Quick starting and vector calculation method for intelligent substation integrated protection

A smart substation and quick start technology, applied in the direction of measuring electrical variables, emergency protection circuit devices, measuring devices, etc., can solve problems such as unsatisfactory integrated protection, achieve the effects of reducing calculation amount, avoiding protection misoperation, and improving rapidity

Active Publication Date: 2012-10-31
TSINGHUA UNIV +3
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Problems solved by technology

The traditional relay protection system uses full-cycle or half-cycle Fourier as the phasor calculation method, and judges the start based on the results of Fourier calculation. This method cannot meet the requirements of integrated protection.

Method used

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  • Quick starting and vector calculation method for intelligent substation integrated protection
  • Quick starting and vector calculation method for intelligent substation integrated protection
  • Quick starting and vector calculation method for intelligent substation integrated protection

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Embodiment Construction

[0021] A quick start and phasor calculation method for intelligent substation integrated protection proposed by the present invention is described in detail in conjunction with the accompanying drawings and embodiments as follows:

[0022] The quick start and phasor calculation method of the intelligent substation integrated protection of the present invention are as follows: figure 1 As shown, the integrated protection can protect multiple objects in the substation, that is, multiple protected objects 1, 2...m, m is the maximum number of protected objects in the integrated protection of the smart substation; , quick start-up and phasor calculation processing must be carried out, and there is a serial relationship between the start-up and phasor calculation processing of each protected object; the method includes the following steps:

[0023] Step 1) Perform quick start and phasor calculation for the protected object 1;

[0024] Step 2) Judging the protected object 1 and perf...

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Abstract

The invention relates to a quick starting and vector calculation method for intelligent substation integrated protection, which belongs to the technical field of electric system protection and control. The method comprises the following steps: carrying out quick starting and vector calculation for a protection object 1; judging whether the protection object 1 carries out secondary starting or not, if so, carrying out protection processing according to the result of the vector calculation, judging whether faults occur, and taking corresponding measurements, otherwise, carrying out the quick starting and the vector calculation for a protection object 2; and in such a way, carrying out the quick starting and the vector calculation for a protection object m, and judging whether the protection object m carries out secondary starting or not, if so, carrying out protection processing, otherwise, terminating the quick starting and vector calculation. According to the quick starting and vector calculation method, the CPU resource can be flexibly utilized, so as to achieve an effect that an integrated protection platform has better stability, reliability, openness, scalability and maintainability.

Description

technical field [0001] The invention belongs to the technical field of power system protection and control, and in particular relates to a start-up and phasor calculation method for integrated protection of intelligent substations. Background technique [0002] With the promulgation of the IEC61850 standard and the development and application of digital technology, smart substations have been rapidly promoted and constructed. The new characteristics of smart substations such as data collection digitization, information interaction networking, information application integration, and intelligent equipment operation have not only brought about changes in the realization of data communication and protection trips in power system relay protection, but also brought about changes in the implementation of power system relay protection. The development of relay protection methods has opened up a new direction - integrated protection. [0003] Integrated protection concentrates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22G01R19/00
Inventor 董新洲王宾曹润彬许飞
Owner TSINGHUA UNIV
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