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Optimal dispatching method of power system considering the uncertainty of combined generation on the generating side

A combined power generation and uncertainty technology, applied in wind power generation, system integration technology, information technology support system, etc.

Active Publication Date: 2020-09-11
STATE GRID ZHEJIANG ELECTRIC POWER +3
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  • Claims
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Problems solved by technology

This uncertainty can lead to additional system operating costs to balance power system generation and demand

Method used

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  • Optimal dispatching method of power system considering the uncertainty of combined generation on the generating side
  • Optimal dispatching method of power system considering the uncertainty of combined generation on the generating side
  • Optimal dispatching method of power system considering the uncertainty of combined generation on the generating side

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Embodiment Construction

[0113] Further description will be given below in conjunction with the embodiments and accompanying drawings.

[0114] The embodiment that handles according to the complete method of content of the present invention is as follows:

[0115] A 3-node simple system is adopted, the system includes G=1 traditional thermal power unit, 1 wind farm, N B = 3 lines, the average output of traditional thermal power units is 50MW, and the installed capacity of wind farms is 50MW. Then, g=1.

[0116] (1) The total power generation of the wind farm is divided into N = 2 types of wind power generation, and the proportional vector of each type of wind power generation to the total wind power generation is expressed as ω=(ω 1 , ω 2 )T . Covariance σ between each type of wind power generation 12 =0. If the system compensates the amount of wind power generated by the first category r 1 Subject to N(0.067,0.1 2 ) Gaussian distribution, the compensation expectation value of the system for t...

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Abstract

The invention discloses an electric system optimizing dispatching method considering uncertainty of power generation of power generating side combination. The method includes steps of processing to obtain a first probability density function and normalizing a second probability density function; processing to obtain a wind power multi-state model containing a wind power combined state value and awind power force output combination state probability; processing to obtain a probability density function with traditional power generator power output uncertainty caused by the combined power generation of a traditional thermal power generating unit; processing to obtain all unit force output combined state values of a power generating side and force output combined state probability; inputtingan optimal tidy flow model to solve the model and acquire the power generating power value; calculating the expectation values of a traditional thermal power generating unit and the power generating power of a wind power plant under all states. The invention considers the force output uncertainty caused by active behavior of combined power generation of a power generating side in a real-time dispatching, and contains initiatives of the traditional power generating unit and the wind power plant; the electric system optimizing dispatching method can make dispatchers acquire more accurate systemdispatching result conveniently while reduce the running cost of an electric system.

Description

technical field [0001] The invention relates to a power system scheduling method, in particular to a power system optimal scheduling method considering the uncertainty of combined power generation at the power generation side. Background technique [0002] Energy is indispensable for the survival and development of human society. In order to alleviate the global energy crisis and the increasingly serious environmental pollution, renewable energy is booming. As a clean and renewable energy, wind energy has attracted more and more attention from all over the world. In 2016, the global installed capacity of wind power was 486,790MW. In some countries, the share of future wind power generation will be huge, for example, 50% of electricity consumption in Denmark will come from wind power in 2020. [0003] As the penetration rate of wind power gradually increases, wind farms gradually participate in the electricity market like traditional thermal power units. Existing studies ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02J3/38G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06312G06Q50/06H02J3/386H02J3/46H02J2203/20Y02E10/76Y02E40/70Y04S10/50
Inventor 陈锡祥林优夏翔方建亮姜巍杜振东何英静沈舒仪尚楠丁一王曦冉但扬清李帆周林
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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