Calculation method for reactive power optimization of interconnected grid based on non-topological equivalence method
A technology for interconnecting power grids and optimizing computing, applied in computing, electrical digital data processing, data processing applications, etc., and can solve problems such as inability to obtain
Inactive Publication Date: 2019-08-06
CHONGQING UNIV
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[0004] The purpose of the present invention is to provide a reactive power optimization calculation method based on the non-topological method equivalent for the existing interconnected grid reactive power optimization. The measurement information at the node performs equivalent processing on the external network information, which effectively solves the reactive power optimization calculation problem of the interconnected grid when the external network information is unknown, and at the same time ensures the accuracy of the reactive power optimization calculation
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[0065] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.
[0066] Such as figure 2 The IEEE39 node internal and external network division diagram shown, the specific steps of the reactive power optimization calculation method of the interconnected grid based on the non-topological equivalent method are as follows:
[0067] 1) Determine the number of m moments
[0068] According to the number of ports connected to the internal and external networks, the time required to solve the equivalent network parameters is de...
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The invention discloses an interconnected power network reactive power optimization computation method based on non-topological method equivalence. Data such as voltage and power at boundary nodes is input first through a computer via a program, external network equivalence network parameters are solved according to a non-topological equivalence method, then a reactive power optimization model of an interconnected power network is established, and reactive power optimization computation is conducted according to an interior point method. According to the method, when real-time synchronous data of an external network can not be acquired, comprehensive information of the external network is kept in an equivalent network according to the external network equivalence method considering element comprehensiveness, and therefore the reactive power optimization precision is improved. By means of the established element comprehensiveness external network equivalent network, the power transfer relation between the boundary nodes is kept, and the reactive voltage supporting capability of the external network to an internal network can be precisely reflected, so that the reactive power optimization precision is guaranteed.
Description
technical field [0001] The invention belongs to the field of reactive power optimization calculation of electric power systems, and in particular relates to a reactive power optimization calculation method for an interconnected power grid without real-time synchronization data of the whole network. Background technique [0002] With the vigorous development of new energy, in order to rationally allocate resources, the modern power system has developed into a large system with closely interconnected and complex subnetworks, and the interaction and influence between subnetworks have also been further enhanced. It is necessary to consider the influence of closely connected adjacent subnetworks when making steady-state analysis and decision-making for each intranet. In order to ensure the accuracy of the reactive power optimization calculation of the interconnected grid, it is necessary to consider the impact of the external network on the internal network. However, due to the ...
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IPC IPC(8): G06F17/50
CPCG06Q10/04G06Q50/06
Inventor 余娟代伟赵霞颜伟刘珏麟
Owner CHONGQING UNIV