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Power system operation state simulation method and power system operation state simulation system

A power system and operating state technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as low accuracy of simulation results and long sample time period

Active Publication Date: 2016-01-06
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0004] Based on this, it is necessary to solve the problems of low accuracy of simulation results and long time period of sample generation, and provide a power system operation state simulation method and system suitable for the actual operation state of the power system and shorten the time period of sample generation.

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  • Power system operation state simulation method and power system operation state simulation system
  • Power system operation state simulation method and power system operation state simulation system
  • Power system operation state simulation method and power system operation state simulation system

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Embodiment Construction

[0027] see figure 1 , providing a power system operating state simulation method of an embodiment, comprising the following steps:

[0028] S100: Obtain historical data of the operating state of the power system.

[0029] S200: Obtain a probability distribution curve of a random variable in the power system according to historical data.

[0030] Among them, the random variables include the generator active output of the generator, the generator voltage of the generator, and the active load of the load node. The active output of the generator is the active power of the generator, and the generator voltage is the output voltage of the generator. The generator supplies power to the load node through the output electric energy, and the load node consumes the active power output by the generator, and the active load of the load node is the active power consumed by the load node. For example, in the power system, power distribution is carried out through the distribution network, ...

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Abstract

The invention relates to a power system operation state simulation method and a power system operation state simulation system. The method comprises the following steps of: performing statistical analysis on the basis of historical data of the operation state of a power system; obtaining probability distribution curves of three kinds of random variables including the power generator active power output, the power generator voltage and the active load of a load node of a power generator; and using a clustering analysis method for respectively clustering the probability distribution curves with similar distribution in the three kinds of random variables. The dimension reduction goal is achieved; the time period for generating mass power network operation state simulation samples can be greatly shortened; and the efficiency is improved. The clustering probability distribution curves subjected to clustering merging dimension reduction are sampled; the power flow distribution is subjected to simulation calculation; a power network operation state simulation sample is obtained; the obtained power network operation state simulation sample is similar to the power network actual operation state; the problem of low precision of the calculation result due to random sampling of each random variable in a designated range in the existing method is effectively solved; and the precision of the power flow distribution calculation result can be effectively improved.

Description

technical field [0001] The invention relates to the electrical field, in particular to a method and system for simulating the operating state of a power system. Background technique [0002] In the actual operation of the power system, operators generally analyze the safety and stability of the power system to ensure the safe and stable operation of the power system. However, with the continuous expansion of the scale of the power system and the large-scale intermittent new energy represented by wind power connected to the power system, the time-varying and complex operation status of the power system is increasing, which requires more comprehensive and credible massive power. The system operation status is used to analyze the safety and stability of the power system. [0003] There are some deficiencies in the existing massive power system operating state simulation methods. For example, since each random variable is randomly sampled within a specified range, the sampling ...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 郭文鑫孙宏斌王彬郭庆来温柏坚余志文黄天恩刘林
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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