Method for determining inactive compensation capacity network adaptability of wind power plant

A technology for compensating capacity and wind farms, applied in reactive power compensation, reactive power adjustment/elimination/compensation, wind power generation, etc., and can solve problems such as unreasonable reactive power capacity

Inactive Publication Date: 2013-01-30
内蒙古自治区电力科学研究院
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the reactive capacity calculated by the empirical formula is not reasonable enough, and provide a new calculation method for establishing the reactive po

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  • Method for determining inactive compensation capacity network adaptability of wind power plant

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Embodiment Construction

[0014] With reference to the accompanying drawings, the specific implementation of the method is as follows:

[0015] At the beginning of the calculation, it is first necessary to establish a simulated power grid composed of real data, including wind farms, box transformers, collector lines, step-up transformers, outgoing lines, and grid access, with PSD-BPA software as the core. Environmental model, this simulation model can not only reflect the real power grid environment, but also can be used as an infinite system. This simulation model is the main condition of calculation assessment, once established, it can be used repeatedly.

[0016] Afterwards, according to the actual power grid conditions and wind farm equipment parameters, the theoretical calculation of the compensation capacity is carried out, and a range of inductive and capacitive reactive power compensation capacity is determined. , Reactive power loss of step-up transformer and reactive power loss of sending li...

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Abstract

The invention discloses a method for determining the inactive compensation capacity network adaptability of a wind power plant and relates to power grid optimization analysis. Aiming at the situation that the conventional inactive capacity configuration of the wind power plant is not reasonable, the invention provides a new inactive capacity calculating method which comprises the following steps of: firstly, establishing a power grid simulation mode which is composed of a wind power plant, a box transformer substation, a current collection line, a boost transformer substation, an outgoing line and an accessing power grid system; secondly, determining an inactive configuration capacity change range by adopting the conventional theoretical calculating method; carrying out a closed loop test on a compensation capacity range value determined by using the conventional theoretical calculating method through using a simulation system so as to determine the sensitivity (of the wind power plant) to be compensated and the capacitive inactive compensation capacity (of the wind power plant) to be compensated; and introducing the sensitivity and the capacitive inactive compensation capacity into a simulation power grid model, and verifying a steady trend, a dynamic voltage fluctuation and a transient stability so as to obtain adaptive network inactive compensation configuration capacity and corresponding equipment technical requirements, thus ensuring that the inactive compensation capacity of the wind power plant can be effectively used for the inactive configuration of the wind power plant.

Description

technical field [0001] The invention relates to the field of network optimization analysis, in particular to reactive power compensation and optimal configuration therein. Background technique [0002] The requirements of the international situation of environmental protection and low carbon have promoted the rapid growth of wind power installed capacity, and the proportion of the total installed capacity of the power grid has continued to increase. It is unreasonable, and will have a certain negative impact on the safe and stable operation of the power grid, resulting in fluctuations in the voltage of the wind farm and overall instability. In view of the fact that the capacitive reactive power capacity of wind farms is generally calculated according to the empirical formula and configured according to the following principles, that is, the variable-speed constant-frequency double-fed wind turbine is configured according to 25% of the main variable capacity, and the constant...

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E10/763Y02E40/30Y02E10/76
Inventor 程晓磊郭厚静邓昆玲张爱军孟庆天
Owner 内蒙古自治区电力科学研究院
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