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Transmission, site selection and constant-volume unified optimization method considering load randomness of wind power plant group

A wind farm group and joint optimization technology, applied to wind power generation, electrical components, circuit devices, etc., can solve problems such as the impact of load randomness and economics without considering the impact of load randomness, and achieve increased net income, reasonable planning, and effective use of wind resources Effect

Active Publication Date: 2019-03-08
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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Problems solved by technology

[0004] In the existing research, only the influence of the location of the central substation on the net income sent by the multi-wind farm group is considered, and the influence of load randomness on the economics of the wind farm group's external transmission and transmission project is not considered

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  • Transmission, site selection and constant-volume unified optimization method considering load randomness of wind power plant group
  • Transmission, site selection and constant-volume unified optimization method considering load randomness of wind power plant group
  • Transmission, site selection and constant-volume unified optimization method considering load randomness of wind power plant group

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Embodiment Construction

[0043] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0044] The present invention provides a joint optimization method for site selection and capacity determination of wind farm group outbound delivery considering load randomness, which specifically includes the following steps:

[0045] Step S1: Obtain the output time series of each wind farm in the wind farm group;

[0046] Step S2: Sampling the load using the Latin hypercube sampling technique;

[0047] Step S3: Consider comprehensively the power transmission income of the power grid and the construction cost of high-voltage and low-voltage side transmission projects, and construct a joint optimization model for central substation positioning and transmission capacity allocation that can reflect the net income of wind farm group external transmission and transmission projects, and its objective function is wind farm group external transm...

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Abstract

The invention relates to a transmission, site selection and constant-volume unified optimization method considering load randomness of a wind power plant group. The unified optimization method comprises the steps of acquiring a contribution time sequence of each wind power plant of the wind power plant group; sampling a load by a Latin Hypercube sampling technology according to the randomness of the load; building a central substation positioning and power transmission capacity configuration unified optimization model capable of reflecting net yield of power transmission engineering of the wind power plant group according to power grid power transmission benefit and construction cost of a high- and low-voltage side power transmission engineering, wherein a target function is maximum net yield of the power transmission engineering of the wind power plant group; and acquiring a power transmission engineering optimization model of the wind power plant group, and obtaining a position of acentral substation, optimal outgoing line capacity from the wind power plant to the central substation and optimal power transmission capacity from the central substation and a power system. By implementing the method, the power transmission engineering of the wind power plant group is favorably and reasonably planned.

Description

technical field [0001] The invention relates to the field of power grid planning, in particular to a combined optimization method for wind farm group external transmission site selection and capacity determination considering load randomness. Background technique [0002] Wind power has the characteristics of output fluctuations and low energy density. With the increase of the aggregation scale of wind farm groups, the equivalent annual utilization hours of wind farms are usually around 2000h. If the capacity configuration of the outgoing transmission line of the wind farm group is high, it will cause redundancy of the transmission capacity in most of the time period and reduce the operation efficiency; while the configuration of the outgoing transmission capacity is too low, it may cause serious wind curtailment losses. [0003] In order to optimize wind power transmission, rationally utilize power transmission projects, and reduce line losses, the output of each wind farm ...

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/386H02J2203/20Y02E10/76
Inventor 叶荣唐雨晨蒋朋博林章岁江岳文王怀远温步瀛
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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