Load shedding method and system for safety automatic device based GOOSE information

A technology of safety automatic and knife switch, applied in information technology support systems, circuit devices, electrical components, etc., can solve the problems of the correctness and reliability of safety automatic devices, the difficulty of ensuring correctness, and the risk of major misoperations, etc., to achieve The effect of avoiding the risk of unintended load shedding and ensuring correctness and reliability

Active Publication Date: 2015-05-20
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] ①Inconsistency between the operation and the actual operation is likely to occur during operation, for example: the operating operator puts in / out the pressing plate first, and then completes the switching operation, or the operating operator completes the switching operation first, and then puts in / out the pressing plate
[0007] ② There is a large risk of misoperation, such as: missing to cast and return the pressure plate, missing to change the fixed value, etc., which will seriously affect the correctness and reliability of the safety automatic device
[0008] In summary, the load shedding scheme of conventional substation safety automatic devices is difficult to guarantee correctness and low reliability

Method used

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  • Load shedding method and system for safety automatic device based GOOSE information
  • Load shedding method and system for safety automatic device based GOOSE information
  • Load shedding method and system for safety automatic device based GOOSE information

Examples

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example 1

[0065] by figure 2 As an example, figure 2 It is a schematic diagram of the operation mode of the main wiring combined with the mother of the substation. An example of a load shedding method for a safety automatic device based on GOOSE information is as follows:

[0066] Step S201: Obtain real-time circuit information of the main wiring of the substation through the GOOSE network.

[0067] According to the above circuit information, the opening and closing information of the switch on the high-voltage side of the main transformer, the first knife switch, the second knife switch, and the third knife switch, and the switch on the low-voltage side of the main transformer, the first knife switch, and the second knife switch are extracted. , the opening and closing information of the third knife switch, the opening and closing information of the bus tie switch, the first knife switch and the second knife switch of the low-voltage side bus, and the switches of each load unit, th...

example 2

[0087] by image 3 As an example, image 3 It is a schematic diagram of the operation mode of the main wiring denominator of the substation. An example of a load shedding method for a safety automatic device based on GOOSE information is as follows:

[0088] Step S301: Obtain real-time circuit information of the main wiring of the substation through the GOOSE network.

[0089] According to the above circuit information, the opening and closing information of the switch on the high voltage side of the main transformer, the first knife switch, the second knife switch, and the third knife switch, the switching information of the switch on the low voltage side of the main transformer, the first knife switch, and the second knife switch can be extracted. switch, the opening and closing information of the third switch, the opening and closing information of the bus tie switch, the first switch and the second switch of the low-voltage side busbar, and the switches of each load unit...

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Abstract

The invention provides a load shedding method and system for a safety automatic device based GOOSE information. The method comprises the following steps: controlling the safety automatic device to acquire the real-time circuit information of a main wiring of a transformation station via a GOOSE network; determining electric regions to which low-voltage side buses, main transformers and load units belong respectively in the transformation station according to the circuit information; adjusting load units adjusted and removed in each load shedding strategy of the safety automatic device according to the electric regions to which the low-voltage side buses, the main transformers and the load units belong. According to the scheme of the invention, automatic adjustment of the load shedding strategy of the safety automatic device for a digital transformer station can be realized, the risk of wrong load removal of the safety automatic device is avoided, and the correctness and reliability of the strategy of the safety automatic device are effectively ensured.

Description

technical field [0001] The invention relates to the technical field of electric power system and automation, in particular to a load shedding method and system of a safety automatic device based on GOOSE information. Background technique [0002] In the operation of the power system, there are mainly two operation modes of busbar closing and busbar separation in substations. When the substation is in the busbar closed-loop operation mode, the load units in the substation are in the same electrical area as the main transformers and busbars. At this time, the main transformer overcurrent load shedding strategy of the safety automatic device, the busbar low frequency load shedding strategy and the busbar low voltage load shedding strategy Strategic removal of any load unit can help solve the corresponding security and stability problems. [0003] However, when the substation is in the busbar separation operation mode, the load units in the substation are not in the same electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02E60/00Y04S10/16
Inventor 陈兴华魏宏陈锦昌杨文佳吴国炳李新超袁泉
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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