CN107846009B - Wiring device - Google Patents

Wiring device Download PDF

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Publication number
CN107846009B
CN107846009B CN201610829640.2A CN201610829640A CN107846009B CN 107846009 B CN107846009 B CN 107846009B CN 201610829640 A CN201610829640 A CN 201610829640A CN 107846009 B CN107846009 B CN 107846009B
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CN
China
Prior art keywords
circuit
wiring branch
breaker
contact
breaker wiring
Prior art date
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.)
Active
Application number
CN201610829640.2A
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Chinese (zh)
Other versions
CN107846009A (en
Inventor
谢珍建
吴锁平
黄如海
汪惟源
王荃荃
孙文涛
吴晨
潘磊
邱德峰
姜崇学
鲁江
王震泉
熊静
宗柳
王莹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NR Electric Co Ltd
NR Engineering Co Ltd
Economic and Technological Research Institute of State Grid Jiangsu Electric Power Co Ltd
China Energy Engineering Group Jiangsu Power Design Institute Co Ltd
Original Assignee
NR Electric Co Ltd
NR Engineering Co Ltd
Economic and Technological Research Institute of State Grid Jiangsu Electric Power Co Ltd
China Energy Engineering Group Jiangsu Power Design Institute Co Ltd
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Publication date
Application filed by NR Electric Co Ltd, NR Engineering Co Ltd, Economic and Technological Research Institute of State Grid Jiangsu Electric Power Co Ltd, China Energy Engineering Group Jiangsu Power Design Institute Co Ltd filed Critical NR Electric Co Ltd
Priority to CN201610829640.2A priority Critical patent/CN107846009B/en
Publication of CN107846009A publication Critical patent/CN107846009A/en
Application granted granted Critical
Publication of CN107846009B publication Critical patent/CN107846009B/en
Active legal-status Critical Current
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Classifications

    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • 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 wiring device, comprising: the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit are connected between a first bus and a second bus; the first power transmission line is connected to the first multi-breaker wiring branch circuit; the second power transmission line is connected with a second multi-breaker wiring branch circuit; the first compensator is connected to the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit; at least one breaker is arranged between the contact point of the first compensator and the first multi-breaker wiring branch, the contact point of the first power transmission line and the multi-breaker wiring branch, and the contact points of the first bus, the second bus and the first multi-breaker wiring branch; at least one breaker is arranged between the contact point of the first compensator and the second multi-breaker wiring branch, the contact point of the second transmission line and the second multi-breaker wiring branch, and the contact points of the first bus and the second multi-breaker wiring branch.

Description

Wiring device
Technical Field
The invention relates to a circuit wiring technology, in particular to a wiring device.
Background
The flexible alternating current transmission system (FACTS, flexible Alternative Current Transmission Systems) comprises a series compensation device, a parallel compensation device and a comprehensive control device. The parallel compensation device can be directly connected into various grades of power grids, and the series compensation device and the comprehensive control device can be connected into the power grids only by connecting one end in series.
At present, a series transformer is connected in series with a power transmission line at the series compensation end of the series compensation device and the comprehensive control device. In many applications, compensating different lines in series for different time periods may significantly enhance the power flow regulation capability. In the prior art, a plurality of transmission lines are respectively connected with a series transformer, and then the series transformers which are connected are switched and selected through the output end of the converter. The mode is necessary to ensure that one series transformer always runs in a bypass mode at any time, so that resource waste and cost are increased; and when the access line is switched, the whole device is required to be powered off and then operated, and the converter cannot be switched without power failure. And when any of the line series side bypass switches or transformers is in trouble, the transmission line must be stopped with accompanying time, resulting in an enlarged accident.
Disclosure of Invention
In order to solve the existing technical problems, the embodiment of the invention expects to provide a wiring device which can realize time-sharing series compensation and uninterrupted switching of a plurality of transmission lines.
The technical scheme of the embodiment of the invention is realized as follows:
according to an aspect of an embodiment of the present invention, there is provided a wiring device including: the system comprises a first multi-breaker wiring branch circuit formed by connecting at least three breakers in series, a second multi-breaker wiring branch circuit formed by connecting at least three breakers in series, a first compensator, a first power transmission line and a second power transmission line; the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit are respectively connected between a first bus and a second bus;
The first power transmission line is connected to the first multi-breaker wiring branch circuit; the second power transmission line is connected to the second multi-breaker wiring branch circuit;
the output end of the first compensator is respectively connected with the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit; at least one breaker is arranged between the output end of the first compensator and the contact of the first multi-breaker wiring branch, the contact of the first power transmission line and the first multi-breaker wiring branch and the contact of the first bus, the second bus and the first multi-breaker wiring branch; and at least one breaker is arranged between the output end of the first compensator and the contact of the second multi-breaker wiring branch, the contact of the second power transmission line and the second multi-breaker wiring branch and the contact of the first bus, the second bus and the second multi-breaker wiring branch.
In the above scheme, the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit are formed by connecting three breakers in series; the direction of the contact point on the first multi-breaker wiring branch line from the first bus to the second bus is as follows: the contact point of the first bus and the first multi-breaker wiring branch, the contact point of the first transmission line and the first multi-breaker wiring branch, the contact point of the first compensator and the first multi-breaker wiring branch and the contact point of the second bus and the first multi-breaker wiring branch;
Or a contact of the first bus with the first multi-breaker wiring branch, a contact of the first compensator with the first multi-breaker wiring branch, a contact of the first transmission line with the first multi-breaker wiring branch, and a contact of the second bus with the first multi-breaker wiring branch;
the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact point of the first bus and the second multi-breaker wiring branch, the contact point of the second transmission line and the second multi-breaker wiring branch, the contact point of the first compensator and the second multi-breaker wiring branch and the contact point of the second bus and the second multi-breaker wiring branch;
or the contact point of the first bus and the second multi-breaker wiring branch, the contact point of the first compensator and the second multi-breaker wiring branch, the contact point of the second transmission line and the second multi-breaker wiring branch and the contact point of the second bus and the second multi-breaker wiring branch.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar with the first multi-breaker wiring branch, the contact of the first transmission line with the first multi-breaker wiring branch, the contact of the first compensator with the first multi-breaker wiring branch, and the contact of the second busbar with the first multi-breaker wiring branch, include:
When the first bus and the second bus are normal in operation, all the circuit breakers on the wiring branches of the second multi-circuit breaker are closed, and meanwhile, the contact points of the first power transmission line and the wiring branches of the first multi-circuit breaker and the circuit breakers between the contact points of the first compensator and the wiring branches of the first multi-circuit breaker are closed; disconnecting the first transmission line from the contact of the first multi-breaker wiring branch and the breaker between the first bus and the contact of the first multi-breaker wiring branch; and the contact point of the first compensator and the first multi-breaker wiring branch circuit and the circuit breaker between the second bus and the contact point of the first multi-breaker wiring branch circuit are disconnected.
In the above-described arrangement, the first and second embodiments, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar with the first multi-breaker wiring branch, the contact of the first compensator with the first multi-breaker wiring branch, the contact of the first transmission line with the first multi-breaker wiring branch, and the contact of the second busbar with the first multi-breaker wiring branch, include:
When the first bus and the second bus are normal in operation, all the circuit breakers on the wiring branches of the second multi-circuit breaker are closed, and meanwhile, the contact points of the first power transmission line and the wiring branches of the first multi-circuit breaker and the circuit breakers between the contact points of the first compensator and the wiring branches of the first multi-circuit breaker are closed; disconnecting the first transmission line from the contact of the first multi-breaker wiring branch and the breaker between the second bus and the contact of the first multi-breaker wiring branch; the first compensator is disconnected from the circuit breaker between the junction of the first multi-circuit breaker wiring branch and the junction of the first bus bar and the first multi-circuit breaker wiring branch.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus with the second multiple breaker wiring branch, the contact of the second transmission line with the second multiple breaker wiring branch, the contact of the first compensator with the second multiple breaker wiring branch, and the contact of the second bus with the second multiple breaker wiring branch, include:
When the first bus and the second bus are normal in operation, all the circuit breakers on the first multi-circuit breaker wiring branch are closed, and meanwhile, the contact points of the second power transmission line and the second multi-circuit breaker wiring branch and the circuit breakers between the first compensator and the contact points of the second multi-circuit breaker wiring branch are closed; disconnecting the contact of the second power transmission line with the second multi-circuit breaker wiring branch and the circuit breaker between the first bus and the contact of the second multi-circuit breaker wiring branch; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus with the second multi-breaker wiring branch, the contact of the first compensator with the second multi-breaker wiring branch, the contact of the second transmission line with the second multi-breaker wiring branch, and the contact of the second bus with the second multi-breaker wiring branch, include:
When the first bus and the second bus are normal in operation, all the circuit breakers on the first multi-circuit breaker wiring branch are closed, and meanwhile, the contact points of the second power transmission line and the second multi-circuit breaker wiring branch and the circuit breakers between the first compensator and the contact points of the second multi-circuit breaker wiring branch are closed; disconnecting the contact of the second power transmission line with the second multi-circuit breaker wiring branch and the circuit breaker between the second bus and the contact of the second multi-circuit breaker wiring branch; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the first bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
When the first bus fails, the connection point between the first power transmission line and the first multi-breaker wiring branch circuit and the circuit breaker between the first compensator and the connection point between the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the second bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first bus fails, the connection point between the first power transmission line and the first multi-breaker wiring branch circuit and the circuit breaker between the first compensator and the connection point between the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the second bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the second bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
When the first bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the second bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first power transmission line is compensated in series and the second bus fails, the contact point of the first power transmission line and the first multi-breaker wiring branch circuit and the circuit breaker between the contact point of the first compensator and the first multi-breaker wiring branch circuit are closed; the first multiple breaker wiring other circuit breakers of the branch circuit are all opened; the contacts of the first bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first power transmission line is subjected to series compensation and the second bus fails, the contact point of the first power transmission line and the first multi-breaker wiring branch circuit and the breaker between the first compensator and the contact point of the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the first bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
When the second bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the first bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first power transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the second bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the first bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first power transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first compensator fails, the contact point of the first compensator and the first multi-breaker wiring branch circuit and the breaker between the first power transmission line and the contact point of the first multi-breaker wiring branch circuit are disconnected; the contact of the first compensator with the first multi-breaker wiring branch and the circuit breaker between the second bus and the contact of the first multi-breaker wiring branch are disconnected; and the circuit breakers between the first transmission line and the contact of the first multi-circuit breaker wiring branch circuit and the contact of the first bus and the first multi-circuit breaker wiring branch circuit are closed.
In the above scheme, the direction of the contact point on the first multi-breaker wiring branch from the first bus to the second bus is as follows: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
When the first compensator fails, the contact point of the first compensator and the first multi-breaker wiring branch circuit and the breaker between the first power transmission line and the contact point of the first multi-breaker wiring branch circuit are disconnected; the contact of the first compensator and the first multi-breaker wiring branch and the breaker between the first bus and the contact of the first multi-breaker wiring branch are disconnected; and the circuit breakers between the joints of the first transmission line and the first multi-circuit breaker wiring branch circuit and the joints of the second bus and the first multi-circuit breaker wiring branch circuit are closed.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first compensator fails, the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second power transmission line and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected; the contacts of the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the first bus and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
In the above scheme, the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first compensator fails, the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second power transmission line and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected; the contacts of the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second bus bar and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the first bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
In the above scheme, the device further includes: the first compensator is connected with the first multi-breaker wiring branch and the second multi-breaker wiring branch through the series transformer; wherein,
The series transformer is connected with one side winding of the first compensator and is connected with the first compensator in a star-shaped or angle-shaped wiring mode; the series transformer is connected with one side winding of the power transmission line and is connected with the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit in a split-phase series connection mode.
In the above scheme, the device further includes: and the bypass element is arranged on one side of the series transformer, which is used for connecting the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit, and is used for performing bypass isolation on the first compensator when the first compensator fails.
In the above scheme, the device further includes: a second compensator;
the second compensator is connected with the first compensator in series, and the output end of the second compensator is connected with a circuit breaker connected with a third bus.
In the above scheme, the device further includes: and the second compensator is connected with a circuit breaker connected with the third bus through the parallel transformer.
In the above scheme, the first compensator or the second compensator is an inverter.
An embodiment of the present invention provides a wiring device, including: the system comprises a first multi-breaker wiring branch circuit formed by connecting at least three breakers in series, a second multi-breaker wiring branch circuit formed by connecting at least three breakers in series, a first compensator, a first power transmission line and a second power transmission line; the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit are respectively connected between a first bus and a second bus; the first power transmission line is connected to the first multi-breaker wiring branch circuit; the second power transmission line is connected to the second multi-breaker wiring branch circuit; the output end of the first compensator is respectively connected with the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit; at least one breaker is arranged between the output end of the first compensator and the contact of the first multi-breaker wiring branch, the contact of the first power transmission line and the multi-breaker wiring branch and the contact of the first bus, the second bus and the first multi-breaker wiring branch; and at least one breaker is arranged between the output end of the first compensator and the contact of the second multi-breaker wiring branch, the contact of the second power transmission line and the second multi-breaker wiring branch and the contact of the first bus, the second bus and the second multi-breaker wiring branch. Therefore, the first compensator is connected with the two multi-breaker branches, so that time-sharing series compensation of the compensator on the two lines is realized, the device does not need to be powered off during line switching, and the flexibility, the reliability and the safety of the power grid are improved.
Drawings
FIG. 1 is a schematic diagram showing the structural components of a wiring device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a star connection for a side winding of a series transformer connected to a compensator according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a wiring structure of a dual-circuit and dual-line in an embodiment of the invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
FIG. 1 is a schematic diagram showing the structural components of a wiring device according to an embodiment of the present invention; as shown in fig. 1, the apparatus includes: a first multi-breaker wiring branch 101 formed by at least three circuit breakers in series, a second multi-breaker wiring branch 102 formed by at least three circuit breakers in series, a first compensator 103, a first transmission line 104 and a second transmission line 105; wherein,
the first multi-breaker wiring branch circuit 101 and the second multi-breaker wiring branch circuit 102 are respectively connected between a first bus bar 106 and a second bus bar 107;
the first power transmission line 104 is connected to the first multi-breaker wiring branch 101; the second power transmission line 105 is connected to the second multiple breaker wiring branch 102;
The output end of the first compensator 103 is connected to the first multi-breaker wiring branch circuit 101 and the second multi-breaker wiring branch circuit 102 respectively; at least one breaker is arranged between the output end of the first compensator 103 and the junction of the first multi-breaker wiring branch circuit 101, the junction of the first power transmission line 104 and the first multi-breaker wiring branch circuit 101, and the junctions of the first bus 106, the second bus 107 and the first multi-breaker wiring branch circuit 101;
at least one breaker is disposed between the output end of the first compensator 103 and the junction of the second multi-breaker wiring branch 102, the junction of the second power transmission line 105 and the second multi-breaker wiring branch 102, and the junctions of the first bus 106, the second bus 107 and the second multi-breaker wiring branch 102.
Here, the first compensator 103 may be an inverter, and the first and second multi-breaker-wiring branches 101 and 102 may each be three-half-breaker-wiring branches formed of three breakers; the directions of the contacts on the first multi-breaker wiring branch circuit 101 from the first bus bar 106 to the second bus bar 107 are as follows: a contact of the first bus 106 with the first multi-breaker wiring branch 101, a contact of the first transmission line 104 with the first multi-breaker wiring branch 101, a contact of the first compensator 103 with the first multi-breaker wiring branch 101, and a contact of the second bus 107 with the first multi-breaker wiring branch 101; or the junction of the first bus bar 106 with the first multi-breaker wiring branch circuit 101, the junction of the first compensator 103 with the first multi-breaker wiring branch circuit 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch circuit 101, and the junction of the second bus bar 107 with the first multi-breaker wiring branch circuit 101;
The direction from the first bus 106 to the second bus 107 of the contacts on the second multi-breaker wiring branch 102 is: a contact of the first bus 106 with the second multiple breaker wiring branch 102, a contact of the second transmission line 105 with the second multiple breaker wiring branch 102, a contact of the first compensator 103 with the second multiple breaker wiring branch 102, and a contact of the second bus 107 with the second multiple breaker wiring branch 102; or the junction of the first bus bar 106 with the second multiple breaker-wiring branch 102, the junction of the first compensator 103 with the second multiple breaker-wiring branch 102, the junction of the second transmission line 105 with the second multiple breaker-wiring branch 102, and the junction of the second bus bar 107 with the second multiple breaker-wiring branch 102.
Here, the directions of the contacts on the first multi-breaker wiring branch circuit 101 from the first bus bar 106 to the second bus bar 107 are as follows: the contact of the first bus bar 106 with the first multi-breaker wiring branch circuit 101, the contact of the first power transmission line 104 with the first multi-breaker wiring branch circuit 101, the contact of the first compensator 103 with the first multi-breaker wiring branch circuit 101, and the contact of the second bus bar 107 with the first multi-breaker wiring branch circuit 101, comprise:
When the first power transmission line 104 is subjected to series compensation and the first bus 106 and the second bus 107 are normal in operation, all the circuit breakers on the second multi-circuit breaker wiring branch 105 are closed, and meanwhile, the circuit breakers between the contact points of the first power transmission line 104 and the first multi-circuit breaker wiring branch 101 and the contact points of the first compensator 103 and the first multi-circuit breaker wiring branch 101 are closed; the circuit breaker between the contact of the first power transmission line 104 and the first multi-circuit breaker wiring branch 101 and the contact of the first bus 106 and the first multi-circuit breaker wiring branch 101 is disconnected; the circuit breaker between the contact of the first compensator 103 with the first multiple circuit breaker wiring branch 101 and the contact of the second bus bar 107 with the first multiple circuit breaker wiring branch 101 is opened. For example, when the first power transmission line 104 is subjected to series compensation, and the first bus 106 and the second bus 107 are both operating normally, the circuit breakers S4, S5 and S6 on the second multi-circuit breaker wiring branch 105 are all closed, and simultaneously, the circuit breakers S1 and S3 on the first multi-circuit breaker wiring branch 101 are opened, and the circuit breaker S2 is closed.
The directions of the contacts on the first multi-breaker wiring branch circuit 101 from the first bus bar 106 to the second bus bar 107 are as follows: the contact of the first bus bar 106 with the first multi-breaker wiring branch circuit 101, the contact of the first compensator 103 with the first multi-breaker wiring branch circuit 101, the contact of the first power transmission line 104 with the first multi-breaker wiring branch circuit 101, and the contact of the second bus bar 107 with the first multi-breaker wiring branch circuit 101, include:
when the first power transmission line 104 is subjected to series compensation and the first bus 106 and the second bus 107 are normal in operation, all the circuit breakers on the second multi-circuit breaker wiring branch 105 are closed, and meanwhile, the circuit breakers between the contact points of the first power transmission line 104 and the first multi-circuit breaker wiring branch 101 and the contact points of the first compensator 103 and the first multi-circuit breaker wiring branch 101 are closed; the circuit breaker between the contact of the first power transmission line 104 with the first multi-circuit breaker wiring branch 101 and the contact of the second bus bar 107 with the first multi-circuit breaker wiring branch 101 is disconnected; the circuit breaker between the contact of the first compensator 103 with the first multiple circuit breaker wiring branch 101 and the contact of the first bus 106 with the first multiple circuit breaker wiring branch 101 is opened. For example: when the first power transmission line 104 is compensated in series and the first bus 106 and the second bus 107 are both running normally, the breakers S4, S5, S6 on the second multi-breaker wiring branch 105 are all closed, and simultaneously, the breakers S1 and S3 on the first multi-breaker wiring branch 101 are opened and the breaker S2 is closed.
The direction from the first bus 106 to the second bus 107 of the contacts on the second multi-breaker wiring branch 102 is: a contact of the first bus bar 106 with the second multiple breaker wiring branch 102, a contact of the second power transmission line 105 with the second multiple breaker wiring branch 102, a contact of the first compensator 102 with the second multiple breaker wiring branch 102, and a contact of the second bus bar 107 with the second multiple breaker wiring branch 102, comprising:
when the second power transmission line 105 is subjected to series compensation and the first bus 106 and the second bus 107 are normal in operation, all the circuit breakers on the first multi-circuit breaker wiring branch circuit 101 are closed, and meanwhile, the circuit breakers between the contact points of the second power transmission line 105 and the second multi-circuit breaker wiring branch circuit 102 and the contact points of the first compensator 103 and the second multi-circuit breaker wiring branch circuit 102 are closed; the circuit breaker between the contact of the second transmission line 105 with the second multiple circuit breaker wiring branch 102 and the contact of the first bus 106 with the second multiple circuit breaker wiring branch 102 is disconnected; the contact between the first compensator 103 and the second multi-breaker wiring branch 102 and the contact between the second bus 107 and the second multi-breaker wiring branch 102 are opened, for example, when the second transmission line 105 is subjected to series compensation, and the first bus 106 and the second bus 107 are all operated normally, the breakers S1, S2 and S3 on the first multi-breaker wiring branch 101 are all closed, the breaker S5 on the second multi-breaker wiring branch 102 is closed, and the breakers S4 and S6 are all opened.
The direction from the first bus 106 to the second bus 107 of the contacts on the second multi-breaker wiring branch 102 is: a contact of the first bus bar 106 with the second multiple-breaker-wiring branch 102, a contact of the first compensator 103 with the second multiple-breaker-wiring branch 102, a contact of the second transmission line 105 with the second multiple-breaker-wiring branch 102, and a contact of the second bus bar 107 with the second multiple-breaker-wiring branch 102, include:
when the second power transmission line 105 is subjected to series compensation and the first bus 106 and the second bus 107 are normal in operation, all the circuit breakers on the first multi-circuit breaker wiring branch circuit 102 are closed, and meanwhile, the circuit breakers between the contact points of the second power transmission line 105 and the second multi-circuit breaker wiring branch circuit 102 and the contact points of the first compensator 103 and the second multi-circuit breaker wiring branch circuit 102 are closed; the circuit breaker between the contact of the second transmission line 105 with the second multiple circuit breaker wiring branch 102 and the contact of the second bus bar 107 with the second multiple circuit breaker wiring branch 102 is disconnected; the circuit breaker between the contact of the first compensator 103 with the second multiple circuit breaker wiring branch 102 and the contact of the first bus bar 106 with the second multiple circuit breaker wiring branch 102 is opened.
In the embodiment of the present invention, the directions from the first bus bar 106 to the second bus bar 107 of the contacts on the first multi-breaker wiring branch circuit 101 are as follows: the contact between the first bus 106 and the first multi-breaker wiring branch 101, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101, the contact between the first compensator 103 and the first multi-breaker wiring branch 101, and the contact between the second bus 107 and the first multi-breaker wiring branch 101 further include:
and when the first power transmission line 104 is subjected to series compensation and the first bus 106 or the second bus 107 is in fault, the circuit breakers closest to the fault bus on the first multi-circuit breaker wiring branch circuit 101 and the second multi-circuit breaker wiring branch circuit 102 are both opened. For example, the first compensator 103 performs series compensation on the first power transmission line 104, and when the first bus 106 fails, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101 and the circuit breaker S2 between the first compensator 103 and the contact of the first multi-breaker wiring branch 101 are closed; the other circuit breakers S1 and S3 of the first multiple circuit breaker wiring branch 101 are opened; the contacts of the second transmission line 105 with the second multiple breaker wiring branch 102 and the breakers S5 and S6 between the second bus bar 107 and the contacts of the second multiple breaker wiring branch 102 are closed; the other circuit breakers S4 of the second multiple circuit breaker wiring branch 102 are open. When the second bus 107 fails, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101 and the circuit breaker S2 between the first compensator 103 and the contact of the first multi-breaker wiring branch 101 are closed; the other circuit breakers S1 and S3 of the first multiple circuit breaker wiring branch 101 are opened; the contact of the second power transmission line 105 with the second multiple breaker wiring branch 102 and the breaker S4 between the first bus 106 and the contact of the second multiple breaker wiring branch 102 are closed; the other circuit breakers S5 and S6 of the second multiple circuit breaker wiring branch 102 are open.
The directions of the contacts on the first multi-breaker wiring branch circuit 101 from the first bus bar 106 to the second bus bar 107 are as follows: the contact between the first bus 106 and the first multi-breaker wiring branch 101, the contact between the first compensator 103 and the first multi-breaker wiring branch 101, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101, and the contact between the second bus 107 and the first multi-breaker wiring branch 101 further include:
and when the first power transmission line 104 is subjected to series compensation and the first bus 106 or the second bus 107 is in fault, the circuit breakers closest to the fault bus on the first multi-circuit breaker wiring branch circuit 101 and the second multi-circuit breaker wiring branch circuit 102 are both opened. For example, the first compensator 103 performs series compensation on the first power transmission line 104, and when the first bus 106 fails, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101 and the circuit breaker between the first compensator 103 and the contact between the first multi-breaker wiring branch 101 are closed; other circuit breakers of the first multiple circuit breaker wiring branch circuit 101 are opened; the circuit breakers between the contact of the second transmission line 105 with the second multiple circuit breaker wiring branch 102 and the contact of the second bus bar 107 with the second multiple circuit breaker wiring branch 102 are closed; the other circuit breakers of the second multiple circuit breaker wiring branch 102 are open. When the second bus 107 fails, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101 and the circuit breaker between the first compensator 103 and the contact of the first multi-breaker wiring branch 101 are closed; other circuit breakers of the first multiple circuit breaker wiring branch circuit 101 are opened; the circuit breakers between the contact of the second transmission line 105 with the second multiple circuit breaker wiring branch 102 and the contact of the first bus 106 with the second multiple circuit breaker wiring branch 102 are closed; the other circuit breakers of the second multiple circuit breaker wiring branch 102 are open.
The direction from the first bus 106 to the second bus 107 of the contacts on the second multi-breaker wiring branch 102 is: the contact between the first bus 106 and the second multi-breaker wiring branch 102, the contact between the second power transmission line 105 and the second multi-breaker wiring branch 102, the contact between the first compensator 103 and the second multi-breaker wiring branch 102, and the contact between the second bus 107 and the second multi-breaker wiring branch 102 further include:
when the first compensator 103 performs series compensation on the second power transmission line 105 and the first bus 106 or the second bus 107 fails, the second multi-breaker wiring branch 102 and the circuit breaker closest to the failed bus on the first multi-breaker wiring branch 101 are both opened. For example, the first compensator 103 performs series compensation on the second power transmission line 105, and when the first bus 106 fails, a contact between the second power transmission line 105 and the second multiple breaker wiring branch 102 and a breaker S5 between the first compensator 103 and the contact between the second multiple breaker wiring branch 102 are closed; the other circuit breakers S4 and S6 of the second multiple circuit breaker wiring branch 102 are open; the circuit breakers S2 and S3 between the contact of the first transmission line 104 with the first multiple circuit breaker wiring branch 101 and the contact of the second bus bar 107 with the first multiple circuit breaker wiring branch 101 are closed; the other circuit breakers S1 of the first multiple circuit breaker wiring branch 101 are open. When the second bus 107 fails, the contact between the second power transmission line 105 and the second multiple breaker wiring branch 102 and the circuit breaker S5 between the first compensator 103 and the contact of the second multiple breaker wiring branch 102 are closed; the other circuit breakers S4 and S6 of the second multiple circuit breaker wiring branch 102 are open; the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101 and the circuit breaker S1 between the first bus 106 and the contact of the first multi-breaker wiring branch 101 are closed; the other circuit breakers S5 and S6 of the first multiple circuit breaker wiring branch 102 are open.
The direction from the first bus 106 to the second bus 107 of the contacts on the second multi-breaker wiring branch 102 is: the contact between the first bus 106 and the second multi-breaker wiring branch 102, the contact between the first compensator 103 and the second multi-breaker wiring branch 102, the contact between the second power transmission line 105 and the second multi-breaker wiring branch 102, and the contact between the second bus 107 and the second multi-breaker wiring branch 102 further include:
when the first compensator 103 performs series compensation on the second power transmission line 105 and the first bus 106 or the second bus 107 fails, the second multi-breaker wiring branch 102 and the circuit breaker closest to the failed bus on the first multi-breaker wiring branch 101 are both opened. For example, the first compensator 103 performs series compensation on the second power transmission line 105, and when the first bus 106 fails, the contact between the second power transmission line 105 and the second multi-breaker wiring branch 102 and the circuit breaker between the first compensator 103 and the contact between the second multi-breaker wiring branch 102 are closed; the other circuit breakers of the second multiple circuit breaker wiring branch 102 are open; the circuit breakers between the contact of the first power transmission line 104 with the first multi-circuit breaker wiring branch 101 and the contact of the second bus bar 107 with the first multi-circuit breaker wiring branch 101 are closed; the other circuit breakers of the first multiple circuit breaker wiring branch 101 are open. When the second bus 107 fails, the contacts of the second power transmission line 105 and the second multiple breaker wiring branch 102 and the circuit breakers between the contacts of the first compensator 103 and the second multiple breaker wiring branch 102 are closed; the other circuit breakers of the second multiple circuit breaker wiring branch 102 are open; the circuit breakers between the contact of the first power transmission line 104 and the first multi-circuit breaker wiring branch 101 and the contact of the first bus 106 and the first multi-circuit breaker wiring branch 101 are closed; the other circuit breakers of the first multiple circuit breaker wiring branch 102 are open.
In the embodiment of the present invention, the directions from the first bus bar 106 to the second bus bar 107 of the contacts on the first multi-breaker wiring branch circuit 101 are as follows: the contact between the first bus 106 and the first multi-breaker wiring branch 101, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101, the contact between the first compensator 103 and the first multi-breaker wiring branch 101, and the contact between the second bus 107 and the first multi-breaker wiring branch 101 further include:
when the first compensator 103 fails or the first power transmission line 104 does not need series compensation, the contact of the first compensator 103 with the first multi-breaker wiring branch 101 and the circuit breaker between the first power transmission line 104 and the contact of the first multi-breaker wiring branch 101 are disconnected; the circuit breaker between the contact of the first compensator 103 with the first multi-circuit breaker wiring branch 101 and the contact of the second bus bar 107 with the first multi-circuit breaker wiring branch 101 is disconnected; the circuit breaker between the contact of the first transmission line 104 with the first multiple circuit breaker wiring branch 101 and the contact of the first bus 106 with the first multiple circuit breaker wiring branch 101 is closed. For example: when the first compensator 103 fails, the circuit breakers S2 and S3 on the first multi-circuit breaker wiring branch circuit 101 are opened, and the circuit breaker S1 is closed.
The directions of the contacts on the first multi-breaker wiring branch circuit 101 from the first bus bar 106 to the second bus bar 107 are as follows: the contact between the first bus 106 and the first multi-breaker wiring branch 101, the contact between the first compensator 103 and the first multi-breaker wiring branch 101, the contact between the first power transmission line 104 and the first multi-breaker wiring branch 101, and the contact between the second bus 107 and the first multi-breaker wiring branch 101 further include:
when the first compensator 103 fails or the first power transmission line 104 does not need series compensation, the contact of the first compensator 103 with the first multi-breaker wiring branch 101 and the circuit breaker between the first power transmission line 104 and the contact of the first multi-breaker wiring branch 101 are disconnected; the circuit breaker between the contact of the first compensator 103 and the first multi-circuit breaker wiring branch 101 and the contact of the first bus 106 and the first multi-circuit breaker wiring branch 101 is disconnected; the circuit breaker between the contact of the first power transmission line 104 and the first multi-circuit breaker wiring branch 101 and the contact of the second bus 107 and the first multi-circuit breaker wiring branch 101 is closed; for example: when the first compensator 103 fails, the circuit breakers S1 and S2 on the first multi-circuit breaker wiring branch circuit 101 are opened, and the circuit breaker S3 is closed.
The direction from the first bus 106 to the second bus 107 of the contacts on the second multi-breaker wiring branch 102 is: the contact between the first bus 106 and the second multi-breaker wiring branch 102, the contact between the second power transmission line 105 and the second multi-breaker wiring branch 102, the contact between the first compensator 103 and the second multi-breaker wiring branch 102, and the contact between the second bus 107 and the second multi-breaker wiring branch 102 further include:
when the first compensator 103 fails or the second power transmission line 105 does not need series compensation, the contact point of the first compensator 103 and the second multi-circuit breaker wiring branch 102 and the circuit breaker between the second power transmission line 105 and the contact point of the second multi-circuit breaker wiring branch 102 are disconnected; the circuit breaker between the contact of the first compensator 103 with the second multiple circuit breaker wiring branch 102 and the contact of the second bus bar 107 with the second multiple circuit breaker wiring branch 102 is disconnected; the circuit breaker between the contact of the second power transmission line 105 and the second multi-circuit breaker wiring branch 102 and the contact of the first bus 106 and the second multi-circuit breaker wiring branch 102 is closed; for example: when the first compensator 103 fails or the second transmission line 105 does not need series compensation, the circuit breakers S5 and S6 on the second multi-circuit breaker wiring branch 102 are opened, and the circuit breaker S4 is closed.
The direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first compensator 103 fails or the second power transmission line 105 does not need series compensation, the contact point of the first compensator 103 and the second multi-circuit breaker wiring branch 102 and the circuit breaker between the second power transmission line 105 and the contact point of the second multi-circuit breaker wiring branch 102 are disconnected; the circuit breaker between the contact of the first compensator 103 and the second multi-circuit breaker wiring branch 102 and the contact of the first bus 106 and the second multi-circuit breaker wiring branch 102 is disconnected; the circuit breaker between the contact of the second power transmission line 105 and the second multiple circuit breaker wiring branch 102 and the contact of the second bus bar 107 and the second multiple circuit breaker wiring branch 102 is closed; for example: when the first compensator 103 fails, the circuit breakers S4 and S5 on the second multi-circuit breaker wiring branch 102 are opened, and the circuit breaker S3 is closed. Therefore, the power failure phenomenon of the power transmission line can not be caused by the failure or active exit of elements on the device, and the reliability and the safety of the power transmission line are greatly improved.
In an embodiment of the present invention, the apparatus further includes: a series transformer T1, the first compensator 103 being connected to the first and second multi-breaker-wiring branches 101 and 102 through the series transformer T1; the series transformer T1 is connected to one side winding of the first compensator 103, and is connected to the first compensator 103 by a star-shaped or angle-shaped connection; the series transformer T1 is connected with one side winding of the power transmission line and is connected with the first multi-breaker wiring branch circuit 101 and the second multi-breaker wiring branch circuit 102 in a split-phase series connection mode.
The star connection mode refers to that one end of a three-phase power winding or a load is connected together to form a neutral line, and three phase lines are led out from the other end. The angle connection mode refers to that each phase of power supply or load is connected end to end in sequence, each connected point is led out to serve as three phase lines of three-phase power, and in the embodiment of the invention, the series transformer T1 is not limited to a double winding, but at least comprises a group of compensator side windings and line side windings.
FIG. 2 is a schematic diagram of a star connection for a side winding of a series transformer connected to a compensator according to an embodiment of the present invention; as shown in fig. 2, the specific star-shaped connection mode is that three phase lines led out from the first compensator 103 are grounded, and two other phase lines are respectively connected to the first multi-breaker connection branch circuit 101 and the second multi-breaker connection branch circuit 102. By controlling the circuit breakers on said first multi-breaker wiring branch 101 and/or said second multi-breaker wiring branch 102, a series compensation is made to the transmission line.
In an embodiment of the present invention, the apparatus further includes: and a bypass element, which is disposed on one side of the series transformer T1, where the side connects the first multi-breaker wiring branch circuit 101 and the second multi-breaker wiring branch circuit 102, and is used for performing bypass isolation on the first compensator 103 when the first compensator 103 fails.
In an embodiment of the present invention, the apparatus further includes: a second compensator 108, the second compensator 108 is connected in series with the first compensator 103, and an output end of the second compensator 108 is connected with a circuit breaker S7 to which a third bus 109 is connected.
Here, the second compensator 108 may also be an inverter, and may specifically be connected to the third bus 109 through a shunt transformer T2.
The device in the embodiment of the present invention may be further expanded to a multi-strip/multi-circuit line application scenario by combining, as shown in fig. 3, in which fig. 3 shows a wiring schematic diagram of a dual-strip dual-circuit line in the embodiment of the present invention, where two sets of wiring structures are connected between a first bus 106 and the second bus 107, and one set is the first multi-circuit breaker wiring branch 101, the second multi-circuit breaker wiring branch 102, the first compensator 103, the first power transmission line 104 and the second power transmission line 105; the other group is a first multi-breaker wiring branch circuit 101 ', a second multi-breaker wiring branch circuit 102 ', the first compensator 103 ', the first power transmission line 104 ', and the second power transmission line 105 ', and the two groups of wiring structures are similar to those in fig. 1 and 2, and the same points are not repeated, and reference may be made to the descriptions of fig. 1 and 2 above, except that the two groups of wiring structures may share a group of parallel transformer T2 and the second compensator 108, and the connection structure of the parallel transformer T2 and the second compensator 108 may be referred to the description of fig. 1 above. The connection structure shown in fig. 3 has the advantage that the first compensator 103 and the first compensator 103 ' can be respectively connected into two groups of double-circuit transmission lines 104, 104 ' and 105, 105 ' in a time-sharing manner, and can be switched in a live manner, so that the flexibility, reliability and safety of the FACTS connected into the power grid are improved, and the implementation manner is simple and flexible.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

Claims (24)

1. A wiring device, the device comprising: the system comprises a first multi-breaker wiring branch circuit formed by connecting at least three breakers in series, a second multi-breaker wiring branch circuit formed by connecting at least three breakers in series, a first compensator, a first power transmission line and a second power transmission line; wherein,
The first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit are respectively connected between a first bus and a second bus;
the first power transmission line is connected to the first multi-breaker wiring branch circuit; the second power transmission line is connected to the second multi-breaker wiring branch circuit;
the output end of the first compensator is respectively connected with the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit; at least one breaker is arranged between the output end of the first compensator and the contact of the first multi-breaker wiring branch, the contact of the first power transmission line and the first multi-breaker wiring branch and the contact of the first bus, the second bus and the first multi-breaker wiring branch; at least one breaker is arranged between the output end of the first compensator and the contact of the second multi-breaker wiring branch, the contact of the second power transmission line and the second multi-breaker wiring branch and the contact of the first bus and the contact of the second bus and the second multi-breaker wiring branch;
the first multiple breaker wiring branch and the second multiple breaker wiring branch are three-half breaker wiring branches formed by three breakers.
2. The apparatus of claim 1, wherein the first and second multiple breaker wiring branches are each formed of three circuit breakers in series; the direction of the contact point on the first multi-breaker wiring branch line from the first bus to the second bus is as follows: the contact point of the first bus and the first multi-breaker wiring branch, the contact point of the first transmission line and the first multi-breaker wiring branch, the contact point of the first compensator and the first multi-breaker wiring branch and the contact point of the second bus and the first multi-breaker wiring branch;
or a contact of the first bus with the first multi-breaker wiring branch, a contact of the first compensator with the first multi-breaker wiring branch, a contact of the first transmission line with the first multi-breaker wiring branch, and a contact of the second bus with the first multi-breaker wiring branch;
the direction of the contact point on the wiring branch of the second multi-circuit breaker from the first bus to the second bus is as follows: the contact point of the first bus and the second multi-breaker wiring branch, the contact point of the second transmission line and the second multi-breaker wiring branch, the contact point of the first compensator and the second multi-breaker wiring branch and the contact point of the second bus and the second multi-breaker wiring branch;
Or the contact point of the first bus and the second multi-breaker wiring branch, the contact point of the first compensator and the second multi-breaker wiring branch, the contact point of the second transmission line and the second multi-breaker wiring branch and the contact point of the second bus and the second multi-breaker wiring branch.
3. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar with the first multi-breaker wiring branch, the contact of the first transmission line with the first multi-breaker wiring branch, the contact of the first compensator with the first multi-breaker wiring branch, and the contact of the second busbar with the first multi-breaker wiring branch, include:
when the first bus and the second bus are normal in operation, all the circuit breakers on the wiring branches of the second multi-circuit breaker are closed, and meanwhile, the contact points of the first power transmission line and the wiring branches of the first multi-circuit breaker and the circuit breakers between the contact points of the first compensator and the wiring branches of the first multi-circuit breaker are closed; disconnecting the first transmission line from the contact of the first multi-breaker wiring branch and the breaker between the first bus and the contact of the first multi-breaker wiring branch; and the contact point of the first compensator and the first multi-breaker wiring branch circuit and the circuit breaker between the second bus and the contact point of the first multi-breaker wiring branch circuit are disconnected.
4. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar with the first multi-breaker wiring branch, the contact of the first compensator with the first multi-breaker wiring branch, the contact of the first transmission line with the first multi-breaker wiring branch, and the contact of the second busbar with the first multi-breaker wiring branch, include:
when the first bus and the second bus are normal in operation, all the circuit breakers on the wiring branches of the second multi-circuit breaker are closed, and meanwhile, the contact points of the first power transmission line and the wiring branches of the first multi-circuit breaker and the circuit breakers between the contact points of the first compensator and the wiring branches of the first multi-circuit breaker are closed; disconnecting the first transmission line from the contact of the first multi-breaker wiring branch and the breaker between the second bus and the contact of the first multi-breaker wiring branch; the first compensator is disconnected from the circuit breaker between the junction of the first multi-circuit breaker wiring branch and the junction of the first bus bar and the first multi-circuit breaker wiring branch.
5. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus with the second multiple breaker wiring branch, the contact of the second transmission line with the second multiple breaker wiring branch, the contact of the first compensator with the second multiple breaker wiring branch, and the contact of the second bus with the second multiple breaker wiring branch, include:
when the first bus and the second bus are normal in operation, all the circuit breakers on the first multi-circuit breaker wiring branch are closed, and meanwhile, the contact points of the second power transmission line and the second multi-circuit breaker wiring branch and the circuit breakers between the first compensator and the contact points of the second multi-circuit breaker wiring branch are closed; disconnecting the contact of the second power transmission line with the second multi-circuit breaker wiring branch and the circuit breaker between the first bus and the contact of the second multi-circuit breaker wiring branch; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
6. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus with the second multi-breaker wiring branch, the contact of the first compensator with the second multi-breaker wiring branch, the contact of the second transmission line with the second multi-breaker wiring branch, and the contact of the second bus with the second multi-breaker wiring branch, include:
when the first bus and the second bus are normal in operation, all the circuit breakers on the first multi-circuit breaker wiring branch are closed, and meanwhile, the contact points of the second power transmission line and the second multi-circuit breaker wiring branch and the circuit breakers between the first compensator and the contact points of the second multi-circuit breaker wiring branch are closed; disconnecting the contact of the second power transmission line with the second multi-circuit breaker wiring branch and the circuit breaker between the second bus and the contact of the second multi-circuit breaker wiring branch; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the first bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
7. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first bus fails, the connection point between the first power transmission line and the first multi-breaker wiring branch circuit and the circuit breaker between the first compensator and the connection point between the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the second bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
8. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first bus fails, the connection point between the first power transmission line and the first multi-breaker wiring branch circuit and the circuit breaker between the first compensator and the connection point between the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the second bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
9. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the second bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
10. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the second bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
11. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first power transmission line is compensated in series and the second bus fails, the contact point of the first power transmission line and the first multi-breaker wiring branch circuit and the circuit breaker between the contact point of the first compensator and the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the first bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
12. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
When the first power transmission line is subjected to series compensation and the second bus fails, the contact point of the first power transmission line and the first multi-breaker wiring branch circuit and the breaker between the first compensator and the contact point of the first multi-breaker wiring branch circuit are closed; other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all disconnected; the contacts of the first bus and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second power transmission line and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuits of the second plurality of circuit breakers are all opened.
13. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
When the second bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the first bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first power transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
14. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
When the second bus fails, the connection point between the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the connection point between the first compensator and the second multi-circuit breaker wiring branch circuit are closed; the other circuit breakers of the wiring branch circuit of the second multiple circuit breakers are all disconnected; the contacts of the first bus and the first multi-breaker wiring branch circuit and the circuit breakers between the first power transmission line and the contacts of the first multi-breaker wiring branch circuit are closed; and other circuit breakers of the wiring branch circuit of the first multiple circuit breakers are all opened.
15. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
When the first compensator fails, the contact point of the first compensator and the first multi-breaker wiring branch circuit and the breaker between the first power transmission line and the contact point of the first multi-breaker wiring branch circuit are disconnected; the contact of the first compensator with the first multi-breaker wiring branch and the circuit breaker between the second bus and the contact of the first multi-breaker wiring branch are disconnected; and the circuit breakers between the first transmission line and the contact of the first multi-circuit breaker wiring branch circuit and the contact of the first bus and the first multi-circuit breaker wiring branch circuit are closed.
16. The apparatus of claim 2, wherein the direction of the contacts on the first multi-circuit breaker wiring branch from the first bus bar to the second bus bar is, in order: the contact of the first busbar and the first multi-breaker wiring branch, the contact of the first compensator and the first multi-breaker wiring branch, the contact of the first transmission line and the first multi-breaker wiring branch, and the contact of the second busbar and the first multi-breaker wiring branch, further include:
when the first compensator fails, the contact point of the first compensator and the first multi-breaker wiring branch circuit and the breaker between the first power transmission line and the contact point of the first multi-breaker wiring branch circuit are disconnected; the contact of the first compensator and the first multi-breaker wiring branch and the breaker between the first bus and the contact of the first multi-breaker wiring branch are disconnected; and the circuit breakers between the joints of the first transmission line and the first multi-circuit breaker wiring branch circuit and the joints of the second bus and the first multi-circuit breaker wiring branch circuit are closed.
17. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
when the first compensator fails, the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second power transmission line and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected; the contacts of the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the first bus and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
18. The apparatus of claim 2, wherein the contacts on the second plurality of circuit breaker wiring branches are oriented in the following order from the first bus bar to the second bus bar: the contact of the first bus and the second multi-breaker wiring branch, the contact of the first compensator and the second multi-breaker wiring branch, the contact of the second transmission line and the second multi-breaker wiring branch, and the contact of the second bus and the second multi-breaker wiring branch, further include:
When the first compensator fails, the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the second power transmission line and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected; the contacts of the second power transmission line and the second multi-circuit breaker wiring branch circuit and the circuit breakers between the second bus bar and the contacts of the second multi-circuit breaker wiring branch circuit are closed; and the contact point of the first compensator and the second multi-circuit breaker wiring branch circuit and the circuit breaker between the first bus and the contact point of the second multi-circuit breaker wiring branch circuit are disconnected.
19. The apparatus of claim 1, wherein the apparatus further comprises: the first compensator is connected with the first multi-breaker wiring branch and the second multi-breaker wiring branch through the series transformer; wherein,
the series transformer is connected with one side winding of the first compensator and is connected with the first compensator in a star-shaped or angle-shaped wiring mode; the series transformer is connected with one side winding of the power transmission line and is connected with the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit in a split-phase series connection mode.
20. The apparatus of claim 19, wherein the apparatus further comprises: and the bypass element is arranged on one side of the series transformer, which is used for connecting the first multi-breaker wiring branch circuit and the second multi-breaker wiring branch circuit, and is used for performing bypass isolation on the first compensator when the first compensator fails.
21. The apparatus of claim 1, wherein the apparatus further comprises: a second compensator;
the second compensator is connected with the first compensator in series, and the output end of the second compensator is connected with a circuit breaker connected with a third bus.
22. The apparatus of claim 21, wherein the apparatus further comprises: and the second compensator is connected with a circuit breaker connected with the third bus through the parallel transformer.
23. The apparatus of claim 1, wherein the first compensator is an inverter.
24. The apparatus of claim 21, wherein the second compensator is an inverter.
CN201610829640.2A 2016-09-18 2016-09-18 Wiring device Active CN107846009B (en)

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