CN107846009A - A kind of termination - Google Patents

A kind of termination Download PDF

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Publication number
CN107846009A
CN107846009A CN201610829640.2A CN201610829640A CN107846009A CN 107846009 A CN107846009 A CN 107846009A CN 201610829640 A CN201610829640 A CN 201610829640A CN 107846009 A CN107846009 A CN 107846009A
Authority
CN
China
Prior art keywords
breaker
branch
junction
wiring branch
compensator
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.)
Granted
Application number
CN201610829640.2A
Other languages
Chinese (zh)
Other versions
CN107846009B (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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Filing date
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
Anticipated expiration legal-status Critical

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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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Distribution Board (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The invention discloses a kind of termination, including：The branch road of breaker connection more than first and the branch road of breaker connection more than second are connected between the first bus and the second bus；First transmission line of electricity is connected to breaker connection branch road more than first；Second transmission line of electricity connects breaker connection branch road more than second；First compensator is connected to the branch road of breaker connection more than first and breaker connection branch road more than second；There is at least one breaker between the contact of first compensator and the branch road of breaker connection more than first, the contact of the first transmission line of electricity and the branch road of breaker connection more than one and the first bus and the contact of the second bus and the branch road of breaker connection more than first；There is at least one breaker between the contact of first compensator and the branch road of breaker connection more than second, the contact of the second transmission line of electricity and the branch road of breaker connection more than second and the first bus and the contact of the second bus and the branch road of breaker connection more than second.

Description

Wiring device
Technical Field
The invention relates to a line wiring technology, in particular to a wiring device.
Background
The Flexible Alternating Current Transmission System (FACTS) includes a series compensation device, a parallel compensation device, and a comprehensive control device. The parallel compensation device can be directly connected to power grids of various grades, and the series compensation device and the comprehensive control device can be connected to the power grids only by connecting one end in series.
At present, a series transformer is connected in series into a power transmission line at the series compensation end of a series compensation device and a series compensation end of a comprehensive control device. In many applications, series compensation of different lines at different time periods may provide significant enhancement of power flow regulation. In the existing scheme, a plurality of power transmission lines are respectively connected with a series transformer, and the connected series transformers are switched and selected through the output end of a current converter. In such a way, one series transformer always runs in a bypass mode at any time, so that resource waste and cost increase are caused; when the access line is switched, the whole set of device needs to be completely powered off and then operated, and the converter cannot be switched without power failure. And when a bypass switch or a transformer on the serial side of any line has a problem, the transmission line must be accompanied and stopped, so that the accident is enlarged.
Disclosure of Invention
In order to solve the existing technical problems, embodiments of the present invention provide a wiring device, which can implement time-sharing series compensation and uninterrupted switching of multiple power 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 circuit breaker comprises a first multi-breaker wiring branch formed by connecting at least three circuit breakers in series, a second multi-breaker wiring branch formed by connecting at least three circuit breakers in series, a first compensator, a first power transmission line and a second power transmission line; wherein the first and second multi-breaker wiring branches are connected between the first and second busbars, respectively;
the first transmission line is connected to the first multi-breaker wiring branch; the second transmission line is connected to the second multi-breaker wiring branch;
the output end of the first compensator is respectively connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the first multi-circuit breaker connection branch circuit, between the first transmission line and the connection point of the first multi-circuit breaker connection branch circuit, and between the first bus and the connection point of the first multi-circuit breaker connection branch circuit and between the second bus and the connection point of the first multi-circuit breaker connection branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the second multi-circuit breaker connection branch, between the second transmission line and the connection point of the two multi-circuit breaker connection branches, and between the first bus and the connection point of the second multi-circuit breaker connection branch.
In the above scheme, the first and second multi-breaker connection branches are formed by connecting three breakers in series; wherein the direction of the contact points on the first multi-circuit breaker wiring branch from the first bus to the second bus is as follows: a junction of the first busbar and the first multi-breaker wiring branch, a junction of the first transmission line and the first multi-breaker wiring branch, a junction of the first compensator and the first multi-breaker wiring branch, and a junction of the second busbar and the first multi-breaker wiring branch;
or a junction of the first busbar and the first multi-breaker wiring branch, a junction of the first compensator and the first multi-breaker wiring branch, a junction of the first transmission line and the first multi-breaker wiring branch, and a junction of the second busbar and the first multi-breaker wiring branch;
the direction of the contact points on the second multi-circuit breaker wiring branch from the first bus to the second bus is as follows: a junction of the first busbar and the second multi-breaker wiring branch, a junction of the second transmission line and the second multi-breaker wiring branch, a junction of the first compensator and the second multi-breaker wiring branch, and a junction of the second busbar and the second multi-breaker wiring branch;
or a junction of the first bus and the second multi-breaker wiring branch, a junction of the first compensator and the second multi-breaker wiring branch, a junction of the second transmission line and the second multi-breaker wiring branch, and a junction of the second bus and the second multi-breaker wiring branch.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch, comprising:
performing series compensation on the first power transmission line, and when the first bus and the second bus both operate normally, closing all circuit breakers on the second multi-breaker wiring branch, and simultaneously closing circuit breakers between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; a circuit breaker between a contact of the first transmission line with the first multi-circuit breaker connection branch and a contact of the first bus with the first multi-circuit breaker connection branch is opened; the first compensator opens a circuit breaker between the junction of the first multi-breaker wiring branch and the junction of the second busbar and the first multi-breaker wiring branch.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch, comprising:
performing series compensation on the first power transmission line, and when the first bus and the second bus both operate normally, closing all circuit breakers on the second multi-breaker wiring branch, and simultaneously closing circuit breakers between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the circuit breakers between the first transmission line and the junction of the first multi-circuit breaker connection branch and the second busbar and the junction of the first multi-circuit breaker connection branch are disconnected; the first compensator opens a circuit breaker between the junction of the first compensator and the first multi-breaker wiring branch and the junction of the first busbar and the first multi-breaker wiring branch.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch, comprising:
performing series compensation on the second power transmission line, and when the first bus and the second bus both operate normally, all circuit breakers on the first multi-circuit breaker wiring branch are switched on, and meanwhile, circuit breakers between a contact of the second power transmission line and the second multi-circuit breaker wiring branch and a contact of the first compensator and the second multi-circuit breaker wiring branch are switched on; the circuit breaker between the junction of the second transmission line and the second multi-breaker wiring branch and the junction of the first busbar and the second multi-breaker wiring branch is disconnected; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the second busbar and the second multi-breaker wiring branch.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch, comprising:
performing series compensation on the second power transmission line, and when the first bus and the second bus both operate normally, all circuit breakers on the first multi-circuit breaker wiring branch are switched on, and meanwhile, circuit breakers between a contact of the second power transmission line and the second multi-circuit breaker wiring branch and a contact of the first compensator and the second multi-circuit breaker wiring branch are switched on; the circuit breaker between the second transmission line and the junction of the second multi-circuit breaker connection branch and the junction of the second bus and the second multi-circuit breaker connection branch is disconnected; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the first busbar and the second multi-breaker wiring branch.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
performing series compensation on the first power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
performing series compensation on the first power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
compensating the first transmission line in series, and when the second bus fails, closing a circuit breaker between a contact of the first transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
performing series compensation on the first power transmission line, and when the second bus fails, closing a circuit breaker between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the second bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the second bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
when the first compensator fails, the first compensator is disconnected from the circuit breaker between the connection point of the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch; a circuit breaker disconnect between the first compensator and the junction of the first multi-breaker wiring branch and the second busbar and the junction of the first multi-breaker wiring branch; and the circuit breakers between the connection point of the first transmission line and the first multi-circuit breaker connection branch and the connection point of the first bus and the first multi-circuit breaker connection branch are closed.
In the above solution, the directions of the contacts on the first multi-breaker connection branch from the first bus bar to the second bus bar are in turn: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
when the first compensator fails, the first compensator is disconnected from the circuit breaker between the connection point of the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch; a circuit breaker disconnect between the first compensator and the junction of the first multi-breaker wiring branch and the first busbar and the junction of the first multi-breaker wiring branch; and the circuit breakers between the connection point of the first power transmission line and the first multi-circuit breaker connection branch circuit and the connection point of the second bus and the first multi-circuit breaker connection branch circuit are closed.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
when the first compensator fails, the circuit breakers between the connection points of the first compensator and the second multi-circuit breaker connection branch and the connection points of the second transmission line and the second multi-circuit breaker connection branch are disconnected; the second transmission line is connected with a circuit breaker between a contact of the second multi-circuit breaker connection branch and a contact of the first bus and the second multi-circuit breaker connection branch; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the second busbar and the second multi-breaker wiring branch.
In the above solution, the directions of the contacts on the second multi-breaker connection branch from the first bus to the second bus are, in order: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
when the first compensator fails, the circuit breakers between the connection points of the first compensator and the second multi-circuit breaker connection branch and the connection points of the second transmission line and the second multi-circuit breaker connection branch are disconnected; the second transmission line is connected with a circuit breaker between a contact of the second multi-circuit breaker connection branch and a contact of the second bus and the second multi-circuit breaker connection branch; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the first busbar and the second multi-breaker wiring branch.
In the above scheme, the apparatus further comprises: a series transformer through which the first compensator is connected with the first and second multi-breaker wiring branches; wherein,
the series transformer is connected with a winding on one side of the first compensator and is connected with the first compensator in a star or angle connection mode; the series transformer is connected with a winding on one side of the power transmission line and is connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch in a split-phase series connection mode.
In the above scheme, the apparatus further comprises: and the bypass element is arranged on one side of the series transformer, which is connected with the first multi-circuit breaker connection branch and the second multi-circuit breaker connection branch, and is used for performing bypass isolation on the first compensator when the first compensator fails.
In the above scheme, 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.
In the above scheme, the apparatus further comprises: and the second compensator is connected with a circuit breaker connected with the third bus through the shunt transformer.
In the above scheme, the first compensator or the second compensator is a converter.
An embodiment of the present invention provides a wiring device, including: the circuit breaker comprises a first multi-breaker wiring branch formed by connecting at least three circuit breakers in series, a second multi-breaker wiring branch formed by connecting at least three circuit breakers in series, a first compensator, a first power transmission line and a second power transmission line; wherein the first and second multi-breaker wiring branches are connected between the first and second busbars, respectively; the first transmission line is connected to the first multi-breaker wiring branch; the second transmission line is connected to the second multi-breaker wiring branch; the output end of the first compensator is respectively connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the first multi-circuit breaker wiring branch, between the first transmission line and the connection point of the multi-circuit breaker wiring branch, and between the first bus and the connection point of the first multi-circuit breaker wiring branch and between the second bus and the connection point of the first multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the second multi-circuit breaker connection branch, between the second transmission line and the connection point of the two multi-circuit breaker connection branches, and between the first bus and the connection point of the second multi-circuit breaker connection branch. Therefore, the first compensator is connected with the two multi-circuit breaker branches, time-sharing series compensation of the compensator on the two lines is achieved, the device does not need to be powered off when the lines are switched, and flexibility, reliability and safety of a power grid are improved.
Drawings
FIG. 1 is a schematic structural diagram of a wiring device according to an embodiment of the present invention;
FIG. 2 is a star connection diagram of the windings on one side of the series transformer and the compensator according to the embodiment of the present invention;
fig. 3 is a schematic diagram of a wiring structure of a dual-loop dual-line circuit according to an embodiment of the invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
FIG. 1 is a schematic structural diagram of a wiring device according to an embodiment of the present invention; as shown in fig. 1, the apparatus includes: the circuit breaker comprises a first multi-breaker wiring branch 101 formed by connecting at least three circuit breakers in series, a second multi-breaker wiring branch 102 formed by connecting at least three circuit breakers in series, a first compensator 103, a first power transmission line 104 and a second power transmission line 105; wherein,
the first and second multi-breaker connection branches 101, 102 are connected between a first and second bus 106, 107, respectively;
the first transmission line 104 is connected to the first multi-breaker wiring branch 101; the second transmission line 105 is connected to the second multiple breaker connection leg 102;
the output of the first compensator 103 is connected to the first and second multi-breaker connection branches 101 and 102, respectively; at least one circuit breaker is arranged between the output end of the first compensator 103 and the connection point of the first multi-breaker wiring branch 101, between the first transmission line 104 and the connection point of the first multi-breaker wiring branch 101, and between the first bus 106 and the connection point of the first multi-breaker wiring branch 101 and between the second bus 107 and the connection point of the first multi-breaker wiring branch 101;
at least one circuit breaker is arranged between the connection point of the output end of the first compensator 103 and the second multi-breaker connection branch 102, the connection point of the second transmission line 105 and the second multi-breaker connection branch 102, and the connection points of the first bus 106, the second bus 107 and the second multi-breaker connection branch 102.
Here, the first compensator 103 may be an inverter, and the first and second multi-breaker connection branches 101 and 102 may each be a three-half breaker connection branch formed of three breakers; wherein, the directions of the contacts on the first multi-breaker wiring branch 101 from the first bus bar 106 to the second bus bar 107 are as follows: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, and the junction of the second busbar 107 with the first multi-breaker wiring branch 101; or the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101 and the junction of the second busbar 107 with the first multi-breaker wiring branch 101;
the direction from the first busbar 106 to the second busbar 107 of the contacts on the second multi-breaker connection branch 102 is as follows: the junction of the first busbar 106 with the second multi-breaker wiring branch 102, the junction of the second transmission line 105 with the second multi-breaker wiring branch 102, the junction of the first compensator 103 with the second multi-breaker wiring branch 102, and the junction of the second busbar 107 with the second multi-breaker wiring branch 102; or the junction of the first busbar 106 with the second multi-breaker connection leg 102, the junction of the first compensator 103 with the second multi-breaker connection leg 102, the junction of the second transmission line 105 with the second multi-breaker connection leg 102 and the junction of the second busbar 107 with the second multi-breaker connection leg 102.
Here, the direction of the contacts on the first multiple breaker connection branch 101 from the first busbar 106 to the second busbar 107 is, in order: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101 and the junction of the second busbar 107 with the first multi-breaker wiring branch 101, comprising:
when the first transmission line 104 is compensated in series and the first bus 106 and the second bus 107 both operate normally, all circuit breakers on the second multi-breaker connection branch 105 are closed, and simultaneously, circuit breakers between a contact of the first transmission line 104 and the first multi-breaker connection branch 101 and a contact of the first compensator 103 and the first multi-breaker connection branch 101 are closed; the circuit breaker between the junction of the first transmission line 104 and the first multi-breaker wiring branch 101 and the junction of the first busbar 106 and the first multi-breaker wiring branch 101 is open; the circuit breakers between the contacts of the first compensator 103 and the first multi-breaker wiring branch 101 and the contacts of the second busbar 107 and the first multi-breaker wiring branch 101 are opened. For example, when the first power transmission line 104 is compensated in series and both the first bus 106 and the second bus 107 are operating normally, the circuit breakers S4, S5 and S6 of the second multi-breaker connection branch 105 are all closed, and at the same time, the circuit breakers S1 and S3 of the first multi-breaker connection branch 101 are opened and the circuit breaker S2 is closed.
The direction of the contact points on the first multi-breaker connection branch 101 from the first bus bar 106 to the second bus bar 107 is as follows: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, and the junction of the second busbar 107 with the first multi-breaker wiring branch 101, comprising:
when the first transmission line 104 is compensated in series and the first bus 106 and the second bus 107 both operate normally, all circuit breakers on the second multi-breaker connection branch 105 are closed, and simultaneously, circuit breakers between a contact of the first transmission line 104 and the first multi-breaker connection branch 101 and a contact of the first compensator 103 and the first multi-breaker connection branch 101 are closed; the circuit breakers between the contacts of the first transmission line 104 and the first multi-breaker wiring branch 101 and the contacts of the second busbar 107 and the first multi-breaker wiring branch 101 are opened; the circuit breaker between the junction of the first compensator 103 with the first multi-breaker wiring branch 101 and the junction of the first busbar 106 with the first multi-breaker wiring branch 101 is opened. For example: when the first transmission line 104 is compensated in series and the first bus 106 and the second bus 107 both operate normally, the circuit breakers S4, S5, S6 on the second multi-breaker connection branch 105 are all closed, and at the same time, the circuit breakers S1 and S3 on the first multi-breaker connection branch 101 are opened and the circuit breaker S2 is closed.
The direction from the first busbar 106 to the second busbar 107 of the contacts on the second multi-breaker connection branch 102 is as follows: the junction of the first busbar 106 with the second multi-breaker connection leg 102, the junction of the second transmission line 105 with the second multi-breaker connection leg 102, the junction of the first compensator 102 with the second multi-breaker connection leg 102 and the junction of the second busbar 107 with the second multi-breaker connection leg 102, comprising:
when the second transmission line 105 is compensated in series and the first bus 106 and the second bus 107 both operate normally, all circuit breakers on the first multi-breaker connection branch 101 are closed, and simultaneously, circuit breakers between a contact of the second transmission line 105 and the second multi-breaker connection branch 102 and a contact of the first compensator 103 and the second multi-breaker connection branch 102 are closed; the circuit breaker between the junction of the second transmission line 105 with the second multi-breaker wiring branch 102 and the junction of the first busbar 106 with the second multi-breaker wiring branch 102 is open; when the first compensator 103 is disconnected from the contacts of the second multi-breaker connection branch 102 and the second bus 107 is disconnected from the contacts of the second multi-breaker connection branch 102, for example, when the second transmission line 105 is compensated in series and the first bus 106 and the second bus 107 both operate normally, the circuit breakers S1, S2 and S3 on the first multi-breaker connection branch 101 are all closed, the circuit breaker S5 on the second multi-breaker connection branch 102 is closed, and the circuit breakers S4 and S6 are all opened.
The direction from the first busbar 106 to the second busbar 107 of the contacts on the second multi-breaker connection branch 102 is as follows: the junction of the first busbar 106 with the second multi-breaker connection leg 102, the junction of the first compensator 103 with the second multi-breaker connection leg 102, the junction of the second transmission line 105 with the second multi-breaker connection leg 102, and the junction of the second busbar 107 with the second multi-breaker connection leg 102, comprising:
when the second transmission line 105 is compensated in series and the first bus 106 and the second bus 107 both operate normally, all circuit breakers on the first multi-breaker connection branch 102 are closed, and simultaneously, circuit breakers between a contact of the second transmission line 105 and the second multi-breaker connection branch 102 and a contact of the first compensator 103 and the second multi-breaker connection branch 102 are closed; the circuit breaker between the junction of the second transmission line 105 with the second multi-breaker wiring branch 102 and the junction of the second busbar 107 with the second multi-breaker wiring branch 102 is open; the circuit breaker between the junction of the first compensator 103 with the second multi-breaker wiring branch 102 and the junction of the first busbar 106 with the second multi-breaker wiring branch 102 is open.
In the embodiment of the present invention, the directions of the contacts on the first multi-breaker wiring branch 101 from the first bus bar 106 to the second bus bar 107 are as follows: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, and the junction of the second busbar 107 with the first multi-breaker wiring branch 101 further comprise:
when the first transmission line 104 is compensated in series and the first bus 106 or the second bus 107 has a fault, the circuit breakers closest to the fault bus on the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102 are both opened. For example, when the first compensator 103 compensates the first transmission line 104 in series and the first busbar 106 fails, the first transmission line 104 is closed with the contact of the first multi-breaker wiring branch 101 and the breaker S2 between the first compensator 103 and the contact of the first multi-breaker wiring branch 101; the other breakers S1 and S3 of the first multi-breaker wiring branch 101 are open; the contacts of the second transmission line 105 with the second multi-breaker wiring branch 102 and the breakers S5 and S6 between the second busbar 107 and the contacts of the second multi-breaker wiring branch 102 are closed; the other circuit breaker S4 of the second multi-breaker wiring branch 102 opens. When the second busbar 107 fails, the first transmission line 104 closes with the circuit breaker S2 between the junction of the first multi-breaker wiring branch 101 and the junction of the first compensator 103 and the first multi-breaker wiring branch 101; the other breakers S1 and S3 of the first multi-breaker wiring branch 101 are open; the connection of the second transmission line 105 to the second multi-breaker wiring branch 102 and the breaker S4 between the first busbar 106 and the connection of the second multi-breaker wiring branch 102 are closed; the other breakers S5 and S6 of the second multi-breaker wiring branch 102 are opened.
The direction of the contact points on the first multi-breaker connection branch 101 from the first bus bar 106 to the second bus bar 107 is as follows: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, and the junction of the second busbar 107 with the first multi-breaker wiring branch 101 further comprise:
when the first transmission line 104 is compensated in series and the first bus 106 or the second bus 107 has a fault, the circuit breakers closest to the fault bus on the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102 are both opened. For example, when the first compensator 103 performs series compensation on the first transmission line 104 and the first bus 106 fails, a circuit breaker between a contact of the first transmission line 104 and the first multi-breaker wiring branch 101 and a contact of the first compensator 103 and the first multi-breaker wiring branch 101 is closed; the other circuit breakers of the first multi-breaker wiring branch 101 open; the second transmission line 105 is closed with a circuit breaker between the junction of the second multi-breaker wiring branch 102 and the junction of the second busbar 107 and the second multi-breaker wiring branch 102; the other circuit breakers of the second multi-breaker wiring branch 102 open. When the second busbar 107 fails, the first transmission line 104 closes with a circuit breaker between the junction of the first multi-breaker wiring branch 101 and the junction of the first compensator 103 and the first multi-breaker wiring branch 101; the other circuit breakers of the first multi-breaker wiring branch 101 open; the second transmission line 105 is closed with a circuit breaker between the junction of the second multi-breaker wiring branch 102 and the junction of the first busbar 106 and the second multi-breaker wiring branch 102; the other circuit breakers of the second multi-breaker wiring branch 102 open.
The direction from the first busbar 106 to the second busbar 107 of the contacts on the second multi-breaker connection branch 102 is as follows: the junction of the first busbar 106 with the second multi-breaker connection leg 102, the junction of the second transmission line 105 with the second multi-breaker connection leg 102, the junction of the first compensator 103 with the second multi-breaker connection leg 102, and the junction of the second busbar 107 with the second multi-breaker connection leg 102 further comprise:
when the first compensator 103 performs series compensation on the second transmission line 105 and the first bus 106 or the second bus 107 fails, the circuit breakers closest to the failed bus on the second multi-breaker wiring branch 102 and the first multi-breaker wiring branch 101 are both opened. For example, when the first compensator 103 compensates the second transmission line 105 in series and the first busbar 106 fails, the second transmission line 105 is closed with the circuit breaker S5 between the contact of the second multi-breaker connection branch 102 and the contact of the first compensator 103 and the second multi-breaker connection branch 102; the other breakers S4 and S6 of the second multi-breaker wiring branch 102 are open; the contacts of the first transmission line 104 with the first multi-breaker wiring branch 101 and the breakers S2 and S3 between the second busbar 107 and the contacts of the first multi-breaker wiring branch 101 are closed; the other circuit breaker S1 of the first multi-breaker wiring branch 101 opens. When the second busbar 107 fails, the second transmission line 105 closes with the circuit breaker S5 between the junction of the second multi-breaker wiring branch 102 and the junction of the first compensator 103 and the second multi-breaker wiring branch 102; the other breakers S4 and S6 of the second multi-breaker wiring branch 102 are open; the connection of the first transmission line 104 to the first multi-breaker wiring branch 101 and the breaker S1 between the first busbar 106 and the connection of the first multi-breaker wiring branch 101 are closed; the other breakers S5 and S6 of the first multi-breaker wiring branch 102 open.
The direction from the first busbar 106 to the second busbar 107 of the contacts on the second multi-breaker connection branch 102 is as follows: the junction of the first busbar 106 with the second multi-breaker connection leg 102, the junction of the first compensator 103 with the second multi-breaker connection leg 102, the junction of the second transmission line 105 with the second multi-breaker connection leg 102, and the junction of the second busbar 107 with the second multi-breaker connection leg 102 further comprise:
when the first compensator 103 performs series compensation on the second transmission line 105 and the first bus 106 or the second bus 107 fails, the circuit breakers closest to the failed bus on the second multi-breaker wiring branch 102 and the first multi-breaker wiring branch 101 are both opened. For example, when the first compensator 103 performs series compensation on the second transmission line 105 and the first bus 106 fails, a circuit breaker between a contact of the second transmission line 105 and the second multi-breaker wiring branch 102 and a contact of the first compensator 103 and the second multi-breaker wiring branch 102 is closed; the other circuit breakers of the second multi-breaker wiring branch 102 open; the first transmission line 104 is closed with a circuit breaker between the junction of the first multi-breaker wiring branch 101 and the junction of the second busbar 107 and the first multi-breaker wiring branch 101; the other circuit breakers of the first multi-breaker wiring branch 101 open. When the second busbar 107 fails, the second transmission line 105 closes with a circuit breaker between the junction of the second multi-breaker wiring branch 102 and the junction of the first compensator 103 and the second multi-breaker wiring branch 102; the other circuit breakers of the second multi-breaker wiring branch 102 open; the first transmission line 104 is closed with a circuit breaker between the junction of the first multi-breaker wiring branch 101 and the junction of the first busbar 106 and the first multi-breaker wiring branch 101; the other circuit breakers of the first multi-breaker wiring branch 102 open.
In the embodiment of the present invention, the directions of the contacts on the first multi-breaker wiring branch 101 from the first bus bar 106 to the second bus bar 107 are as follows: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, and the junction of the second busbar 107 with the first multi-breaker wiring branch 101 further comprise:
when the first compensator 103 fails or the first transmission line 104 does not require series compensation, the first compensator 103 opens a circuit breaker between the contact of the first multi-breaker wiring branch 101 and the contact of the first transmission line 104 and the first multi-breaker wiring branch 101; the circuit breakers between the contacts of the first compensator 103 and the first multi-breaker wiring branch 101 and the contacts of the second busbar 107 and the first multi-breaker wiring branch 101 are opened; the first transmission line 104 is closed with a circuit breaker between the junction of the first multi-breaker wiring branch 101 and the junction of the first busbar 106 and the first multi-breaker wiring branch 101. For example: when the first compensator 103 fails, the breakers S2 and S3 on the first multiple breaker connection branch 101 are opened and the breaker S1 is closed.
The direction of the contact points on the first multi-breaker connection branch 101 from the first bus bar 106 to the second bus bar 107 is as follows: the junction of the first busbar 106 with the first multi-breaker wiring branch 101, the junction of the first compensator 103 with the first multi-breaker wiring branch 101, the junction of the first transmission line 104 with the first multi-breaker wiring branch 101, and the junction of the second busbar 107 with the first multi-breaker wiring branch 101 further comprise:
when the first compensator 103 fails or the first transmission line 104 does not require series compensation, the first compensator 103 opens a circuit breaker between the contact of the first multi-breaker wiring branch 101 and the contact of the first transmission line 104 and the first multi-breaker wiring branch 101; the circuit breaker between the junction of the first compensator 103 and the first multi-breaker wiring branch 101 and the junction of the first busbar 106 and the first multi-breaker wiring branch 101 is open; the connection point of the first transmission line 104 to the first multi-breaker wiring branch 101 is closed with a breaker between the second busbar 107 and the connection point of the first multi-breaker wiring branch 101; for example: when the first compensator 103 fails, the breakers S1 and S2 on the first multiple breaker connection branch 101 are opened and the breaker S3 is closed.
The direction from the first busbar 106 to the second busbar 107 of the contacts on the second multi-breaker connection branch 102 is as follows: the junction of the first busbar 106 with the second multi-breaker connection leg 102, the junction of the second transmission line 105 with the second multi-breaker connection leg 102, the junction of the first compensator 103 with the second multi-breaker connection leg 102, and the junction of the second busbar 107 with the second multi-breaker connection leg 102 further comprise:
when the first compensator 103 fails or the second transmission line 105 does not need series compensation, the circuit breaker between the contact of the first compensator 103 and the second multi-breaker wiring branch 102 and the contact of the second transmission line 105 and the second multi-breaker wiring branch 102 is opened; the circuit breaker between the junction of the first compensator 103 with the second multi-breaker wiring branch 102 and the junction of the second busbar 107 with the second multi-breaker wiring branch 102 is open; the junction of the second transmission line 105 with the second multi-breaker wiring branch 102 is closed with a breaker between the first busbar 106 and the junction of the second multi-breaker wiring branch 102; 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-breaker wiring branch 102 are opened and the circuit breaker S4 is closed.
The direction of the contact points on the second multi-circuit breaker wiring branch from the first bus to the second bus is as follows: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
when the first compensator 103 fails or the second transmission line 105 does not need series compensation, the circuit breaker between the contact of the first compensator 103 and the second multi-breaker wiring branch 102 and the contact of the second transmission line 105 and the second multi-breaker wiring branch 102 is opened; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the first busbar 106 and the second multi-breaker wiring branch 102 is open; the connection point of the second transmission line 105 with the second multi-breaker wiring branch 102 is closed with a breaker between the second busbar 107 and the connection point of the second multi-breaker wiring branch 102; for example: when the first compensator 103 fails, the breakers S4 and S5 on the second multi-breaker wiring branch 102 are opened and breaker S3 is closed. Therefore, the power failure phenomenon of the power transmission line caused by the element failure or active exit on the device can be avoided, 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, 102 through the series transformer T1; the series transformer T1 is connected to a side winding of the first compensator 103, and is connected to the first compensator 103 by a star or delta connection; the series transformer T1 is connected with a winding on one side of the transmission line and is connected with the first multi-breaker wiring branch 101 and the second multi-breaker wiring branch 102 in a split-phase series connection mode.
Here, the star connection method is a method in which 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 type connection mode is that all phase power supplies or loads are sequentially connected end to end, and 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 set of compensator side winding and line side winding.
FIG. 2 is a star connection diagram of the windings on one side of the series transformer and the compensator according to the embodiment of the present invention; the specific star-shaped connection mode is as shown in fig. 2, and one of three phase lines led out from the first compensator 103 is grounded, and the other two phase lines are respectively connected to the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102. Series compensation to the transmission line is performed by controlling the circuit breakers on the first multi-breaker wiring branch 101 and/or the second multi-breaker wiring branch 102.
In an embodiment of the present invention, the apparatus further includes: and a bypass element provided on a side of the series transformer T1 where the first and second multi-breaker connection branches 101 and 102 are connected, for bypassing 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, wherein the second compensator 108 is connected in series with the first compensator 103, and the output end of the second compensator 108 is connected with a breaker S7 connected with a third bus 109.
Here, the second compensator 108 may also be an inverter, and may be connected to the third bus 109 through a shunt transformer T2.
The device in the embodiment of the present invention may also be expanded to a multi-circuit/multi-circuit line application scenario through combination, specifically as shown in fig. 3, fig. 3 shows a connection schematic diagram of a dual-circuit line in the embodiment of the present invention, wherein two groups of connection structures are connected between a first bus 106 and a second bus 107, where one group is the first multi-circuit breaker connection branch 101, the second multi-circuit breaker connection 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 connection branch 101 ', a second multi-breaker connection branch 102 ', the first compensator 103 ', the first transmission line 104 ', and the second transmission line 105 ', and the two groups of connection structures are similar to the structures in fig. 1 and fig. 2, and the same description is omitted, and reference may be made to the description of fig. 1 and fig. 2, except that the two groups of connection structures may share one group of shunt transformer T2 and second compensator 108, and the connection structure of shunt transformer T2 and second compensator 108 may be referred to the description of fig. 1. The advantage of the connection structure shown in fig. 3 is that the first compensator 103 and the first compensator 103 ' can be respectively connected to the two sets of dual-circuit transmission lines 104, 104 ' and 105, 105 ' in a time-sharing manner, and can be switched with power, so that the flexibility, reliability and safety of connecting the FACTS to the power grid are improved, and the implementation manner is simple and flexible.
As will be appreciated by one skilled in the art, 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, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (23)

1. A wiring device, comprising: the circuit breaker comprises a first multi-breaker wiring branch formed by connecting at least three circuit breakers in series, a second multi-breaker wiring branch formed by connecting at least three circuit breakers in series, a first compensator, a first power transmission line and a second power transmission line; wherein,
the first multi-breaker wiring branch and the second multi-breaker wiring branch are respectively connected between the first bus and the second bus;
the first transmission line is connected to the first multi-breaker wiring branch; the second transmission line is connected to the second multi-breaker wiring branch;
the output end of the first compensator is respectively connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the first multi-circuit breaker connection branch circuit, between the first transmission line and the connection point of the first multi-circuit breaker connection branch circuit, and between the first bus and the connection point of the first multi-circuit breaker connection branch circuit and between the second bus and the connection point of the first multi-circuit breaker connection branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the second multi-circuit breaker connection branch, between the second transmission line and the connection point of the two multi-circuit breaker connection branches, and between the first bus and the connection point of the second multi-circuit breaker connection branch.
2. The device according to claim 1, characterized in that said first and second multi-breaker connection branches are each formed by three circuit breakers connected in series; wherein the direction of the contact points on the first multi-circuit breaker wiring branch from the first bus to the second bus is as follows: a junction of the first busbar and the first multi-breaker wiring branch, a junction of the first transmission line and the first multi-breaker wiring branch, a junction of the first compensator and the first multi-breaker wiring branch, and a junction of the second busbar and the first multi-breaker wiring branch;
or a junction of the first busbar and the first multi-breaker wiring branch, a junction of the first compensator and the first multi-breaker wiring branch, a junction of the first transmission line and the first multi-breaker wiring branch, and a junction of the second busbar and the first multi-breaker wiring branch;
the direction of the contact points on the second multi-circuit breaker wiring branch from the first bus to the second bus is as follows: a junction of the first busbar and the second multi-breaker wiring branch, a junction of the second transmission line and the second multi-breaker wiring branch, a junction of the first compensator and the second multi-breaker wiring branch, and a junction of the second busbar and the second multi-breaker wiring branch;
or a junction of the first bus and the second multi-breaker wiring branch, a junction of the first compensator and the second multi-breaker wiring branch, a junction of the second transmission line and the second multi-breaker wiring branch, and a junction of the second bus and the second multi-breaker wiring branch.
3. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch, comprising:
performing series compensation on the first power transmission line, and when the first bus and the second bus both operate normally, closing all circuit breakers on the second multi-breaker wiring branch, and simultaneously closing circuit breakers between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; a circuit breaker between a contact of the first transmission line with the first multi-circuit breaker connection branch and a contact of the first bus with the first multi-circuit breaker connection branch is opened; the first compensator opens a circuit breaker between the junction of the first multi-breaker wiring branch and the junction of the second busbar and the first multi-breaker wiring branch.
4. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch, comprising:
performing series compensation on the first power transmission line, and when the first bus and the second bus both operate normally, closing all circuit breakers on the second multi-breaker wiring branch, and simultaneously closing circuit breakers between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the circuit breakers between the first transmission line and the junction of the first multi-circuit breaker connection branch and the second busbar and the junction of the first multi-circuit breaker connection branch are disconnected; the first compensator opens a circuit breaker between the junction of the first compensator and the first multi-breaker wiring branch and the junction of the first busbar and the first multi-breaker wiring branch.
5. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch, comprising:
performing series compensation on the second power transmission line, and when the first bus and the second bus both operate normally, all circuit breakers on the first multi-circuit breaker wiring branch are switched on, and meanwhile, circuit breakers between a contact of the second power transmission line and the second multi-circuit breaker wiring branch and a contact of the first compensator and the second multi-circuit breaker wiring branch are switched on; the circuit breaker between the junction of the second transmission line and the second multi-breaker wiring branch and the junction of the first busbar and the second multi-breaker wiring branch is disconnected; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the second busbar and the second multi-breaker wiring branch.
6. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch, comprising:
performing series compensation on the second power transmission line, and when the first bus and the second bus both operate normally, all circuit breakers on the first multi-circuit breaker wiring branch are switched on, and meanwhile, circuit breakers between a contact of the second power transmission line and the second multi-circuit breaker wiring branch and a contact of the first compensator and the second multi-circuit breaker wiring branch are switched on; the circuit breaker between the second transmission line and the junction of the second multi-circuit breaker connection branch and the junction of the second bus and the second multi-circuit breaker connection branch is disconnected; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the first busbar and the second multi-breaker wiring branch.
7. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
performing series compensation on the first power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
8. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
performing series compensation on the first power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
9. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
10. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the first bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the second bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
11. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
compensating the first transmission line in series, and when the second bus fails, closing a circuit breaker between a contact of the first transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
12. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
performing series compensation on the first power transmission line, and when the second bus fails, closing a circuit breaker between a contact of the first power transmission line and the first multi-breaker wiring branch and a contact of the first compensator and the first multi-breaker wiring branch; the other circuit breakers of the first multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the second multi-circuit breaker connection branch and the connection point of the second transmission line and the second multi-circuit breaker connection branch are both closed; the other circuit breakers of the second multi-breaker connection branch are all open.
13. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the second bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
14. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
performing series compensation on the second power transmission line, and when the second bus fails, closing a circuit breaker between a contact of the second power transmission line and the second multi-breaker wiring branch and a contact of the first compensator and the second multi-breaker wiring branch; the other circuit breakers of the second multi-circuit breaker connection branch are all opened; the circuit breakers between the connection point of the first bus and the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch are both closed; the other circuit breakers of the first multi-breaker wiring branch are all open.
15. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
when the first compensator fails, the first compensator is disconnected from the circuit breaker between the connection point of the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch; a circuit breaker disconnect between the first compensator and the junction of the first multi-breaker wiring branch and the second busbar and the junction of the first multi-breaker wiring branch; and the circuit breakers between the connection point of the first transmission line and the first multi-circuit breaker connection branch and the connection point of the first bus and the first multi-circuit breaker connection branch are closed.
16. The device of claim 2, wherein the contacts on the first multi-breaker wiring branch are, in order from the first busbar to the second busbar: the junction of the first busbar and the first multi-breaker wiring branch, the junction of the first compensator and the first multi-breaker wiring branch, the junction of the first transmission line and the first multi-breaker wiring branch, and the junction of the second busbar and the first multi-breaker wiring branch further comprise:
when the first compensator fails, the first compensator is disconnected from the circuit breaker between the connection point of the first multi-circuit breaker connection branch and the connection point of the first transmission line and the first multi-circuit breaker connection branch; a circuit breaker disconnect between the first compensator and the junction of the first multi-breaker wiring branch and the first busbar and the junction of the first multi-breaker wiring branch; and the circuit breakers between the connection point of the first power transmission line and the first multi-circuit breaker connection branch circuit and the connection point of the second bus and the first multi-circuit breaker connection branch circuit are closed.
17. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
when the first compensator fails, the circuit breakers between the connection points of the first compensator and the second multi-circuit breaker connection branch and the connection points of the second transmission line and the second multi-circuit breaker connection branch are disconnected; the second transmission line is connected with a circuit breaker between a contact of the second multi-circuit breaker connection branch and a contact of the first bus and the second multi-circuit breaker connection branch; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the second busbar and the second multi-breaker wiring branch.
18. A device according to claim 2, wherein the contacts on the second multiple breaker connection limb are in the order of: the junction of the first busbar and the second multi-breaker wiring branch, the junction of the first compensator and the second multi-breaker wiring branch, the junction of the second transmission line and the second multi-breaker wiring branch, and the junction of the second busbar and the second multi-breaker wiring branch further comprise:
when the first compensator fails, the circuit breakers between the connection points of the first compensator and the second multi-circuit breaker connection branch and the connection points of the second transmission line and the second multi-circuit breaker connection branch are disconnected; the second transmission line is connected with a circuit breaker between a contact of the second multi-circuit breaker connection branch and a contact of the second bus and the second multi-circuit breaker connection branch; the first compensator opens a circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the first busbar and the second multi-breaker wiring branch.
19. The apparatus of claim 1-further comprising: a series transformer through which the first compensator is connected with the first and second multi-breaker wiring branches; wherein,
the series transformer is connected with a winding on one side of the first compensator and is connected with the first compensator in a star or angle connection mode; the series transformer is connected with a winding on one side of the power transmission line and is connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch in a split-phase series connection mode.
20. The apparatus of claim 19, further comprising: and the bypass element is arranged on one side of the series transformer, which is connected with the first multi-circuit breaker connection branch and the second multi-circuit breaker connection branch, and is used for performing bypass isolation on the first compensator when the first compensator fails.
21. The apparatus of claim 1, further comprising: 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, further comprising: and the second compensator is connected with a circuit breaker connected with the third bus through the shunt transformer.
23. The apparatus of claim 1 or 21, wherein the first compensator or the second compensator is an inverter.
CN201610829640.2A 2016-09-18 2016-09-18 Wiring device Active CN107846009B (en)

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