Section active control strategy analysis method for online stability margin evaluation

A technology of control strategy and stability margin, applied in the field of power grid online simulation analysis, can solve problems such as changes in power grid operation mode

Active Publication Date: 2016-05-11
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0005] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a section active power control strategy analysis method for online stability margin evaluation, which is used to solve the existing online stability margin evaluation function that relies more on The problem that dispatching experts cannot adapt to changes in power grid operation mode due to offline calculation experience

Method used

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  • Section active control strategy analysis method for online stability margin evaluation
  • Section active control strategy analysis method for online stability margin evaluation
  • Section active control strategy analysis method for online stability margin evaluation

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Embodiment

[0121] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0122] According to the above method, the power control strategy of an important transmission section in the power grid is optimized and analyzed with an actual system as a verification model. The installed capacity of the power grid at the sending end of the section is about 22073MW, and the transmission section C EX The initial power is 706.26MW. After adjustment, the power of the transmission section increases to 2483.20MW, as shown in Table 1. After analysis and calculation, considering the start-up mode of the power grid at the sending and receiving end, network topology and system power balance, the transmission section C is given EX active power control strategy,

[0123] As shown in table 2.

[0124] Table 1 Transmission Section C EX Active power control result

[0125] serial number

Cross-section branch name ...

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Abstract

The invention relates to a section active control strategy analysis method for online stability margin evaluation. The method comprises following steps: determining power distribution section compositions, online state evaluation data and an adjusting and managing range, carrying out network topology analysis, automatically generating section sending end region, section receiving end region and control generator set; calculating the sensitivity of each section branch through using direct current load flow according to online stability margin evaluation rational and safe rules, generating a section active comprehensive sensitivity; screening the section control generator set according to the value of the comprehensive sensitivity, through comprehensively considering the actual output, the operation state and the adjustable output upper limit constraint conditions of a generator, searching to generate a sending end adjustable generator set and a receiving end adjustable generator set; calculating the power adjusting amount of an adjustable generator and generating the section active control strategy for online stability margin evaluation. According to the method of the invention, the problem that the existing online stability margin evaluation functions depend more on dispatching the off-line calculating experiences of specialists and cannot carry out self-adaption to the changes of the operation modes of a power grid is solved.

Description

technical field [0001] The invention relates to an analysis method in the technical field of power grid online simulation analysis, in particular to a section active power control strategy analysis method for online stability margin evaluation. Background technique [0002] The power of the key transmission section is the operation data that dispatchers are most concerned about, and it is also an important means to control the stability of the operation mode. The closeness between the actual power of the transmission section and the stability limit power directly reflects the stability level of the system, and the transmission limit of the transmission section is solved online It is of great significance to measure the stability of the system and tap the potential of power transmission. The transmission limit of the transmission section is the maximum power transmission capacity of the power system on the specified transmission path without violating thermal overload, node v...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/06G06Q50/06H02J3/00
CPCG06Q10/063G06Q10/06315G06Q50/06G06F30/20H02J3/00H02J2203/20Y02E40/70Y04S10/50
Inventor 谢昶顾雨嘉鲁广明田蓓吕颖李旭涛牛琳琳高峰李伟严剑峰于之虹史东宇解梅戴红阳江兴凌康建东邱健陆俊刘宇星
Owner CHINA ELECTRIC POWER RES INST
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