space certainly will be increased, overall losses also increase simultaneously.To the electricity using more loop line line structures
Net, cost, occupation of land and equipment loss will further limit the application of series compensation device.In order to solve above deficiency, improve
FACTS accesses the economy of electrical network, needs a kind of series compensation device being more suitable for multi circuit transmission lines.
Utility model content
The purpose of this utility model, is to provide a kind of series compensation device being applied to multi circuit transmission lines, considers into
Originally, volume and equipment loss, meets economy and the reliability that FACTS accesses electrical network.
In order to reach above-mentioned purpose, solution of the present utility model is：
A kind of series compensation device being applied to multi circuit transmission lines, comprises at least one voltage source converter, at least two strings
Connection transformator, a multiwinding transformer；The side winding parallel of described at least two series transformers connects, opposite side winding
Series connection accesses every back transmission line respectively；The AC of at least one voltage source converter described passes through described multiwinding transformer
Be connected to series transformer is connected in parallel side.
A kind of above-mentioned series compensation device being applied to multi circuit transmission lines, described multiwinding transformer configure multigroup winding with
Voltage source converter connects one by one.
A kind of above-mentioned series compensation device being applied to multi circuit transmission lines, the in parallel of described at least two series transformers connects
Connect side and be provided with ac bus, for being connected in parallel of all transformators.
Above-mentioned a kind of series compensation device being applied to multi circuit transmission lines, described multiwinding transformer and voltage source converter
The winding of connecting side using star-like be directly grounded or star-like resistance grounded or angle-style connection.
Above-mentioned a kind of series compensation device being applied to multi circuit transmission lines, described voltage source converter and multiwinding transformer
Between, be provided between multiwinding transformer and series transformer and between series transformer and transmission line of electricity but be not limited to：Disconnected
One of road device, disconnecting link, spark gap, shunting device or several or whole.
A kind of above-mentioned series compensation device being applied to multi circuit transmission lines, described shunting device be used for AC system alternate or
Bypass between line, concrete device is disconnecting link or bypass breaker or thyristor valve or spark gap.
A kind of above-mentioned series compensation device being applied to multi circuit transmission lines, can independently installed in transmission system, also can conduct
But it is not limited to flow controller and system between THE UPFC, convertible static compensator, SSSC, line
One electric energy regulator series connection accesses the ingredient of transmission line of electricity device.
After such scheme, this utility model achieves the series compensation dress that system load flow divided equally by a kind of multiple inverter
Put.Transformator is divided into valve side winding and line side winding two parts, valve side winding converts total current and circuit to line side
The total current of side winding is equal, and the total current due to the multi circuit transmission lines in normal operation is always much smaller than N* circuit rated current,
The total current that the maximum possible only needing to be chosen as line current to the total current in line side is run converted by therefore all inverters
?；And adopting every loop line road to correspond to a series compensation device, then every series compensation device inverter is converted to line side
The electric current rated current that has to equal to circuit, that is, all inverter total currents be equal to N* circuit rated current；Using this reality
With new scheme, the total current of inverter can be much smaller than N* circuit rated current, that is, before identical output rated voltage
Put, the inverter capacity of this programme will improve series connection much smaller than conventional scheme it might even be possible to reduce the quantity of inverter
The operational efficiency of compensation device, saves equipment cost and the floor space of inverter, improves the economy that FACTS accesses electrical network
Property and reliability.
Brief description
Fig. 1 is a kind of wiring construction schematic diagram that this utility model applies in double-circuit line；
Fig. 2 is a kind of wiring construction schematic diagram that the multiple inverter of this utility model accesses multiwinding transformer；
Fig. 3 is another kind of wiring construction schematic diagram that the multiple inverter of this utility model accesses multiwinding transformer；
Fig. 4 is the wiring construction schematic diagram of two winding parallels access buses of this utility model multiwinding transformer；
Fig. 5 is a kind of connection schematic diagram as THE UPFC ingredient for this utility model；
Specific embodiment
Below in conjunction with the accompanying drawings specific embodiment of the present utility model is described in detail.
This utility model provides a kind of series compensation device being applied to multi circuit transmission lines, comprises at least one voltage source and changes
Stream device, at least two series transformers, multiwinding transformers；The side winding parallel of described at least two series transformers
Connect, opposite side winding is connected respectively and accessed every back transmission line；The AC of at least one voltage source converter described passes through
What described multiwinding transformer was connected to series transformer is connected in parallel side.As shown in figure 1, be connected to double for a voltage source converter
A kind of wiring construction schematic diagram on loop line road.
A kind of aforesaid series compensation device being applied to multi circuit transmission lines, described multiwinding transformer configure multigroup winding with
Voltage source converter connects one by one.As shown in Figure 2 it is considered to procedural compliance when multiple inverters access and independent control, respectively
Voltage source converter is connected to the different windings of multiwinding transformer.
Certainly, in some necessary occasions, such as from multiple stage low capacity inverter in parallel when, also can be by multiple stage voltage source converter
The AC of device is in parallel or packet parallel connection is followed by multiwinding transformer.As shown in figure 3, two voltage source converter ACs are simultaneously
Connection is followed by one group of winding of multiwinding transformer.
A kind of aforesaid series compensation device being applied to multi circuit transmission lines, the in parallel of described at least two series transformers connects
Connect side and be provided with ac bus, for being connected in parallel of all transformators.
As shown in figure 4, the two of multiwinding transformer groups of windings are connected to each one group of winding parallel of two series transformers
Ac bus.
A kind of aforesaid series compensation device being applied to multi circuit transmission lines, described multiwinding transformer and voltage source converter
The winding of connecting side using star-like be directly grounded or star-like resistance grounded or angle-style connection.
A kind of aforesaid series compensation device being applied to multi circuit transmission lines, described voltage source converter and multiwinding transformer
Between, be provided between multiwinding transformer and series transformer and between series transformer and transmission line of electricity but be not limited to：Disconnected
Road device, disconnecting link, spark gap, shunting device.
A kind of aforesaid series compensation device being applied to multi circuit transmission lines, described shunting device be used for AC system alternate or
Bypass between line, concrete device is disconnecting link or chopper or thyristor valve or spark gap.
A kind of aforesaid series compensation device being applied to multi circuit transmission lines, can independently installed in transmission system, also can conduct
But it is not limited to flow controller and system between THE UPFC, convertible static compensator, SSSC, line
One electric energy regulator series connection accesses the ingredient of transmission line of electricity device.As shown in figure 5, it is as THE UPFC
A kind of connection schematic diagram of ingredient.
After such scheme, this utility model achieves the series compensation dress that system load flow divided equally by a kind of multiple inverter
Put.Transformator is divided into valve side winding and line side winding two parts, valve side winding converts total current and circuit to line side
The total current of side winding is equal, and the total current due to the multi circuit transmission lines in normal operation is always much smaller than N* circuit rated current,
The total current that the maximum possible only needing to be chosen as line current to the total current in line side is run converted by therefore all inverters
?；And adopting every loop line road to correspond to a series compensation device, then every series compensation device inverter is converted to line side
The electric current rated current that has to equal to circuit, that is, all inverter total currents be equal to N* circuit rated current；Using this reality
With new scheme, the total current of inverter can be much smaller than N* circuit rated current, that is, before identical output rated voltage
Put, the inverter capacity of this programme will be much smaller than conventional scheme, or even part occasion can reduce the quantity of inverter, carries
The high operational efficiency of series compensation device, saves equipment cost and the floor space of inverter, improves FACTS and access electricity
The economy of net and reliability.
Finally it should be noted that：In conjunction with above-described embodiment, the technical solution of the utility model is only described rather than it is limited
System.Those of ordinary skill in the art are to be understood that：Those skilled in the art can be embodied as to of the present utility model
Mode is modified or equivalent, but these modifications or change are all being applied within pending patent requirements protection domain.
Claims (7)
1. a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Comprise at least one voltage source converter, extremely
Few two series transformers, multiwinding transformers；The side winding parallel of described series transformer connects, opposite side winding
Series connection accesses every back transmission line respectively；The AC of described voltage source converter is connected to series connection by described multiwinding transformer
Transformator be connected in parallel side.
2. as claimed in claim 1 a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Described Multiple coil
The multigroup winding of transformer configuration is connected one by one with voltage source converter.
3. as claimed in claim 1 a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Described series connection becomes
The side that is connected in parallel of depressor is provided with ac bus, for being connected in parallel of all transformators.
4. as claimed in claim 1 a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Described Multiple coil
Transformator is directly grounded or star-like resistance grounded or angle-style using star-like with the winding of voltage source converter connecting side
Connection.
5. as claimed in claim 1 a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Described voltage source
Between inverter and multiwinding transformer, between multiwinding transformer and series transformer and series transformer and transmission line of electricity
Between be equipped with one of chopper, disconnecting link, spark gap or shunting device or several or whole.
6. as claimed in claim 5 a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Described bypass dress
Put for AC system is alternate or line between bypass, concrete device be disconnecting link or bypass breaker or thyristor valve or
Spark gap.
7. as claimed in claim 1 a kind of series compensation device being applied to multi circuit transmission lines it is characterised in that：Described series connection is mended
Repay device independently installed in transmission system, or as THE UPFC, convertible static compensator, Static Synchronous Series
Between compensator, line, flow controller and Research on Unified Power Quality Conditioner series connection access transmission line of electricity device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620892067.5U CN205986167U (en) | 2016-08-16 | 2016-08-16 | Cascade compensation device suitable for many loop lines way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620892067.5U CN205986167U (en) | 2016-08-16 | 2016-08-16 | Cascade compensation device suitable for many loop lines way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205986167U true CN205986167U (en) | 2017-02-22 |
Family
ID=58030786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620892067.5U Expired - Fee Related CN205986167U (en) | 2016-08-16 | 2016-08-16 | Cascade compensation device suitable for many loop lines way |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205986167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159975A (en) * | 2016-08-16 | 2016-11-23 | 南京南瑞继保电气有限公司 | A kind of series compensation device being applicable to multi circuit transmission lines |
-
2016
- 2016-08-16 CN CN201620892067.5U patent/CN205986167U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159975A (en) * | 2016-08-16 | 2016-11-23 | 南京南瑞继保电气有限公司 | A kind of series compensation device being applicable to multi circuit transmission lines |
| CN106159975B (en) * | 2016-08-16 | 2019-12-06 | 南京南瑞继保电气有限公司 | Series compensation device suitable for multi-circuit line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20200816 |