CN107846009B - Wiring device - Google Patents

Abstract

The invention discloses a wiring device, comprising: a first multi-breaker wiring branch and a second multi-breaker wiring branch connected between the first bus bar and the second bus bar; a first power transmission line connected to the first multi-breaker circuit The second transmission line is connected to the second multi-circuit breaker connection branch; the first compensator is connected to the first multi-circuit breaker connection branch and the second multi-circuit breaker connection branch; the first compensator and the first multi-circuit breaker connection branch There is at least one circuit breaker between the contact point of the multi-breaker branch circuit, the contact point between the first power transmission line and a multi-breaker branch circuit, and the first bus bar and the contact point between the second bus bar and the first multi-breaker branch circuit; The connection point between the first compensator and the second multi-circuit breaker connection branch, the connection point between the second power transmission line and the second multi-circuit breaker connection branch, and the first busbar and the second busbar and the second multi-circuit breaker connection branch There is at least one circuit breaker between the contacts.

Description

a wiring device

technical field

The invention relates to line wiring technology, in particular to a wiring device.

Background technique

A flexible alternating current transmission system (FACTS, Flexible Alternative Current Transmission Systems) includes a series compensation device, a parallel compensation device and an integrated control device. Among them, the parallel compensation device can be directly connected to various levels of power grids, while the series compensation device and the comprehensive control device need to be connected in series at one end to the power grid.

At present, for the series compensation end of the series compensation device and the comprehensive control device, a series transformer is connected in series with a power transmission line. In many applications, series compensation of different lines at different time periods can significantly enhance the power flow regulation capability. However, the existing solution is to respectively connect a series transformer to multiple transmission lines, and then switch the selected connected series transformer through the output terminal of the converter. This method must make sure that at any time there is always a series transformer in bypass operation, resulting in waste of resources and increased costs; and when switching access lines, it is necessary to power off the entire set of devices before operating, and the converter cannot do so. To switch without power failure. And when there is a problem with the bypass switch or transformer on the series side of any line, the transmission line must be accompanied by a stop, resulting in the expansion of the accident.

Contents of the invention

In order to solve the existing technical problems, the embodiment of the present invention expects to provide a wiring device, which can realize time-sharing series compensation and non-power-off switching of multiple transmission lines.

The technical scheme of the embodiment of the present invention is realized like this:

According to an aspect of the embodiments of the present invention, there is provided a wiring device, the device comprising: a first multi-breaker wiring branch formed by at least three circuit breakers connected in series; Two multiple circuit breaker connection branches, a first compensator, a first power transmission line and a second power transmission line; wherein, the first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch are respectively connected to the second multiple circuit breaker connection branch Between the first busbar and the second busbar;

The first power transmission line is connected to the first multiple circuit breaker connection branch; the second power transmission line is connected to the second multiple circuit breaker connection branch;

The output end of the first compensator is respectively connected to the first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch; and the output terminal of the first compensator is connected to the first multiple circuit breaker connection branch; The contact point of the circuit breaker connection branch, the contact point of the first transmission line and the first multiple circuit breaker connection branch, and the first bus bar and the second bus bar and the first multiple circuit breaker connection branch At least one circuit breaker is arranged between the contacts of the circuit; the output terminal of the first compensator is connected to the contact point of the second multi-circuit breaker connection branch, and the connection between the second transmission line and the two multi-circuit breakers is connected. At least one circuit breaker is provided between the contact point of the branch circuit and the contact points between the first bus bar and the second bus bar and the second multi-breaker connection branch circuit.

In the above solution, the first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch are formed by connecting three circuit breakers in series; wherein, the contacts on the first multiple circuit breaker connection branch are from The direction from the first busbar to the second busbar is: the contact point between the first busbar and the first multiple circuit breaker connection branch, the connection between the first power transmission line and the first multiple circuit breaker The junction of the branch, the junction of the first compensator and the first multi-breaker wiring branch, and the junction of the second bus and the first multi-breaker wiring branch;

Or the contact point between the first bus bar and the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, the first transmission line and the first a contact point of a multi-breaker branch circuit and a contact point of the second bus bar and the first multi-breaker branch circuit;

The direction of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar is: the contact point between the first bus bar and the second multi-breaker wiring branch, the The junction of the second transmission line and the second multi-circuit breaker branch, the junction of the first compensator and the second multi-breaker branch, and the second bus and the second multi-breaker The contact point of the wiring branch of the device;

Or the contact point between the first busbar and the second multiple circuit breaker connection branch, the contact point between the first compensator and the second multiple circuit breaker connection branch, the second transmission line and the first A contact point of two multiple circuit breaker connection branches and a contact point between the second bus bar and the second multiple circuit breaker connection branch circuit.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch contact point, the contact point between the first transmission line and the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, and the second busbar and the The contacts of the first multiple circuit breaker branch circuit, including:

When series compensation is performed on the first transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the second multi-circuit breaker connection branch are closed, and at the same time, the The first power transmission line and the first multi-breaker connection branch and the circuit breaker between the first compensator and the first multi-breaker connection branch are closed; the first power transmission The circuit breaker between the contact point of the line and the first multi-breaker connection branch and the contact point between the first bus bar and the first multi-breaker connection branch is disconnected; the first compensator is connected to the The contact of the first multi-breaker branch and the circuit breaker between the second bus and the contact of the first multi-breaker branch are opened.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch joints, joints between the first compensator and the first multi-breaker wiring branch, joints between the first power transmission line and the first multi-breaker wiring branch, and the second busbar and the The contacts of the first multiple circuit breaker branch circuit, including:

When series compensation is performed on the first transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the second multi-circuit breaker connection branch are closed, and at the same time, the The first power transmission line and the first multi-breaker connection branch and the circuit breaker between the first compensator and the first multi-breaker connection branch are closed; the first power transmission The circuit breaker between the connection point of the line and the first multi-breaker connection branch and the connection point between the second bus bar and the first multi-breaker connection branch is disconnected; the first compensator is connected to the The contact of the first multiple circuit breaker branch and the circuit breaker between the first bus and the contact of the first multiple circuit breaker branch are opened.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the second transmission line and the second multiple circuit breaker connection branch, the contact point between the first compensator and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multiple circuit breaker wiring branch, including:

When series compensation is performed on the second power transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the first multi-breaker wiring branch are closed, and at the same time, the The second power transmission line and the second multi-breaker connection branch and the circuit breaker between the first compensator and the second multi-breaker connection branch are closed; the second power transmission The circuit breaker between the contact point of the line and the second multi-breaker connection branch and the contact point between the first bus bar and the second multi-breaker connection branch is disconnected; the first compensator is connected to the A contact point of a second multi-breaker branch circuit and a circuit breaker between the second bus bar and a contact point of the second multi-breaker branch circuit are opened.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the first compensator and the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multiple circuit breaker wiring branch, including:

When series compensation is performed on the second power transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the first multi-breaker wiring branch are closed, and at the same time, the The second power transmission line and the second multi-breaker connection branch and the circuit breaker between the first compensator and the second multi-breaker connection branch are closed; the second power transmission The circuit breaker between the contact point of the line and the second multi-breaker connection branch and the contact point between the second bus bar and the second multi-breaker connection branch is disconnected; the first compensator is connected to the A contact point of a second multi-breaker branch circuit and a circuit breaker between the first bus bar and a contact point of the second multi-breaker branch circuit are opened.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch contact point, the contact point between the first transmission line and the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, and the second busbar and the The contacts of the first multi-circuit breaker branch circuit also include:

Perform series compensation for the first power transmission line, and when the first busbar fails, the contact point between the first power transmission line and the first multi-breaker connection branch and the first compensator and the second The circuit breakers between the contacts of a multi-circuit breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all disconnected; the second bus bar and the second multi-circuit breaker branch circuit The contacts of the circuit and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch joints, joints between the first compensator and the first multi-breaker wiring branch, joints between the first power transmission line and the first multi-breaker wiring branch, and the second busbar and the The contacts of the first multi-circuit breaker branch circuit also include:

Perform series compensation for the first power transmission line, and when the first busbar fails, the contact point between the first power transmission line and the first multi-breaker connection branch and the first compensator and the second The circuit breakers between the contacts of a multi-circuit breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all disconnected; the second bus bar and the second multi-circuit breaker branch circuit The contacts of the circuit and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the second transmission line and the second multiple circuit breaker connection branch, the contact point between the first compensator and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multi-circuit breaker wiring branch also include:

Perform series compensation for the second power transmission line, and when the first bus bar fails, the contact point between the second power transmission line and the second multi-breaker connection branch and the first compensator and the first busbar The circuit breakers between the contacts of the two multiple circuit breaker wiring branches are closed; the other circuit breakers of the second multiple circuit breaker wiring branches are all disconnected; the second busbar is connected to the first multiple circuit breaker wiring branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the first compensator and the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multi-circuit breaker wiring branch also include:

Perform series compensation for the second power transmission line, and when the first bus bar fails, the contact point between the second power transmission line and the second multi-breaker connection branch and the first compensator and the first busbar The circuit breakers between the contacts of the two multiple circuit breaker wiring branches are closed; the other circuit breakers of the second multiple circuit breaker wiring branches are all disconnected; the second busbar is connected to the first multiple circuit breaker wiring branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch contact point, the contact point between the first transmission line and the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, and the second busbar and the The contacts of the first multi-circuit breaker branch circuit also include:

For the series compensation of the first power transmission line and the second busbar is faulty, the contact point between the first power transmission line and the first multi-breaker connection branch and the connection between the first compensator and the first The circuit breakers between the contacts of the multi-circuit breaker branch are closed; the other circuit breakers of the first multi-breaker branch are all disconnected; the first bus and the second multi-breaker branch and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch joints, joints between the first compensator and the first multi-breaker wiring branch, joints between the first power transmission line and the first multi-breaker wiring branch, and the second busbar and the The contacts of the first multi-circuit breaker branch circuit also include:

Perform series compensation for the first power transmission line, and when the second busbar is faulty, the contact between the first power transmission line and the first multi-breaker connection branch and the connection between the first compensator and the second busbar The circuit breakers between the contacts of a multi-circuit breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all disconnected; the first bus and the second multi-circuit breaker branch The contacts of the circuit and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the second transmission line and the second multiple circuit breaker connection branch, the contact point between the first compensator and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multi-circuit breaker wiring branch also include:

Perform series compensation for the second power transmission line, and when the second busbar is faulty, the contact between the second power transmission line and the second multi-breaker connection branch and the connection between the first compensator and the first The circuit breakers between the contacts of the two multiple circuit breaker connection branches are closed; the other circuit breakers of the second multiple circuit breaker connection branch are all disconnected; the first bus and the first multiple circuit breaker connection branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the first compensator and the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multi-circuit breaker wiring branch also include:

Perform series compensation for the second power transmission line, and when the second busbar is faulty, the contact between the second power transmission line and the second multi-breaker connection branch and the connection between the first compensator and the first The circuit breakers between the contacts of the two multiple circuit breaker connection branches are closed; the other circuit breakers of the second multiple circuit breaker connection branch are all disconnected; the first bus and the first multiple circuit breaker connection branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch contact point, the contact point between the first transmission line and the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, and the second busbar and the The contacts of the first multi-circuit breaker branch circuit also include:

When the first compensator fails, the contact between the first compensator and the first multiple circuit breaker branch circuit and the contact point between the first transmission line and the first multiple circuit breaker branch circuit The circuit breaker of the first compensator is opened; open; the contact between the first power transmission line and the first multiple circuit breaker branch and the circuit breaker between the first bus and the first multiple circuit breaker branch are closed.

In the above solution, the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the first multi-breaker wiring branch joints, joints between the first compensator and the first multi-breaker wiring branch, joints between the first power transmission line and the first multi-breaker wiring branch, and the second busbar and the The contacts of the first multi-circuit breaker branch circuit also include:

When the first compensator fails, the contact between the first compensator and the first multiple circuit breaker branch circuit and the contact point between the first transmission line and the first multiple circuit breaker branch circuit The circuit breaker of the first compensator is disconnected; open; the contact between the first power transmission line and the first multi-breaker branch circuit and the contact point between the second bus bar and the first multi-breaker branch circuit are closed.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the second transmission line and the second multiple circuit breaker connection branch, the contact point between the first compensator and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multi-circuit breaker wiring branch also include:

When the first compensator fails, the contact between the first compensator and the second multi-breaker connection branch and the second transmission line and the second multi-breaker connection branch The circuit breaker of the second transmission line is opened; the contact between the second transmission line and the second multiple circuit breaker branch circuit and the circuit breaker between the first bus and the contact point of the second multiple circuit breaker branch circuit are closed Above; the contact between the first compensator and the second multi-breaker branch and the circuit breaker between the second bus and the second multi-breaker branch are disconnected.

In the above solution, the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second multi-breaker wiring branch contact point, the contact point between the first compensator and the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, and the second busbar and the The contacts of the second multi-circuit breaker wiring branch also include:

When the first compensator fails, the contact between the first compensator and the second multi-breaker connection branch and the second transmission line and the second multi-breaker connection branch The circuit breaker of the second power transmission line is opened; the contact between the second transmission line and the second multiple circuit breaker branch circuit and the circuit breaker between the second busbar and the contact point of the second multiple circuit breaker branch circuit are closed Above; the contact between the first compensator and the second multi-breaker branch and the circuit breaker between the first bus and the second multi-breaker branch are disconnected.

In the above solution, the device further includes: a series transformer, the first compensator is connected to the first multi-breaker connection branch and the second multi-breaker connection branch through the series transformer; wherein,

The series transformer is connected to one side winding of the first compensator, and is connected to the first compensator through a star or delta connection; the series transformer is connected to one side winding of the transmission line, and is connected in series through phase separation The connection mode is connected with the first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch.

In the above solution, the device further includes: a bypass element, the bypass element is arranged on the side of the series transformer connecting the first multi-breaker connection branch and the second multi-breaker connection branch , for performing bypass isolation on the first compensator when the first compensator fails.

In the above scheme, the device further includes: a second compensator;

The second compensator is connected in series with the first compensator, and the output end of the second compensator is connected to a circuit breaker connected to the third bus.

In the solution above, the device further includes: a parallel transformer, and the second compensator is connected to a circuit breaker connected to the third bus through the parallel transformer.

In the above solution, both the first compensator or the second compensator are converters.

An embodiment of the present invention provides a wiring device, which includes: a first multi-circuit breaker wiring branch formed by connecting at least three circuit breakers in series; a second multi-circuit breaker wiring branch formed by connecting at least three circuit breakers in series; branch, the first compensator, the first transmission line and the second transmission line; wherein, the first multi-breaker connection branch and the second multi-breaker connection branch are respectively connected to the first bus and the second Between busbars; the first power transmission line is connected to the first multi-breaker connection branch; the second power transmission line is connected to the second multi-breaker connection branch; the output of the first compensator terminals are respectively connected to the first multi-breaker wiring branch and the second multi-breaker wiring branch; and the output terminal of the first compensator is connected to the first multi-breaker wiring branch. , between the contacts of the first power transmission line and the branch circuit with multiple circuit breakers, and the contacts between the first bus bar and the second bus bar and the first branch circuit with multiple circuit breakers at least one circuit breaker; the junction of the output end of the first compensator and the second multi-breaker connection branch, the junction of the second transmission line and the two multi-breaker connection branches, and the At least one circuit breaker is provided between the first busbar, the second busbar and the contact point of the second multi-breaker wiring branch. In this way, by connecting the first compensator to two multi-circuit breaker branches, the time-sharing series compensation of the compensator for the two lines is realized, and the device does not need to be powered off when the line is switched, which improves the flexibility, reliability and safety of the power grid sex.

Description of drawings

1 is a schematic diagram of the structure and composition of a wiring device according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a star-shaped connection of the winding on one side of the series transformer connected to the compensator in the embodiment of the present invention;

Fig. 3 is a schematic diagram of the wiring structure of the double circuit and double lines in the embodiment of the present invention.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Fig. 1 is a schematic diagram of the structure and composition of a wiring device according to an embodiment of the present invention; as shown in Fig. The second multi-circuit breaker wiring branch 102, the first compensator 103, the first power transmission line 104 and the second power transmission line 105 formed by connecting circuit breakers in series; wherein,

The first multiple circuit breaker connection branch 101 and the second multiple circuit breaker connection branch 102 are respectively connected between the first bus 106 and the second bus 107;

The first power transmission line 104 is connected to the first multi-breaker wiring branch 101; the second power transmission line 105 is connected to the second multi-breaker wiring branch 102;

The output ends of the first compensator 103 are respectively connected to the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102; and the output ends of the first compensator 103 are connected to the The contact point of the first multi-circuit breaker connection branch 101, the contact point between the first transmission line 104 and the one multi-breaker connection branch 101, and the connection between the first bus bar 106 and the second bus bar 107 and the At least one circuit breaker is provided between the contacts of the first multi-circuit breaker wiring branch 101;

The output terminal of the first compensator 103 and the junction of the second multi-breaker connection branch 102, the junction of the second transmission line 105 and the two multi-breaker connection branch 102, and the first At least one circuit breaker is provided between the first bus bar 106 and the second bus bar 107 and the second multiple circuit breaker branch circuit 102 .

Here, the first compensator 103 may be a converter, and both the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102 can be formed by three circuit breakers. Circuit breaker connection branch; wherein, the direction of the contacts on the first multiple circuit breaker connection branch 101 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the The contact point of the first multiple circuit breaker connection branch 101, the contact point between the first transmission line 104 and the first multiple circuit breaker connection branch 101, the first compensator 103 and the first multiple circuit breaker connection The junction of the branch 101 and the junction of the second bus 107 and the first multi-breaker wiring branch 101; or the junction of the first bus 106 and the first multi-breaker wiring branch 101, the The contact point between the first compensator 103 and the first multi-breaker connection branch 101, the connection point between the first power transmission line 104 and the first multi-breaker connection branch 101, and the second bus 107 and the first multi-breaker connection branch 101 The contact points of the first multi-circuit breaker wiring branch 101;

The direction of the contacts on the second multi-breaker connection branch 102 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the second multi-breaker connection branch 102, the second power transmission line 105 and the second multi-breaker connection branch 102, the first compensator 103 and the second multi-breaker connection branch 102, and the The junction of the second bus bar 107 and the second multi-breaker wiring branch 102; or the junction of the first bus 106 and the second multi-breaker wiring branch 102, the first compensator 103 and the The contact point of the second multiple circuit breaker connection branch 102, the contact point between the second power transmission line 105 and the second multiple circuit breaker connection branch 102, and the connection between the second bus bar 107 and the second multiple circuit breaker The junction of branch 102.

Here, 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: the first bus bar 106 is connected to the first multi-breaker breaker The junction of the branch 101, the junction of the first power transmission line 104 and the first multi-breaker connection branch 101, the junction of the first compensator 103 and the first multi-breaker connection branch 101, and The junction between the second busbar 107 and the first multi-breaker wiring branch 101 includes:

When series compensation is performed on the first power transmission line 104, and both the first bus bar 106 and the second bus bar 107 are operating normally, all circuit breakers on the second multi-circuit breaker wiring branch 105 are closed , at the same time, the contact between the first transmission line 104 and the first multi-breaker branch circuit 101 and the contact point between the first compensator 103 and the first multi-breaker branch circuit 101 are disconnected The switch is closed; the contact between the first transmission line 104 and the first multi-breaker branch circuit 101 and the contact point between the first bus bar 106 and the first multi-breaker branch circuit 101 are disconnected Disconnector disconnection; the disconnection between the junction of the first compensator 103 and the first multi-breaker wiring branch 101 and the junction of the second bus 107 and the first multi-breaker wiring branch 101 device is disconnected. For example, when series compensation is performed on the first power transmission line 104, and both the first bus 106 and the second bus 107 operate normally, the circuit breakers S4, Both S5 and S6 are closed, 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 directions of the contacts on the first multi-breaker connection branch 101 from the first bus 106 to the second bus 107 are: the first bus 106 and the first multi-breaker connection branch 101, the first compensator 103 and the first multi-breaker connection branch 101, the first power transmission line 104 and the first multi-breaker connection branch 101 and the The contact point between the second bus bar 107 and the first multi-breaker connection branch 101 includes:

When series compensation is performed on the first power transmission line 104, and both the first bus bar 106 and the second bus bar 107 are operating normally, all circuit breakers on the second multi-circuit breaker wiring branch 105 are closed , at the same time, the contact between the first transmission line 104 and the first multi-breaker branch circuit 101 and the contact point between the first compensator 103 and the first multi-breaker branch circuit 101 are disconnected The switch is closed; the contact between the first transmission line 104 and the first multi-breaker branch circuit 101 and the contact between the second bus bar 107 and the first multi-breaker branch circuit 101 are disconnected Disconnector disconnection; the contact between the first compensator 103 and the first multi-breaker branch circuit 101 and the contact between the first bus bar 106 and the first multi-breaker branch circuit 101 are disconnected device is disconnected. For example: for the series compensation of the first transmission line 104, and the first bus 106 and the second bus 107 are operating normally, the circuit breakers S4 and S5 on the second multi-breaker connection branch 105 , S6 are all closed, 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 of the contacts on the second multi-breaker connection branch 102 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the second multi-breaker connection branch 102, the junction of the second power transmission line 105 and the second multi-circuit breaker branch 102, the junction of the first compensator 102 and the second multi-breaker branch 102, and the The contact between the second busbar 107 and the second multi-breaker wiring branch 102 includes:

When series compensation is performed on the second power transmission line 105, and both the first bus bar 106 and the second bus bar 107 are operating normally, all circuit breakers on the first multi-breaker wiring branch 101 are closed , at the same time, the contact between the second transmission line 105 and the second multi-breaker branch circuit 102 and the contact point between the first compensator 103 and the second multi-breaker branch circuit 102 are disconnected The switch is closed; the contact between the second transmission line 105 and the second multi-breaker branch circuit 102 and the contact point between the first bus bar 106 and the second multi-breaker branch circuit 102 are disconnected Disconnector disconnection; the disconnection between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the second bus 107 and the second multi-breaker wiring branch 102 breaker disconnection, for example, when series compensation is performed on the second transmission line 105, and both the first bus bar 106 and the second bus bar 107 are operating normally, the The circuit breakers S1, S2 and S3 are all closed, the circuit breaker S5 on the second multi-circuit breaker connection branch 102 is closed, and the circuit breakers S4 and S6 are all open.

The direction of the contacts on the second multi-breaker connection branch 102 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the second multi-breaker connection branch 102, the first compensator 103 and the second multi-breaker connection branch 102, the second transmission line 105 and the second multi-breaker connection branch 102, and the The contact between the second busbar 107 and the second multi-breaker wiring branch 102 includes:

When series compensation is performed on the second power transmission line 105, and both the first bus bar 106 and the second bus bar 107 are operating normally, all circuit breakers on the first multi-breaker wiring branch 102 are closed , at the same time, the contact between the second transmission line 105 and the second multi-breaker branch circuit 102 and the contact point between the first compensator 103 and the second multi-breaker branch circuit 102 are disconnected The switch is closed; the contact between the second transmission line 105 and the second multi-breaker branch circuit 102 and the contact between the second bus bar 107 and the second multi-breaker branch circuit 102 are disconnected Disconnector disconnection; the disconnection between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the first bus 106 and the second multi-breaker wiring branch 102 device is disconnected.

In the embodiment of the present invention, the directions from the first bus bar 106 to the second bus bar 107 of the contacts on the first multi-circuit breaker wiring branch 101 are as follows: the first bus bar 106 and the second bus bar 106 A contact point of a multiple circuit breaker connection branch 101, a contact point between the first power transmission line 104 and the first multiple circuit breaker connection branch 101, the first compensator 103 and the first multiple circuit breaker connection branch The junction of the road 101 and the junction of the second bus bar 107 and the first multi-breaker connection branch 101 also includes:

When series compensation is performed on the first transmission line 104, and the first bus 106 or the second bus 107 fails, the first multi-breaker connection branch 101 and the second multi-breaker connection branch The circuit breakers closest to the fault bus on 102 are all disconnected. For example, the first compensator 103 performs series compensation on the first power transmission line 104, and when the first bus 106 fails, the first power transmission line 104 and the first multi-breaker connection branch 101 The contacts of the first compensator 103 and the circuit breaker S2 between the contacts of the first multi-breaker branch circuit 101 are closed; the other circuit breakers S1 of the first multi-circuit breaker branch circuit 101 and S3 is disconnected; the disconnection between the contact point between the second power transmission line 105 and the second multi-breaker branch circuit 102 and the contact point between the second bus bar 107 and the second multi-breaker branch circuit 102 The switches S5 and S6 are closed; the other circuit breaker S4 of the second multi-breaker connection branch 102 is turned off. When the second busbar 107 fails, the contact between the first transmission line 104 and the first multi-breaker connection branch 101 and the first compensator 103 and the first multi-breaker connection branch The circuit breaker S2 between the contacts of 101 is closed; the other circuit breakers S1 and S3 of the first multi-circuit breaker connection branch 101 are disconnected; the second transmission line 105 and the second multi-circuit breaker connection branch The contact of the road 102 and the circuit breaker S4 between the contacts of the first bus bar 106 and the second multi-breaker branch circuit 102 are closed; the other circuit breakers S5 of the second multi-breaker branch circuit 102 and S6 disconnected.

The directions of the contacts on the first multi-breaker connection branch 101 from the first bus 106 to the second bus 107 are: the first bus 106 and the first multi-breaker connection branch 101, the first compensator 103 and the first multi-breaker connection branch 101, the first power transmission line 104 and the first multi-breaker connection branch 101 and the The contact between the second bus bar 107 and the first multi-breaker connection branch 101 further includes:

When series compensation is performed on the first transmission line 104, and the first bus 106 or the second bus 107 fails, the first multi-breaker connection branch 101 and the second multi-breaker connection branch The circuit breakers closest to the fault bus on 102 are all disconnected. For example, the first compensator 103 performs series compensation on the first power transmission line 104, and when the first bus 106 fails, the first power transmission line 104 and the first multi-breaker connection branch 101 The contact of the first compensator 103 and the circuit breaker between the contacts of the first multi-breaker branch circuit 101 are closed; the other circuit breakers of the first multi-circuit breaker branch circuit 101 are disconnected; The second power transmission line 105 and the second multi-breaker connection branch 102 and the circuit breaker between the second bus bar 107 and the second multi-breaker connection branch 102 are switched on; Other circuit breakers of the second multi-circuit breaker connection branch 102 are disconnected. When the second busbar 107 fails, the contact between the first transmission line 104 and the first multi-breaker connection branch 101 and the first compensator 103 and the first multi-breaker connection branch The circuit breaker between the contacts of 101 is closed; the other circuit breakers of the first multi-circuit breaker connection branch 101 are disconnected; the contacts of the second transmission line 105 and the second multi-circuit breaker connection branch 102 The circuit breaker between the first bus bar 106 and the junction of the second multi-breaker branch circuit 102 is turned on; the other circuit breakers of the second multi-breaker branch circuit 102 are turned off.

The direction of the contacts on the second multi-breaker connection branch 102 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the second multi-breaker connection branch 102, the second power transmission line 105 and the second multi-breaker connection branch 102, the first compensator 103 and the second multi-breaker connection branch 102, and the The contact between the second bus bar 107 and the second multi-breaker wiring branch 102 also includes:

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 second multi-breaker connection branch 102 and the The circuit breakers closest to the faulty bus on the first multi-circuit breaker connection branch 101 are all disconnected. For example, the first compensator 103 performs series compensation on the second power transmission line 105, and when the first bus 106 fails, the second power transmission line 105 and the second multi-breaker connection branch 102 The contact of the first compensator 103 and the circuit breaker S5 between the contacts of the second multi-circuit breaker branch circuit 102 are closed; the other circuit breakers S4 of the second multi-circuit breaker branch circuit 102 and S6 is disconnected; the disconnection between the contact point between the first power transmission line 104 and the first multi-breaker branch circuit 101 and the contact point between the second bus bar 107 and the first multi-breaker branch circuit 101 The switches S2 and S3 are closed; the other circuit breaker S1 of the first multi-breaker connection branch 101 is turned off. When the second busbar 107 fails, the junction between the second transmission line 105 and the second multi-breaker connection branch 102 and the first compensator 103 and the second multi-breaker connection branch The circuit breaker S5 between the contacts of 102 is closed; the other circuit breakers S4 and S6 of the second multi-circuit breaker connection branch 102 are disconnected; the first transmission line 104 and the first multi-circuit breaker connection branch The contact point of road 101 and the circuit breaker S1 between the contact points of the first bus bar 106 and the first multi-breaker connection branch 101 are closed; the other circuit breakers S5 of the first multi-breaker connection branch 102 and S6 disconnected.

The direction of the contacts on the second multi-breaker connection branch 102 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the second multi-breaker connection branch 102, the first compensator 103 and the second multi-breaker connection branch 102, the second transmission line 105 and the second multi-breaker connection branch 102, and the The contact between the second bus bar 107 and the second multi-breaker wiring branch 102 also includes:

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 second multi-breaker connection branch 102 and the The circuit breakers closest to the faulty bus on the first multi-circuit breaker connection branch 101 are all disconnected. For example, the first compensator 103 performs series compensation on the second power transmission line 105, and when the first bus 106 fails, the second power transmission line 105 and the second multi-breaker connection branch 102 The contact of the first compensator 103 and the circuit breaker between the contacts of the second multi-breaker branch circuit 102 are closed; the other circuit breakers of the second multi-circuit breaker branch circuit 102 are disconnected; The first power transmission line 104 and the first multi-breaker connection branch 101 and the circuit breaker between the second bus 107 and the first multi-breaker connection branch 101 are switched on; Other circuit breakers of the first multi-circuit breaker branch circuit 101 are disconnected. When the second busbar 107 fails, the junction between the second transmission line 105 and the second multi-breaker connection branch 102 and the first compensator 103 and the second multi-breaker connection branch The circuit breaker between the contacts of 102 is closed; the other circuit breakers of the second multi-circuit breaker connection branch 102 are disconnected; the contact between the first transmission line 104 and the first multi-circuit breaker connection branch 101 The circuit breaker between the first bus bar 106 and the contact point of the first multi-breaker connection branch 101 is turned on; the other circuit breakers of the first multi-breaker connection branch 102 are turned off.

In the embodiment of the present invention, the directions from the first bus bar 106 to the second bus bar 107 of the contacts on the first multi-circuit breaker wiring branch 101 are as follows: the first bus bar 106 and the second bus bar 106 A contact point of a multiple circuit breaker connection branch 101, a contact point between the first power transmission line 104 and the first multiple circuit breaker connection branch 101, the first compensator 103 and the first multiple circuit breaker connection branch The junction of the road 101 and the junction of the second bus bar 107 and the first multi-breaker connection branch 101 also includes:

When the first compensator 103 fails or the first transmission line 104 does not need series compensation, the contact between the first compensator 103 and the first multi-breaker connection branch 101 and the first transmission line The circuit breaker between 104 and the contact point of the first multi-breaker connection branch 101 is disconnected; the contact point between the first compensator 103 and the first multi-breaker connection branch 101 and the second bus The circuit breaker between 107 and the contact point of the first multi-breaker connection branch 101 is disconnected; the contact point between the first power transmission line 104 and the first multi-breaker connection branch 101 and the first bus The circuit breaker between 106 and the contact point of the first multi-breaker wiring branch 101 is closed. For example: when the first compensator 103 fails, the circuit breakers S2 and S3 on the first multi-breaker connection branch 101 are turned off, and the circuit breaker S1 is turned on.

The directions of the contacts on the first multi-breaker connection branch 101 from the first bus 106 to the second bus 107 are: the first bus 106 and the first multi-breaker connection branch 101, the first compensator 103 and the first multi-breaker connection branch 101, the first power transmission line 104 and the first multi-breaker connection branch 101 and the The contact between the second bus bar 107 and the first multi-breaker connection branch 101 further includes:

When the first compensator 103 fails or the first transmission line 104 does not need series compensation, the contact between the first compensator 103 and the first multi-breaker connection branch 101 and the first transmission line The circuit breaker between 104 and the contact point of the first multi-breaker connection branch 101 is disconnected; the contact point between the first compensator 103 and the first multi-breaker connection branch 101 and the first bus The circuit breaker between 106 and the contact point of the first multi-breaker connection branch 101 is disconnected; the contact point between the first transmission line 104 and the first multi-breaker connection branch 101 and the second bus The circuit breaker between 107 and the contact point of the first multi-breaker wiring branch 101 is closed; for example: when the first compensator 103 fails, the circuit breaker S1 and S2 is open and circuit breaker S3 is closed.

The direction of the contacts on the second multi-breaker connection branch 102 from the first bus 106 to the second bus 107 is as follows: the first bus 106 and the second multi-breaker connection branch 102, the second power transmission line 105 and the second multi-breaker connection branch 102, the first compensator 103 and the second multi-breaker connection branch 102, and the The contact between the second bus bar 107 and the second multi-breaker wiring branch 102 also includes:

When the first compensator 103 fails or the second transmission line 105 does not need series compensation, the contact point between the first compensator 103 and the second multi-breaker connection branch 102 and the second transmission line 105 The circuit breaker between the contacts of the second multiple circuit breaker branch circuit 102 is disconnected; The circuit breaker between the contacts of the second multi-circuit breaker branch circuit 102 is disconnected; The circuit breaker between the contacts with the second multiple circuit breaker branch circuit 102 is closed; for example: when the first compensator 103 fails or the second transmission line 105 does not need series compensation, the second multiple The circuit breakers S5 and S6 on the circuit breaker branch 102 are opened, and the circuit breaker S4 is closed.

The direction of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar is: the contact point between the first bus bar and the second multi-breaker wiring branch, the The connection point between the first compensator and the second multi-breaker connection branch, the connection point between the second transmission line and the second multi-breaker connection branch, and the second busbar and the second multi-breaker circuit The contacts of the wiring branch of the device also include:

When the first compensator 103 fails or the second transmission line 105 does not need series compensation, the contact point between the first compensator 103 and the second multi-breaker connection branch 102 and the second transmission line 105 The circuit breaker between the contacts of the second multi-circuit breaker branch circuit 102 is disconnected; The circuit breaker between the contacts of the second multiple circuit breaker branch circuit 102 is disconnected; The circuit breaker between the contacts with the second multi-breaker wiring branch 102 is closed; for example: when the first compensator 103 fails, the circuit breaker S4 on the second multi-circuit breaker wiring branch 102 And S5 is disconnected, and the circuit breaker S3 is closed. In this way, the power failure phenomenon of the transmission line will not occur due to the failure or active withdrawal of the components on the device, which greatly improves the reliability and safety of the transmission line.

In the embodiment of the present invention, the device further includes: a series transformer T1, the first compensator 103 is connected to the first multi-circuit breaker wiring branch 101 and the second multi-circuit breaker through the series transformer T1 The connection branch 102 is connected; wherein, the series transformer T1 is connected to one side winding of the first compensator 103, and is connected to the first compensator 103 through a star or delta connection; the series transformer T1 The winding on one side of the transmission line is connected to the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102 through a phase-splitting and series connection.

Here, the star connection means that one end of the three-phase power supply winding or load is connected together to form a neutral line, and three phase lines are drawn out from the other end. The angled connection method refers to connecting the power sources or loads of each phase end-to-end in turn, and leading out each connected point as three phase lines of three-phase electricity, and, in the embodiment of the present invention, the The series transformer T1 is not limited to two windings, but includes at least one set of compensator-side windings and line-side windings.

Fig. 2 is a schematic diagram of a star-shaped connection of one side of the winding of the series transformer connected to the compensator in the embodiment of the present invention; the specific star-shaped connection method is shown in Fig. 2, and the three phase lines drawn from the first compensator 103, One of them is grounded, and the other two are respectively connected to the first multi-breaker wiring branch 101 and the second multi-breaker wiring branch 102 . By controlling the circuit breakers on the first multi-breaker connection branch 101 and/or the second multi-breaker connection branch 102, series compensation is made to the transmission line.

In the embodiment of the present invention, the device further includes: a bypass element, the bypass element is arranged on the series transformer T1 to connect the first multi-breaker wiring branch 101 and the second multi-breaker wiring One side of the branch 102 is used for bypass isolation of the first compensator 103 when the first compensator 103 fails.

In the embodiment of the present invention, the device further includes: a second compensator 108, the second compensator 108 is connected in series with the first compensator 103, and the output terminal of the second compensator 108 is connected to The circuit breaker S7 of the third bus 109 is connected.

Here, the second compensator 108 may also be a converter, specifically, it may be connected to the third bus 109 through a parallel transformer T2.

The device described in the embodiment of the present invention can also be extended to multiple/multi-circuit line application scenarios through combination, as shown in Figure 3. Figure 3 shows a schematic diagram of the wiring of double-circuit and double-line in the embodiment of the present invention, wherein , there are two sets of connection structures connected between the first bus 106 and the second bus 107, one of which is the first multi-breaker connection branch 101, the second multi-breaker connection branch 102, the The first compensator 103, the first transmission line 104 and the second transmission line 105; the other group is the first multi-breaker connection branch 101', the second multi-breaker connection branch 102', the first compensator 103', the first power transmission line 104' and the second power transmission line 105', and the two sets of wiring structures are similar to those in Fig. 1 and Fig. 2, and the similarities will not be described in detail. You can refer to the description of the above Fig. 1 and Fig. 2, The difference is that the two sets of wiring structures can share a set of parallel transformer T2 and the second compensator 108 , and the connection structure of the parallel transformer T2 and the second compensator 108 can refer to the above 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 two sets of double-circuit transmission lines 104, 104' and 105, 105' in a time-sharing manner, And it can be switched under power, which improves the flexibility, reliability and safety of FACTS connected to the power grid, and the implementation method is simple and flexible.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can 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 and optical storage, etc.) 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 should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising an arrangement of instructions, The instruction means implements the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (24)

1. A wiring device, characterized in that the device comprises: a first multi-circuit breaker wiring branch formed by at least three circuit breakers connected in series, and a second multi-circuit breaker formed by at least three circuit breakers connected in series connection branch, first compensator, first transmission line and second transmission line; wherein, The first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch are respectively connected between the first bus bar and the second bus bar; The first power transmission line is connected to the first multiple circuit breaker connection branch; the second power transmission line is connected to the second multiple circuit breaker connection branch; The output end of the first compensator is respectively connected to the first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch; and the output terminal of the first compensator is connected to the first multiple circuit breaker connection branch; The contact point of the circuit breaker connection branch, the contact point of the first transmission line and the first multiple circuit breaker connection branch, and the first bus bar and the second bus bar and the first multiple circuit breaker connection branch At least one circuit breaker is arranged between the contacts of the circuit; the output terminal of the first compensator is connected to the contact point of the second multi-circuit breaker connection branch, and the connection between the second transmission line and the two multi-circuit breakers is connected. At least one circuit breaker is provided between the contact point of the branch circuit and the contact point between the first bus bar and the second bus bar and the second multi-breaker connection branch circuit; The first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch are both three-half circuit breaker connection branches formed by three circuit breakers. 2. The device according to claim 1, wherein the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch are formed by connecting three circuit breakers in series; wherein, the The direction of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar is as follows: the contact point between the first bus bar and the first multi-breaker wiring branch, the first The connection point between the transmission line and the first multiple circuit breaker connection branch, the connection point between the first compensator and the first multiple circuit breaker connection branch, and the connection between the second bus bar and the first multiple circuit breaker the junction of the branch; Or the contact point between the first bus bar and the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, the first transmission line and the first a contact point of a multi-breaker branch circuit and a contact point of the second bus bar and the first multi-breaker branch circuit; The direction of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar is: the contact point between the first bus bar and the second multi-breaker wiring branch, the The junction of the second transmission line and the second multi-circuit breaker branch, the junction of the first compensator and the second multi-breaker branch, and the second bus and the second multi-breaker The contact point of the wiring branch of the device; Or the contact point between the first busbar and the second multiple circuit breaker connection branch, the contact point between the first compensator and the second multiple circuit breaker connection branch, the second transmission line and the first A contact point of two multiple circuit breaker connection branches and a contact point between the second bus bar and the second multiple circuit breaker connection branch circuit. 3. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multi-breaker connection branch, the contact point between the first transmission line and the first multi-breaker connection branch, the first compensator and the first multi-breaker connection branch and the contacts of the second busbar and the first multi-circuit breaker wiring branch, including: When series compensation is performed on the first transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the second multi-circuit breaker connection branch are closed, and at the same time, the The first power transmission line and the first multi-breaker connection branch and the circuit breaker between the first compensator and the first multi-breaker connection branch are closed; the first power transmission The circuit breaker between the contact point of the line and the first multi-breaker connection branch and the contact point between the first bus bar and the first multi-breaker connection branch is disconnected; the first compensator is connected to the The contact of the first multi-breaker branch and the circuit breaker between the second bus and the contact of the first multi-breaker branch are opened. 4. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, the first power transmission line and the first multiple circuit breaker connection branch and the contacts of the second busbar and the first multi-circuit breaker wiring branch, including: When series compensation is performed on the first transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the second multi-circuit breaker connection branch are closed, and at the same time, the The first power transmission line and the first multi-breaker connection branch and the circuit breaker between the first compensator and the first multi-breaker connection branch are closed; the first power transmission The circuit breaker between the connection point of the line and the first multi-breaker connection branch and the connection point between the second bus bar and the first multi-breaker connection branch is disconnected; the first compensator is connected to the The contact of the first multiple circuit breaker branch and the circuit breaker between the first bus and the contact of the first multiple circuit breaker branch are opened. 5. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, the first compensator and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, including: When series compensation is performed on the second power transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the first multi-breaker wiring branch are closed, and at the same time, the The second power transmission line and the second multi-breaker connection branch and the circuit breaker between the first compensator and the second multi-breaker connection branch are closed; the second power transmission The circuit breaker between the contact point of the line and the second multi-breaker connection branch and the contact point between the first bus bar and the second multi-breaker connection branch is disconnected; the first compensator is connected to the A contact point of a second multi-breaker branch circuit and a circuit breaker between the second bus bar and a contact point of the second multi-breaker branch circuit are opened. 6. The device according to claim 2, characterized in that the directions of the contacts on the second multi-circuit breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the first compensator and the second multiple circuit breaker connection branch, the second power transmission line and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, including: When series compensation is performed on the second power transmission line, and both the first bus bar and the second bus bar are operating normally, all circuit breakers on the first multi-breaker wiring branch are closed, and at the same time, the The second power transmission line and the second multi-breaker connection branch and the circuit breaker between the first compensator and the second multi-breaker connection branch are closed; the second power transmission The circuit breaker between the contact point of the line and the second multi-breaker connection branch and the contact point between the second bus bar and the second multi-breaker connection branch is disconnected; the first compensator is connected to the A contact point of a second multi-breaker branch circuit and a circuit breaker between the first bus bar and a contact point of the second multi-breaker branch circuit are opened. 7. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multi-breaker connection branch, the contact point between the first transmission line and the first multi-breaker connection branch, the first compensator and the first multi-breaker connection branch and the contacts of the second busbar and the first multi-breaker wiring branch, further comprising: Perform series compensation for the first power transmission line, and when the first busbar fails, the contact point between the first power transmission line and the first multi-breaker connection branch and the first compensator and the second The circuit breakers between the contacts of a multi-circuit breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all disconnected; the second bus bar and the second multi-circuit breaker branch circuit The contacts of the circuit and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off. 8. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, the first power transmission line and the first multiple circuit breaker connection branch and the contacts of the second busbar and the first multi-breaker wiring branch, further comprising: Perform series compensation for the first power transmission line, and when the first busbar fails, the contact point between the first power transmission line and the first multi-breaker connection branch and the first compensator and the second The circuit breakers between the contacts of a multi-circuit breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all disconnected; the second busbar is connected to the second multi-circuit breaker branch circuit The contacts of the circuit and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off. 9. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, the first compensator and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, further comprising: Perform series compensation for the second power transmission line, and when the first bus bar fails, the contact point between the second power transmission line and the second multi-breaker connection branch and the first compensator and the first busbar The circuit breakers between the contacts of the two multiple circuit breaker wiring branches are closed; the other circuit breakers of the second multiple circuit breaker wiring branches are all disconnected; the second busbar is connected to the first multiple circuit breaker wiring branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off. 10. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the first compensator and the second multiple circuit breaker connection branch, the second power transmission line and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, further comprising: Perform series compensation for the second power transmission line, and when the first bus bar fails, the contact point between the second power transmission line and the second multi-breaker connection branch and the first compensator and the first busbar The circuit breakers between the contacts of the two multiple circuit breaker wiring branches are closed; the other circuit breakers of the second multiple circuit breaker wiring branches are all disconnected; the second busbar is connected to the first multiple circuit breaker wiring branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off. 11. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multi-breaker connection branch, the contact point between the first transmission line and the first multi-breaker connection branch, the first compensator and the first multi-breaker connection branch and the contacts of the second busbar and the first multi-breaker wiring branch, further comprising: For the series compensation of the first power transmission line and the second busbar is faulty, the contact point between the first power transmission line and the first multi-breaker connection branch and the connection between the first compensator and the first The circuit breakers between the contacts of the multi-circuit breaker branch are closed; the other circuit breakers of the first multi-breaker branch are all disconnected; the first bus and the second multi-breaker branch and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off. 12. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, the first power transmission line and the first multiple circuit breaker connection branch and the contacts of the second busbar and the first multi-breaker wiring branch, further comprising: Perform series compensation for the first power transmission line, and when the second busbar is faulty, the contact between the first power transmission line and the first multi-breaker connection branch and the connection between the first compensator and the second busbar The circuit breakers between the contacts of a multi-circuit breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all disconnected; the first bus and the second multi-circuit breaker branch The contacts of the circuit and the circuit breakers between the contacts of the second power transmission line and the second multi-circuit breaker branch circuit are closed; the other circuit breakers of the second multi-circuit breaker branch circuit are all turned off. 13. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, the first compensator and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, further comprising: Perform series compensation for the second power transmission line, and when the second busbar is faulty, the contact between the second power transmission line and the second multi-breaker connection branch and the connection between the first compensator and the first The circuit breakers between the contacts of the two multiple circuit breaker connection branches are closed; the other circuit breakers of the second multiple circuit breaker connection branch are all disconnected; the first bus and the first multiple circuit breaker connection branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off. 14. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the first compensator and the second multiple circuit breaker connection branch, the second power transmission line and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, further comprising: Perform series compensation for the second power transmission line, and when the second busbar is faulty, the contact between the second power transmission line and the second multi-breaker connection branch and the connection between the first compensator and the first The circuit breakers between the contacts of the two multiple circuit breaker connection branches are closed; the other circuit breakers of the second multiple circuit breaker connection branch are all disconnected; the first bus and the first multiple circuit breaker connection branch The contacts of the circuit and the circuit breakers between the contacts of the first power transmission line and the first multi-breaker branch circuit are closed; the other circuit breakers of the first multi-circuit breaker branch circuit are all turned off. 15. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multi-breaker connection branch, the contact point between the first transmission line and the first multi-breaker connection branch, the first compensator and the first multi-breaker connection branch and the contacts of the second busbar and the first multi-breaker wiring branch, further comprising: When the first compensator fails, the contact between the first compensator and the first multiple circuit breaker branch circuit and the contact point between the first transmission line and the first multiple circuit breaker branch circuit The circuit breaker of the first compensator is opened; open; the contact between the first power transmission line and the first multiple circuit breaker branch and the circuit breaker between the first bus and the first multiple circuit breaker branch are closed. 16. The device according to claim 2, characterized in that the directions of the contacts on the first multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The contact point of the first multiple circuit breaker connection branch, the contact point between the first compensator and the first multiple circuit breaker connection branch, the first power transmission line and the first multiple circuit breaker connection branch and the contacts of the second busbar and the first multi-breaker wiring branch, further comprising: When the first compensator fails, the contact between the first compensator and the first multiple circuit breaker branch circuit and the contact point between the first transmission line and the first multiple circuit breaker branch circuit The circuit breaker of the first compensator is disconnected; open; the contact between the first power transmission line and the first multi-breaker branch circuit and the contact point between the second bus bar and the first multi-breaker branch circuit are closed. 17. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the second transmission line and the second multiple circuit breaker connection branch, the first compensator and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, further comprising: When the first compensator fails, the contact between the first compensator and the second multi-breaker connection branch and the second transmission line and the second multi-breaker connection branch The circuit breaker of the second transmission line is opened; the contact between the second transmission line and the second multiple circuit breaker branch circuit and the circuit breaker between the first bus and the contact point of the second multiple circuit breaker branch circuit are closed Above; the contact between the first compensator and the second multi-breaker branch and the circuit breaker between the second bus and the second multi-breaker branch are disconnected. 18. The device according to claim 2, characterized in that the directions of the contacts on the second multi-breaker wiring branch from the first bus bar to the second bus bar are: the first bus bar and the second bus bar The junction of the second multiple circuit breaker connection branch, the connection point between the first compensator and the second multiple circuit breaker connection branch, the second power transmission line and the second multiple circuit breaker connection branch and the contacts of the second busbar and the second multi-circuit breaker wiring branch, further comprising: When the first compensator fails, the contact between the first compensator and the second multi-breaker connection branch and the second transmission line and the second multi-breaker connection branch The circuit breaker of the second power transmission line is opened; the contact between the second transmission line and the second multiple circuit breaker branch circuit and the circuit breaker between the second busbar and the contact point of the second multiple circuit breaker branch circuit are closed Above; the contact between the first compensator and the second multi-breaker branch and the circuit breaker between the first bus and the second multi-breaker branch are disconnected. 19. The device according to claim 1, further comprising: a series transformer, through which the first compensator is connected to the first multi-breaker wiring branch and the first 2. Multiple circuit breaker wiring branch connections; where, The series transformer is connected to one side winding of the first compensator, and is connected to the first compensator through a star or delta connection; the series transformer is connected to one side winding of the transmission line, and is connected in series through phase separation The connection mode is connected with the first multiple circuit breaker connection branch and the second multiple circuit breaker connection branch. 20. The device according to claim 19, characterized in that, the device further comprises: a bypass element, the bypass element is arranged on the series transformer connecting the first multi-circuit breaker wiring branch and the One side of the second multi-breaker connection branch is used for bypass isolation of the first compensator when the first compensator fails. 21. The device according to claim 1, further comprising: a second compensator; The second compensator is connected in series with the first compensator, and the output end of the second compensator is connected to a circuit breaker connected to the third bus. 22. The device according to claim 21, further comprising: a parallel transformer, the second compensator is connected to a circuit breaker connected to the third bus through the parallel transformer. 23. The apparatus of claim 1, wherein the first compensator is a converter. 24. The apparatus of claim 21, wherein the second compensator is an inverter.