Parallel computing method for short-circuit currents of high voltage power grids of coal mines
A short-circuit current and parallel computing technology, which is applied in computing, computer-aided design, design optimization/simulation, etc., can solve problems such as large time overhead and high time complexity
Active Publication Date: 2017-05-24
HENAN POLYTECHNIC UNIV
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The topology analysis model constructed by this method has a clear structure and strong scalability, and can better realize the automatic short-circuit calculation function of the mine high-voltage power grid; The complexity is high, and the time cost is high. In order to complete the automatic short-circuit calculation of the mine high-voltage power grid based on the correlation matrix with less time cost, the present invention proposes a parallel calculation method for the short-circuit current of the coal mine high-voltage power grid. The method is based on the mine high-voltage power supply System structure characteristics, make full use of parallel computing technology to realize parallel computing of short-circuit current in coal mine high-voltage power grid
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[0037] in the attached figure 1 In the diagram of the coal mine high-voltage power supply system shown, the branch nodes filled with black are in the open state, and the unfilled branch nodes are in the closed state; the power branch nodes are X1, Y1, Z1; the contact switch nodes are in the Opening.
[0038] in the attached figure 1 In the diagram of the coal mine high-voltage power supply system shown, there are three power supply branch nodes. Starting from the coal mine high-voltage power supply system power supply branch node, the coal mine high-voltage power supply system branch nodes are divided into three sets. Each branch For node collection express, ; Add all power supply branch nodes whose switch state is closed in the coal mine high-voltage power supply system to the set middle, ;gather Corresponding set of branch nodes They are: , , ; Each set of branch nodes The node number of the middle branch is attached figure 1 shown.
[0039] in the att...
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The invention discloses a parallel computing method for short-circuit currents of high voltage power grids of coal mines, which comprises the following steps that all branch nodes are divided into n sets by taking the power branch node as a starting point; according to each branch node set of S i which is obtained and the first-come-first-served dispatching principle, parallel network topology analysis is respectively carried out on every set of S i on the basis of correlation matrix and the corresponding final power supply correlation matrix of E i is obtained; the final power supply correlation matrix of E of a whole high voltage power supply system is generated according to all the matrices of E i which are obtained; according to the obtained set of D S of the branch node and the first-come-first-served dispatching principle, parallel computing of the short-circuit currents corresponding to every branch node is completed on the basis of the correlation matrix of E. A network topology model of the high voltage power supply system of mines is constructed on the basis of the correlation matrix and parallel computing technology. Identification of power supply network topology can be conveniently completed and calculation function of the parallel short-circuit can be achieved on the basis of the network topology model, thereby effectively reducing time consumption of short-circuit calculation.
Description
technical field [0001] The invention discloses a parallel calculation method for the short-circuit current of a high-voltage power grid in a coal mine, which belongs to the field of short-circuit calculation of a high-voltage power supply network in a coal mine. Background technique [0002] There are multiple power sources in the power grid above 35kV, which belongs to the complex closed power grid, and the short-circuit calculation is more complicated; while the high-voltage power supply system of the mine is 6kV or 10kV, the two power sources should be operated separately, or one way is used and the other is reserved, which belongs to For single-power open-type power grid, the short-circuit calculation can use relatively simple absolute value method or relative value method. [0003] To complete the automatic short-circuit calculation for the mine high-voltage power supply system, it is necessary to first obtain the network topology of the high-voltage power supply system...
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Login to View More IPC IPC(8): G06F17/50
CPCG06F30/20G06F30/398G06F2119/12Y02E60/00
Inventor 王新良付萌萌刘志平王光超李自强黄青改王新
Owner HENAN POLYTECHNIC UNIV