Electric power system dynamic reactive power optimization configuration method and system
A power system, optimized configuration technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation and other directions, can solve problems such as voltage collapse, system voltage quality deterioration, investment waste, etc., to achieve the effect of improving voltage stability
Active Publication Date: 2016-08-31
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology
On the one hand, insufficient reactive power will lead to a decrease in system voltage, unreasonable use of electrical equipment, and even a series of accidents such as voltage collapse; on the other hand, excessive reactive power will cause unnecessary waste of investment, and even lead to system voltage Quality deterioration, jeopardizing the safety of systems and equipment
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[0023] A dynamic reactive power optimization configuration method for a power system, such as figure 1 shown, including the following steps:
[0024] Step S110: Receive basic grid data of the power system. The basic data of the power grid includes the type of fault and the parameters of the nodes. Specifically, the node may be a substation, etc., and the parameters of the node may include the type, number, and name of each node. The form of node selection is variable, specifically, it can be to select the key nodes to be observed according to the user's needs, or it can be to obtain all the nodes of the power system. In addition, the grid basic data can also include the location of various types of faults. It can be understood that, according to different actual needs, the grid basic data may also include other grid data. Collect and organize the basic data of the power grid, and clarify the input data that needs to be adjusted to facilitate subsequent data processing.
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The invention relates to an electric power system dynamic reactive power optimization configuration method and system. Time domain simulation analysis is performed on each node based on power grid basic data. The transient voltage stability evaluation index of an electric power system is calculated according to the simulation result so that the voltage qualified rate of the electric power system can be obtained. When the voltage qualified rate is less than a preset qualified threshold, candidate nodes are extracted and reactive power compensation sensitivity is calculated. Dynamic reactive power compensation capacity of the corresponding candidate nodes is increased according to the reactive power compensation sensitivity until the voltage qualified rate reaches the preset qualified threshold, and finally an optimal reactive power compensation capacity scheme of the electric power system is obtained and outputted. The dynamic characteristics of the system under the condition of different faults are analyzed through the sensitivity, and dynamic reactive power optimization configuration is realized according to the reasonable criterion and index so that the dynamic reactive power installing position and the capacity size of the electric power system can be automatically calculated, voltage coordination control under the situation of complex reactive power configuration of the power grid can be systematically guided, and voltage stability of the electric power system can be enhanced.
Description
technical field [0001] The invention relates to the technical field of power grids, in particular to a dynamic reactive power optimization configuration method and system for a power system. Background technique [0002] The distribution network is the end link of electric energy allocation. It has the characteristics of wide coverage area, dense lines and loads. Its power quality and operation safety are not only directly related to the economic benefits of the majority of users and power companies, but also an important manifestation of social benefits. [0003] The distribution of reactive power in the power system directly affects the safety and stability of the power system. On the one hand, insufficient reactive power will lead to a decrease in system voltage, unreasonable use of electrical equipment, and even a series of accidents such as voltage collapse; on the other hand, excessive reactive power will cause unnecessary waste of investment, and even lead to system v...
Claims
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Login to View More IPC IPC(8): H02J3/18
CPCY02E40/30H02J3/18
Inventor 王珂叶萌熊文王斐赵宏伟
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD