A grid planning method suitable for power systems considering the stochastic characteristics of wind power
A technology for power grid planning and power system, applied in the direction of instrument, data processing application, calculation, etc., can solve problems such as difficulty in solving, large amount of calculation, complex model, etc.
Active Publication Date: 2016-06-29
GUANGXI UNIV
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[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a power grid planning method suitable for power systems considering the random characteristics of wind power. The power grid planning model is converted into a deterministic model, and the model is solved by using the outer approximation method, thus solving the technical problems of complex models, difficult solutions, and large amounts of calculations in grid planning problems considering wind power
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[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0017] Based on the statistics of wind power output characteristics, the present invention selects the limit values of wind turbines, uses Taguchi Orthogonal Array to provide good statistical information with fewer scenarios, and generates limit scenarios from all possible scenarios, taking into account wind power The uncertain grid planning model is transformed into a deterministic model. Th...
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The invention discloses an electric power system power network planning method suitable for taking the wind power random characteristic into account includes the steps that a power network planning model taking wind power into account is constructed, limit scenes of random variable wind power output and loads are acquired, H test scenes of all the limit scenes of the output and the loads of a fan are acquired according to a Taguchi orthogonal table, variables in the Taguchi orthogonal table are horizontally converted into respective corresponding horizontal values, the horizontal value of each variable in each test scene is substituted into the power network planning model, and thus H sets of deterministic formulae are obtained; the H set of deterministic formulae are solved with an outer approximation algorithm in the MINLP problem, and then the final power network planning scheme is obtained. On the basis of obtaining the wind power output probability characteristic, the wind power output limit value is selected, the constructed model is solved through the outer approximation algorithm based on the Taguchi orthogonal table, then the electric power system power network planning method suitable for taking the wind power random characteristic into account is obtained, and thus it can be guaranteed that an electric power system can adapt to the randomness of wind power.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, and more specifically relates to a grid planning method suitable for power systems considering the random characteristics of wind power. Background technique [0002] Due to the depletion of non-renewable energy sources such as coal and oil and the serious pollution to the environment, all countries in the world are striving to find an economical, environmentally friendly and reliable new energy source. Wind power has attracted worldwide attention due to its non-polluting and renewable characteristics. However, wind power output has volatility, randomness, and low adjustability. The continuous integration of wind power into the grid has brought new challenges to the safe and stable operation of the power system and also brought difficulties to grid planning. Conventional power grid planning methods are based on a definite power structure and load level, and cannot cope with the ran...
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IPC IPC(8): G06Q50/06
Inventor 黎静华兰飞曾炎韦化
Owner GUANGXI UNIV