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A distributed static series compensator control system and its control method

A series compensation and control system technology, applied in the same frequency AC network with different sources, etc., can solve the problem of low operating efficiency

Active Publication Date: 2019-11-22
XJ ELECTRIC +3
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  • Description
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Problems solved by technology

[0009] The purpose of the present invention is to provide a distributed static series compensator control system and its control method, which is used to solve the problem of low operating efficiency caused by simultaneously investing multiple distributed static series compensators

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  • A distributed static series compensator control system and its control method
  • A distributed static series compensator control system and its control method
  • A distributed static series compensator control system and its control method

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] The present invention provides a distributed static series compensator control system, its structural diagram is as follows figure 1 As shown, it includes system-level controllers and device-level controllers, where each line is equipped with a system-level controller, and the system-level controller is installed in the substation; each distributed static series compensator (DSSC) in the line ) configure a device-level controller, and install the device-level controller in each DSSC device. Among them, the system-level controller is used to receive the power system dispatching instruction, and select the DSSC compensation mode according to the dispatching instruction, control the switching on and off of multiple DSSCs on the line in...

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Abstract

The invention relates to a distributed static series compensator control system and control method thereof. The control method comprises the steps of selecting a compensation mode of each distributedstatic series compensator in a circuit according to an electric power system dispatching instrument and a circuit operating state monitoring result; and in the selected compensation mode, calculatingthe total compensation voltage needed to be output by the distributed static series compensator in the circuit, and then further determining the number of the distributed static series compensators needed to be input in the circuit so as to enable the output voltage of each distributed static series compensator to be not lower than a voltage threshold value. According to the control method, the compensation mode of each distributed static series compensator in the circuit is determined according to the electric power system dispatching instrument; in the determined compensation mode, the number of the distributed static series compensators needed to be input is determined, so that the output voltage of each distributed static series compensator is greater than the voltage threshold value;and therefore, the operating efficiency of each distributed static series compensator is improved effectively.

Description

technical field [0001] The invention relates to a distributed static series compensator control system and a control method thereof, belonging to the technical field of flexible alternating current transmission. Background technique [0002] With the continuous increase of electricity demand, the load of the power system is increasing day by day, and the capacity of the transmission line of the existing grid structure is limited, which causes the power flow of some lines to often exceed its thermal capacity limit, thereby limiting the power transmission capacity of the system. The traditional method to improve the transmission capacity of the entire system is to add transmission lines. However, building new lines takes a long time and costs a lot. Therefore, it is more sensible to use flexible AC transmission system (FACTS) to adjust the power flow distribution of lines, and use more An economical way to solve the above problems. [0003] FACTS equipment can adjust the powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 刘永慧吴金龙王先为李道洋杨美娟张军张浩胡丁文
Owner XJ ELECTRIC
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