CN206323138U - A kind of termination - Google Patents
A kind of termination Download PDFInfo
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- CN206323138U CN206323138U CN201621061249.4U CN201621061249U CN206323138U CN 206323138 U CN206323138 U CN 206323138U CN 201621061249 U CN201621061249 U CN 201621061249U CN 206323138 U CN206323138 U CN 206323138U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 177
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Abstract
The utility model discloses a kind of termination, described device includes：The branch road of breaker connection more than first, the branch road of breaker connection more than second, the first compensator and the first transmission line of electricity；Wherein, the branch road of breaker connection more than first and the branch road of breaker connection more than second are connected between the first bus and the second bus；First transmission line of electricity is connected to breaker connection branch road more than second；The output end of first compensator is connected to the branch road of breaker connection more than first and breaker connection branch road more than second；And first compensator output end and the contact of the branch road of breaker connection more than second, the first transmission line of electricity and the contact and the first bus of the branch road of breaker connection more than two and the second bus and the branch road of breaker connection more than second contact between be equipped with least one breaker；At least one breaker is provided between the contact of the output end of first compensator and the contact and the first bus of the branch road of breaker connection more than first and the second bus and the branch road of breaker connection more than first.
Description
Technical Field
The utility model relates to a circuit wiring technique, concretely relates to termination.
Background
The Flexible Alternating Current Transmission System (FACTS) includes a series compensation device, a parallel compensation device, and a comprehensive control device. The parallel compensation device can be directly connected to power grids of various grades, and the series compensation device and the comprehensive control device can be connected to the power grids only by connecting one end in series.
At present, a series transformer is connected in series into a power transmission line at the series compensation end of a series compensation device and a series compensation end of a comprehensive control device. In many applications, series compensation of different lines at different time periods may provide significant enhancement of power flow regulation. In the existing scheme, a plurality of power transmission lines are respectively connected with a series transformer, and the connected series transformers are switched and selected through the output end of a current converter. In such a way, one series transformer always runs in a bypass mode at any time, so that resource waste and cost increase are caused; when the access line is switched, the whole set of device needs to be completely powered off and then operated, and the converter cannot be switched without power failure. And when a bypass switch or a transformer on the serial side of any line has a problem, the transmission line must be accompanied and stopped, so that the accident is enlarged.
Disclosure of Invention
For solving the technical problem that exists now, the embodiment of the utility model provides a it is expected to provide a termination, can realize many transmission line's timesharing series compensation and switching without power failure.
The embodiment of the utility model provides a technical scheme is so realized:
according to an aspect of an embodiment of the present invention, there is provided a wiring device including: the circuit breaker comprises a first multi-breaker wiring branch formed by connecting at least two circuit breakers in series, a second multi-breaker wiring branch formed by connecting at least four circuit breakers in series, a first compensator and a first power transmission line; wherein,
the first multi-breaker wiring branch and the second multi-breaker wiring branch are respectively connected between the first bus and the second bus;
the first power transmission line is connected to the second multi-breaker wiring branch;
the output end of the first compensator is respectively connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the joint of the second multi-circuit breaker wiring branch circuit and the joint of the first transmission line and the second multi-circuit breaker wiring branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the joint of the second multi-circuit breaker wiring branch circuit and the joint of the first bus and the second multi-circuit breaker wiring branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the joint of the second multi-circuit breaker wiring branch circuit and the joint of the second bus and the second multi-circuit breaker wiring branch circuit; at least one circuit breaker is arranged between a connection point of the first power transmission line and the second multi-circuit breaker connection branch circuit and a connection point of the first bus and the second multi-circuit breaker connection branch circuit; at least one circuit breaker is arranged between the connection point of the first power transmission line and the second multi-circuit breaker connection branch circuit and the connection point of the second bus and the second multi-circuit breaker connection branch circuit;
at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the first multi-circuit breaker connection branch circuit, and between the first bus and the connection point of the second bus and the first multi-circuit breaker connection branch circuit.
In the above aspect, the contacts on the second multi-breaker connection branch sequentially include, in a direction from the first bus bar to the second bus bar: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch;
or a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch.
In the above aspect, the contacts on the second multi-breaker connection branch sequentially include, in a direction from the first bus bar to the second bus bar: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch, comprising:
when the first power transmission line is subjected to series compensation, the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the first compensator and the second multi-breaker wiring branch are switched on, the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the first bus and the second multi-breaker wiring branch are switched off, and the circuit breakers between the connection point of the first compensator and the second multi-breaker wiring branch and the connection point of the second bus and the second multi-breaker wiring branch are switched off.
In the above aspect, the contacts on the second multi-breaker connection branch sequentially include, in a direction from the first bus bar to the second bus bar: a junction between the first busbar and the second multi-breaker wiring limb, a junction between the first compensator and the second multi-breaker wiring limb, a junction between the first transmission line and the second multi-breaker wiring limb and a junction between the second busbar and the second multi-breaker wiring limb, comprising:
when the first power transmission line is subjected to series compensation, the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the first compensator and the second multi-breaker wiring branch are switched on, the circuit breakers between the connection point of the first compensator and the second multi-breaker wiring branch and the connection point of the first bus and the second multi-breaker wiring branch are switched off, and the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the second bus and the second multi-breaker wiring branch are switched off.
In the above scheme, the apparatus further comprises: a second transmission line;
the second transmission line is connected to the second multi-breaker wiring branch;
and at least one circuit breaker is arranged between the connection point of the second power transmission line and the second multi-circuit breaker connection branch, the connection point of the first power transmission line and the second multi-circuit breaker connection branch, the connection point of the output end of the first compensator and the second multi-circuit breaker connection branch, and the connection points of the first bus, the second bus and the second multi-circuit breaker connection branch.
In the scheme, the second multi-breaker wiring branch is formed by connecting four breakers in series;
and the direction of the contact points on the second multi-circuit breaker wiring branch from the first bus bar to the second bus bar sequentially comprises: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch;
or a junction between the first busbar and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch.
In the above aspect, the contacts on the second multi-breaker connection branch sequentially include, in a direction from the first bus bar to the second bus bar: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch, comprising:
when the first power transmission line is compensated in series, a circuit breaker between a contact of the first power transmission line and the second multi-breaker wiring branch and a circuit breaker between the first compensator and the contact of the second multi-breaker wiring branch are switched on, and a circuit breaker between a contact of the first power transmission line and the second multi-breaker wiring branch and a circuit breaker between the first bus and the contact of the second multi-breaker wiring branch are switched off; a circuit breaker between a junction of the first compensator and the second multi-breaker wiring branch and a junction of the second transmission line and the second multi-breaker wiring branch is opened;
when the second power transmission line is compensated in series, the circuit breakers between the connection point of the second power transmission line and the second multi-breaker wiring branch and the connection point of the first compensator and the second multi-breaker wiring branch are switched on, and the circuit breakers between the connection point of the second power transmission line and the second multi-breaker wiring branch and the connection point of the second bus and the second multi-breaker wiring branch are switched off; the first compensator is disconnected from the circuit breaker between the junction of the second multi-breaker wiring branch and the junction of the first transmission line and the second multi-breaker wiring branch.
In the above aspect, the contacts on the second multi-breaker connection branch sequentially include, in a direction from the first bus bar to the second bus bar: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch, comprising:
when the first power transmission line is compensated in series, the circuit breakers between the connection points of the first power transmission line and the second multi-breaker wiring branch and the connection points of the first compensator and the second multi-breaker wiring branch are switched on, and the circuit breakers between the connection points of the first power transmission line and the second multi-breaker wiring branch and the connection points of the second bus and the second multi-breaker wiring branch are switched off; a circuit breaker between a junction of the first compensator and the second multi-breaker wiring branch and a junction of the second transmission line and the second multi-breaker wiring branch is opened;
when the second power transmission line is compensated in series, the second power transmission line is connected with a circuit breaker between a contact of the second multi-circuit breaker wiring branch and a contact of the first compensator and the second multi-circuit breaker wiring branch; and the circuit breakers between the connection point of the second power transmission line and the second multi-circuit breaker connection branch and the connection point of the first bus and the second multi-circuit breaker connection branch are disconnected, and the circuit breakers between the connection point of the first compensator and the second multi-circuit breaker connection branch and the connection point of the first power transmission line and the second multi-circuit breaker connection branch are disconnected.
In the above scheme, when the first bus and the second bus both operate normally, all the circuit breakers on the first multi-circuit breaker connection branch circuit are closed;
and when the first bus or the second bus has a fault, the circuit breaker closest to the fault bus on the first multi-circuit breaker wiring branch is disconnected.
In the above aspect, when the first compensator fails, the first compensator is disconnected from the breaker closest to the contact of the first multi-breaker connection branch;
a circuit breaker between a junction of the first compensator and the second multi-breaker wiring branch and a junction of the first transmission line and the second multi-breaker wiring branch is opened;
the circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the second transmission line and the second multi-breaker wiring branch is opened.
In the above scheme, the apparatus further comprises: a series transformer through which the first compensator is connected with the first and second multi-breaker wiring branches; wherein,
the series transformer is connected with a winding on one side of the first compensator and is connected with the first compensator in a star or angle connection mode; the series transformer is connected with a winding on one side of the power transmission line and is connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch in a split-phase series connection mode.
In the above scheme, the apparatus further comprises: and the bypass element is arranged on one side of the series transformer, which is connected with the first multi-circuit breaker connection branch and the second multi-circuit breaker connection branch, and is used for performing bypass isolation on the first compensator when the first compensator fails.
In the above scheme, the apparatus further comprises: a second compensator;
the second compensator is connected with the first compensator in series, and the output end of the second compensator is connected with the first multi-circuit breaker wiring branch or a circuit breaker connected with a third bus; and at least one circuit breaker is arranged between the junction of the second compensator and the first multi-circuit breaker wiring branch and the junction of the first bus or the second bus and the first multi-circuit breaker wiring branch.
In the above scheme, the apparatus further comprises: a shunt transformer through which the second compensator is connected with the first multi-breaker wiring branch or a breaker connected with the third bus.
In the above arrangement, the positions of the contacts of the first compensator and the first multi-breaker connection branch may be the same as or different from the positions of the contacts of the second compensator and the first multi-breaker connection branch.
In the above scheme, the first compensator and the second compensator are both converters.
An embodiment of the utility model provides a termination, the device includes: the circuit breaker comprises a first multi-breaker wiring branch formed by connecting at least two circuit breakers in series, a second multi-breaker wiring branch formed by connecting at least four circuit breakers in series, a first compensator and a first power transmission line; wherein the first and second multi-breaker wiring branches are connected between the first and second busbars, respectively; the first power transmission line is connected to the second multi-breaker wiring branch; the output end of the first compensator is respectively connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the second multi-circuit breaker connection branch circuit, between the first transmission line and the connection point of the two multi-circuit breaker connection branch circuits, and between the first bus and the connection points of the second bus and the second multi-circuit breaker connection branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the first multi-circuit breaker connection branch circuit, and between the first bus and the connection point of the second bus and the first multi-circuit breaker connection branch circuit. Therefore, the first compensator is connected with the two multi-circuit breaker branches, time-sharing series compensation of the compensator on the two lines is achieved, the device does not need to be powered off when the lines are switched, and flexibility, reliability and safety of a power grid are improved.
Drawings
Fig. 1 is a schematic structural diagram of a wiring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another wiring device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of star-shaped wiring of one side winding of the series transformer connected to the compensator according to the embodiment of the present invention;
fig. 4 is a schematic diagram of a wiring structure of the embodiment of the present invention in which other bus bars are connected to the parallel side;
fig. 5 is a schematic diagram of a wiring structure of a dual-circuit dual-line according to an embodiment of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Fig. 1 is a schematic structural diagram of a wiring device according to an embodiment of the present invention; as shown in fig. 1, the apparatus includes: the circuit breaker comprises a first multi-breaker wiring branch 101 formed by connecting at least two circuit breakers in series, a second multi-breaker wiring branch 102 formed by connecting at least four circuit breakers in series, a first compensator 103 and a first transmission line 104; wherein,
the first and second multi-breaker connection branches 101, 102 are connected between the first and second busbars 105, 106, respectively;
the first transmission line 104 is connected to the second multi-breaker wiring branch 102;
the output of the first compensator 103 is connected to the first and second multi-breaker connection branches 101 and 102, respectively; at least one circuit breaker is arranged between the joint of the output end of the first compensator 103 and the second multi-breaker wiring branch 102 and the joint of the first transmission line 104 and the second multi-breaker wiring branch 102; at least one circuit breaker is arranged between the junction of the output end of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the first bus bar 105 and the second multi-breaker wiring branch 102; at least one circuit breaker is arranged between the junction of the output end of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the second bus 106 and the second multi-breaker wiring branch 102; at least one circuit breaker is arranged between the connection point of the first power transmission line 104 and the second multi-breaker connection branch 102 and the connection point of the first bus 105 and the second multi-breaker connection branch 102; at least one circuit breaker is arranged between the connection point of the first power transmission line 104 and the second multi-breaker connection branch 102 and the connection point of the second bus 106 and the second multi-breaker connection branch 102;
at least one circuit breaker is arranged between the connection point of the output of the first compensator 103 and the first multi-circuit breaker connection branch 101, and the connection point of the first busbar 105, the second busbar 106 and the first multi-circuit breaker connection branch 101.
Here, the first compensator 103 may be an inverter; the first bus bar 105 and the second bus bar 106 are bus lines for transmitting power from a power station or a substation, and transmit power output from a generator, a transformer, or the like to each user or other substations.
In the embodiment of the present invention, the second multi-breaker connection branch 102 is specifically a four-third breaker connection branch, and the contact on the second multi-breaker connection branch 102 sequentially includes from the first bus 105 to the direction of the second bus 106: the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102;
or the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102.
Here, the second multi-breaker connection branch 102 is formed by four breakers connected in series, specifically by breakers S1, S2, S3, and S4 connected in series. The contacts on the second multiple breaker connection branch 102 comprise, in order from the first busbar 105 to the second busbar 106: the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102, include:
when the first transmission line 104 is compensated in series, the circuit breakers between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 are closed, the circuit breakers between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the first bus 105 and the second multi-breaker wiring branch 102 are opened, and the circuit breakers between the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 and the contact point of the second bus 106 and the second multi-breaker wiring branch 102 are opened. For example, when series compensation is applied to a first transmission line 104, when the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is between the circuit breakers S1 and S2, then the circuit breakers S1 and S3 on the second multi-breaker wiring branch 102 are opened and the circuit breaker S2 is closed, and when the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is between the circuit breakers S2 and S3, the circuit breakers S2 and S4 on the second multi-breaker wiring branch 102 are opened and the circuit breaker S3 is closed; in this way, the purpose of series compensation of the first compensator 103 to the first transmission line 104 is achieved.
The contacts on the second multiple breaker connection branch 102 comprise, in order from the first busbar 105 to the second busbar 106: the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102, include:
when the first transmission line 104 is compensated in series, the circuit breakers between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 are closed, the circuit breakers between the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 and the contact point of the first bus 105 and the second multi-breaker wiring branch 102 are opened, and the circuit breakers between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the second bus 106 and the second multi-breaker wiring branch 102 are opened. For example, when series compensation is applied to a first transmission line 104, when the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is between the circuit breakers S2 and S3, then the circuit breakers S1 and S3 on the second multi-breaker wiring branch 102 are opened and the circuit breaker S2 is closed, and when the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is between the circuit breakers S3 and S4, the circuit breakers S2 and S4 on the second multi-breaker wiring branch 102 are opened and the circuit breaker S3 is closed; thus, the first compensator 103 achieves the purpose of series compensation to the first transmission line 104.
Fig. 2 is a schematic structural diagram of another wiring device in an embodiment of the present invention, as shown in fig. 2, the device further includes: a second transmission line 107; the second transmission line 107 is connected to the second multiple breaker connection leg 102; at least one circuit breaker is arranged between the connection point of the second transmission line 107 and the second multi-breaker connection branch 102, the connection point of the first transmission line 104 and the second multi-breaker connection branch 102, the connection point of the output end of the first compensator 103 and the second multi-breaker connection branch 102, and the connection points of the first bus 105, the second bus 106 and the second multi-breaker connection branch 102.
Here, the second multi-breaker connection branch 102 is formed by four breakers connected in series; specifically, the breaker is formed by connecting S1, S2, S3 and S4 in series. Wherein the contacts on the second multi-breaker wiring branch 102 comprise, in order from the first busbar 105 to the second busbar 106: the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, the junction between the second transmission line 107 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102;
or the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the second transmission line 107 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, the junction between the second transmission line 107 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102;
wherein the contacts on the second multi-breaker wiring branch 102 comprise, in order from the first busbar 105 to the second busbar 106: the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, the junction between the second transmission line 107 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102, comprising:
when the first transmission line 104 is compensated in series, a circuit breaker between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 is closed, and a circuit breaker between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the first bus 105 and the second multi-breaker wiring branch 102 is opened; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the second transmission line 107 and the second multi-breaker wiring branch 102 is open;
when the second transmission line 107 is compensated in series, a circuit breaker between the contact point of the second transmission line 107 and the second multi-breaker wiring branch 102 and the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 is closed, and a circuit breaker between the contact point of the second transmission line 107 and the second multi-breaker wiring branch 102 and the contact point of the second bus 106 and the second multi-breaker wiring branch 102 is opened; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is opened. For example, when the junction of the first transmission line 104 and the second multi-breaker connection branch 102 is between circuit breakers S1 and S2, the junction of the second transmission line 107 and the second multi-breaker connection branch 102 is between circuit breakers S3 and S4, the junction of the first compensator 103 and the second multi-breaker connection branch 102 is between circuit breakers S2 and S3, and the first transmission line 104 is compensated in series, then the circuit breakers S1 and S3 on the second multi-breaker connection branch 102 are opened and the circuit breaker S2 is closed; when the second transmission line 107 is series compensated, the circuit breakers S2 and S4 on the second multi-breaker wiring branch 102 are opened and the circuit breaker S3 is closed. By adopting the control mode, the purpose of switching the circuit without power failure can be realized.
The contacts on the second multiple breaker connection branch 102 comprise, in order from the first busbar 105 to the second busbar 106: the junction between the first busbar 105 and the second multi-breaker wiring branch 102, the junction between the second transmission line 107 and the second multi-breaker wiring branch 102, the junction between the first compensator 103 and the second multi-breaker wiring branch 102, the junction between the first transmission line 104 and the second multi-breaker wiring branch 102, and the junction between the second busbar 106 and the second multi-breaker wiring branch 102, comprising:
when the first transmission line 104 is compensated in series, a circuit breaker between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 is closed, and a circuit breaker between the contact point of the first transmission line 104 and the second multi-breaker wiring branch 102 and the contact point of the second bus 106 and the second multi-breaker wiring branch 102 is opened; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the second transmission line 107 and the second multi-breaker wiring branch 102 is open;
when the second transmission line 107 is compensated in series, a circuit breaker between the contact point of the second transmission line 107 and the second multi-breaker wiring branch 102 and the contact point of the first compensator 103 and the second multi-breaker wiring branch 102 is closed, and a circuit breaker between the contact point of the second transmission line 107 and the second multi-breaker wiring branch 102 and the contact point of the first bus 105 and the second multi-breaker wiring branch 102 is opened; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is opened. For example, when the junction of the first transmission line 104 and the second multi-breaker connection branch 102 is between circuit breakers S3 and S4, the junction of the second transmission line 107 and the second multi-breaker connection branch 102 is between circuit breakers S1 and S2, the junction of the first compensator 103 and the second multi-breaker connection branch 102 is between circuit breakers S2 and S3, and the first transmission line 104 is compensated in series, then the circuit breakers S2 and S4 on the second multi-breaker connection branch 102 are opened and the circuit breaker S3 is closed; when the second transmission line 107 is series compensated, the circuit breakers S1 and S3 on the second multi-breaker wiring branch 102 are opened and the circuit breaker S2 is closed. By adopting the control mode, the purpose of switching the circuit without power failure can be realized.
In the embodiment of the present invention, when the first bus 104 and the second bus 105 both operate normally, all the circuit breakers on the first multi-breaker wiring branch 101 are closed, so that the first compensator 103 can obtain electric energy from the first bus 105 and the second bus 106 through the first multi-breaker wiring branch 101; when the first bus 104 or the second bus 105 has a fault, the circuit breaker closest to the fault bus on the first multi-breaker wiring branch 101 is opened, and the other circuit breakers on the first multi-breaker wiring branch 101 are all closed. In this way, the first compensator 103 is controlled to be isolated from the faulty busbar by the first multi-breaker wiring branch 101.
In the embodiment of the present invention, when the first compensator 103 has a fault or the line does not need the series compensation, the circuit breaker closest to the contact point of the first compensator 103 and the first multi-circuit breaker connection branch 101 is disconnected; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the first transmission line 104 and the second multi-breaker wiring branch 102 is open; the circuit breaker between the junction of the first compensator 103 and the second multi-breaker wiring branch 102 and the junction of the second transmission line 107 and the second multi-breaker wiring branch 102 is open; the contacts of the first transmission line 104 and the second multi-breaker connection branch 102, the contacts of the second transmission line 107 and the second multi-breaker connection branch 102 and the breakers between the first busbar 105 and the second busbar 106 are closed. Thus, by the above control method, the first bus 105 and the second bus 106 can transmit power to the first power transmission line 104 and the second power transmission line 107. Therefore, the power failure phenomenon of the power transmission line caused by the element failure or active exit on the device can be avoided, and the reliability and the safety of the power transmission line are greatly improved.
In an embodiment of the present invention, the apparatus further includes: a series transformer T1, the first compensator 103 being connected to the first and second multi-breaker wiring branches 101, 102 through the series transformer T1; wherein,
the series transformer T1 is connected to a side winding of the first compensator 103, and is connected to the first compensator 103 by a star-type or an angle-type connection method, and the series transformer T1 is connected to a side winding of the transmission line, and is connected to the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102 by a split-phase series connection method.
Here, the star connection method is a method in which one end of a three-phase power winding or a load is connected together to form a neutral line, and three phase lines are led out from the other end. The angle type mode of connection means, with each phase power or load end to end in proper order to draw out every continuous point, as the three phase line of three-phase electricity, and, in the embodiment of the utility model, series transformer T1 is not restricted to bifilar, but contains a set of compensator side winding and line side winding at least.
Fig. 3 is a schematic diagram of star-shaped wiring of one side winding of the series transformer connected to the compensator according to the embodiment of the present invention; the specific star-shaped connection mode is shown in fig. 3, and one of three phase lines led out from the first compensator 103 is grounded, and the other two phase lines are respectively connected to the first multi-breaker connection branch 101 and the second multi-breaker connection branch 102. Series compensation is performed on the transmission line by controlling the circuit breakers on the second multi-breaker connection branch 102; the first compensator derives electrical energy from the first bus bar and/or the second bus bar by controlling the circuit breakers on said first multi-breaker connection branch 101.
In an embodiment of the present invention, the apparatus further includes: a bypass element (not shown) provided on the side of the series transformer T1 connecting the first and second multi-breaker connection branches 101, 102 for bypassing the first compensator 103 in case of a failure of the first compensator 103.
In an embodiment of the present invention, the apparatus further includes: a second compensator 108, said second compensator 108 being connected in series with said first compensator 103 and the output of said second compensator 108 being connected to said first multiple breaker connection branch 101 or to a breaker to which a third busbar is connected; and at least one circuit breaker is provided between the junction of the second compensator 108 with the first multi-breaker wiring branch 101 and the junction of the first busbar 105 or the second busbar 106 with the first multi-breaker wiring branch 102.
Here, the second compensator 108 may be connected to the first multi-breaker wiring branch 101 or to a breaker to which a third bus bar is connected, through a shunt transformer T2, and a contact position of the second compensator 108 with the first multi-breaker wiring branch 101 may be the same as or different from a contact position of the first compensator 103 with the first multi-breaker wiring branch 101, and is not limited in particular.
Fig. 4 is a schematic diagram of a wiring structure of the embodiment of the present invention in which other bus bars are connected to the parallel side; the second compensator 108 is connected to the breaker connected to the third bus in the configuration shown in fig. 4.
The device according to the embodiment of the present invention can also be expanded to multiple/multiple circuit application scenarios through combination, specifically as shown in fig. 5, a wiring schematic diagram of a double circuit is shown in fig. 5, wherein two groups of wiring structures are connected between the first bus 105 and the second bus 106, one of the two groups is the first multiple breaker wiring branch 101, the second multiple breaker wiring branch 102, the first compensator 103, the first transmission line 104 and the second transmission line 107; the other group is a first multi-breaker connection branch 101 ', a second multi-breaker connection branch 102 ', the first compensator 103 ', the first transmission line 104 ', and the second transmission line 107 ', and the two groups of connection structures are similar to the structures in fig. 1, fig. 2, and fig. 3, and the same description is omitted, and reference may be made to the description of fig. 1, fig. 2, and fig. 3, except that the two groups of connection structures may share one group of shunt transformer T2 and second compensator 108, and the connection structure of the shunt transformer T2 and the second compensator 108 may be referred to the description of fig. 3. The advantage of the connection structure shown in fig. 5 is that the first compensator 103 and the first compensator 103 ' can be respectively connected to the two sets of dual-circuit transmission lines 104, 104 ' and 107, 107 ' in a time-sharing manner, and can be switched with power, so that the flexibility, reliability and safety of connecting the FACTS to the power grid are improved, and the implementation manner is simple and flexible.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (16)
1. A wiring device, comprising: the circuit breaker comprises a first multi-breaker wiring branch formed by connecting at least two circuit breakers in series, a second multi-breaker wiring branch formed by connecting at least four circuit breakers in series, a first compensator and a first power transmission line; wherein,
the first multi-breaker wiring branch and the second multi-breaker wiring branch are respectively connected between the first bus and the second bus;
the first power transmission line is connected to the second multi-breaker wiring branch;
the output end of the first compensator is respectively connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch; at least one circuit breaker is arranged between the output end of the first compensator and the joint of the second multi-circuit breaker wiring branch circuit and the joint of the first transmission line and the second multi-circuit breaker wiring branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the joint of the second multi-circuit breaker wiring branch circuit and the joint of the first bus and the second multi-circuit breaker wiring branch circuit; at least one circuit breaker is arranged between the output end of the first compensator and the joint of the second multi-circuit breaker wiring branch circuit and the joint of the second bus and the second multi-circuit breaker wiring branch circuit; at least one circuit breaker is arranged between a connection point of the first power transmission line and the second multi-circuit breaker connection branch circuit and a connection point of the first bus and the second multi-circuit breaker connection branch circuit; at least one circuit breaker is arranged between the connection point of the first power transmission line and the second multi-circuit breaker connection branch circuit and the connection point of the second bus and the second multi-circuit breaker connection branch circuit;
at least one circuit breaker is arranged between the output end of the first compensator and the connection point of the first multi-circuit breaker connection branch circuit, and between the first bus and the connection point of the second bus and the first multi-circuit breaker connection branch circuit.
2. The device of claim 1, wherein the contacts on the second multi-breaker wiring branch, in order from the first busbar to the second busbar, comprise: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch;
or a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch.
3. The device of claim 2, wherein the contacts on the second multi-breaker wiring branch, in order from the first busbar to the second busbar, comprise: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch, comprising:
when the first power transmission line is subjected to series compensation, the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the first compensator and the second multi-breaker wiring branch are switched on, the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the first bus and the second multi-breaker wiring branch are switched off, and the circuit breakers between the connection point of the first compensator and the second multi-breaker wiring branch and the connection point of the second bus and the second multi-breaker wiring branch are switched off.
4. The device of claim 2, wherein the contacts on the second multi-breaker wiring branch, in order from the first busbar to the second busbar, comprise: a junction between the first busbar and the second multi-breaker wiring limb, a junction between the first compensator and the second multi-breaker wiring limb, a junction between the first transmission line and the second multi-breaker wiring limb and a junction between the second busbar and the second multi-breaker wiring limb, comprising:
when the first power transmission line is subjected to series compensation, the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the first compensator and the second multi-breaker wiring branch are switched on, the circuit breakers between the connection point of the first compensator and the second multi-breaker wiring branch and the connection point of the first bus and the second multi-breaker wiring branch are switched off, and the circuit breakers between the connection point of the first power transmission line and the second multi-breaker wiring branch and the connection point of the second bus and the second multi-breaker wiring branch are switched off.
5. The apparatus of claim 1, further comprising: a second transmission line;
the second transmission line is connected to the second multi-breaker wiring branch;
and at least one circuit breaker is arranged between the connection point of the second power transmission line and the second multi-circuit breaker connection branch, the connection point of the first power transmission line and the second multi-circuit breaker connection branch, the connection point of the output end of the first compensator and the second multi-circuit breaker connection branch, and the connection points of the first bus, the second bus and the second multi-circuit breaker connection branch.
6. The device according to claim 5, characterized in that said second multiple breaker connection branch is formed by four breakers connected in series;
and the direction of the contact points on the second multi-circuit breaker wiring branch from the first bus bar to the second bus bar sequentially comprises: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch;
or a junction between the first busbar and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch.
7. The device of claim 6, wherein the contacts on the second multi-breaker wiring branch, in order from the first busbar to the second busbar, comprise: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch, comprising:
when the first power transmission line is compensated in series, a circuit breaker between a contact of the first power transmission line and the second multi-breaker wiring branch and a circuit breaker between the first compensator and the contact of the second multi-breaker wiring branch are switched on, and a circuit breaker between a contact of the first power transmission line and the second multi-breaker wiring branch and a circuit breaker between the first bus and the contact of the second multi-breaker wiring branch are switched off; a circuit breaker between a junction of the first compensator and the second multi-breaker wiring branch and a junction of the second transmission line and the second multi-breaker wiring branch is opened;
when the second power transmission line is compensated in series, the circuit breakers between the connection point of the second power transmission line and the second multi-breaker wiring branch and the connection point of the first compensator and the second multi-breaker wiring branch are switched on, and the circuit breakers between the connection point of the second power transmission line and the second multi-breaker wiring branch and the connection point of the second bus and the second multi-breaker wiring branch are switched off; the first compensator is disconnected from the circuit breaker between the junction of the second multi-breaker wiring branch and the junction of the first transmission line and the second multi-breaker wiring branch.
8. The device of claim 6, wherein the contacts on the second multi-breaker wiring branch, in order from the first busbar to the second busbar, comprise: a junction between the first busbar and the second multi-breaker wiring branch, a junction between the second transmission line and the second multi-breaker wiring branch, a junction between the first compensator and the second multi-breaker wiring branch, a junction between the first transmission line and the second multi-breaker wiring branch, and a junction between the second busbar and the second multi-breaker wiring branch, comprising:
when the first power transmission line is compensated in series, the circuit breakers between the connection points of the first power transmission line and the second multi-breaker wiring branch and the connection points of the first compensator and the second multi-breaker wiring branch are switched on, and the circuit breakers between the connection points of the first power transmission line and the second multi-breaker wiring branch and the connection points of the second bus and the second multi-breaker wiring branch are switched off; a circuit breaker between a junction of the first compensator and the second multi-breaker wiring branch and a junction of the second transmission line and the second multi-breaker wiring branch is opened;
when the second power transmission line is compensated in series, the second power transmission line is connected with a circuit breaker between a contact of the second multi-circuit breaker wiring branch and a contact of the first compensator and the second multi-circuit breaker wiring branch; and the circuit breakers between the connection point of the second power transmission line and the second multi-circuit breaker connection branch and the connection point of the first bus and the second multi-circuit breaker connection branch are disconnected, and the circuit breakers between the connection point of the first compensator and the second multi-circuit breaker connection branch and the connection point of the first power transmission line and the second multi-circuit breaker connection branch are disconnected.
9. The device of claim 1, wherein when the first bus bar and the second bus bar are both operating properly, all circuit breakers on the first multi-breaker wiring branch are closed;
and when the first bus or the second bus has a fault, the circuit breaker closest to the fault bus on the first multi-circuit breaker wiring branch is disconnected.
10. The apparatus of claim 5, wherein upon failure of the first compensator, the first compensator opens the circuit breaker closest to the junction of the first multi-breaker wiring branch;
a circuit breaker between a junction of the first compensator and the second multi-breaker wiring branch and a junction of the first transmission line and the second multi-breaker wiring branch is opened;
the circuit breaker between the junction of the first compensator and the second multi-breaker wiring branch and the junction of the second transmission line and the second multi-breaker wiring branch is opened.
11. The apparatus of claim 1, further comprising: a series transformer through which the first compensator is connected with the first and second multi-breaker wiring branches; wherein,
the series transformer is connected with a winding on one side of the first compensator and is connected with the first compensator in a star or angle connection mode; the series transformer is connected with a winding on one side of the power transmission line and is connected with the first multi-circuit breaker wiring branch and the second multi-circuit breaker wiring branch in a split-phase series connection mode.
12. The apparatus of claim 11, further comprising: and the bypass element is arranged on one side of the series transformer, which is connected with the first multi-circuit breaker connection branch and the second multi-circuit breaker connection branch, and is used for performing bypass isolation on the first compensator when the first compensator fails.
13. The apparatus of claim 1, further comprising: a second compensator;
the second compensator is connected with the first compensator in series, and the output end of the second compensator is connected with the first multi-circuit breaker wiring branch or a circuit breaker connected with a third bus; and at least one circuit breaker is arranged between the junction of the second compensator and the first multi-circuit breaker wiring branch and the junction of the first bus or the second bus and the first multi-circuit breaker wiring branch.
14. The apparatus of claim 13, further comprising: a shunt transformer through which the second compensator is connected with the first multi-breaker wiring branch or a breaker connected with the third bus.
15. The device of claim 13, wherein the contact locations of the first compensator and the first multi-breaker wiring leg are the same or different from the contact locations of the second compensator and the first multi-breaker wiring leg.
16. The apparatus of claim 13, wherein the first compensator and the second compensator are each inverters.
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| CN201621061249.4U CN206323138U (en) | 2016-09-18 | 2016-09-18 | A kind of termination |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846008A (en) * | 2016-09-18 | 2018-03-27 | 国网江苏省电力公司经济技术研究院 | A kind of termination |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846008A (en) * | 2016-09-18 | 2018-03-27 | 国网江苏省电力公司经济技术研究院 | A kind of termination |
| CN107846008B (en) * | 2016-09-18 | 2024-06-25 | 国网江苏省电力公司经济技术研究院 | Wiring device |
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