A parallel inspection method for quick-break settings of high-voltage power grids in coal mines
An inspection method and technology for high-voltage power grids, which are applied in circuit devices, emergency protection circuit devices, and automatic disconnection emergency protection devices, etc., can solve problems such as large time overhead and so on.
Inactive Publication Date: 2019-03-26
HENAN POLYTECHNIC UNIV
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[0003] However, there are a large number of nodes in the high-voltage power supply system of the mine. It takes a lot of time to complete the quick-disconnection setting inspection of the entire mine high-voltage power grid based on the correlation matrix. In order to complete the quick-disconnection setting inspection of the mine high-voltage power grid based on the correlation matrix with less time overhead
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[0058] In the diagram of the coal mine high-voltage power supply system, if the switch is filled with black, it means that its switch state is open; otherwise, the switch state is closed.
[0059] in the attached figure 1 In the diagram of the coal mine high-voltage power supply system shown, there are 8 power supply branch nodes whose switch state is closed. Starting from the coal mine high-voltage power supply system power branch node, the coal mine high-voltage power supply system branch nodes are divided into n set, each node set uses S i Indicates that 1≤i≤n; then in the attached figure 1 In the diagram of the high-voltage power supply system of the coal mine shown, S 1 = {X1, X9, X10, X25, X26, X27, , X44, X45}, S 2 = {X2, X11, X12, X28, X29, X30, , X46, X47, X48, X49}, S 3 = {X3, X13, X14, , X31, X32, X33, X50, X51}, S 4 = {X4, X15, X16, , X34, X35, X36, X52, X53}, S 5 = {X5, X17, X18, X37, X38, X39}, S 6 = {X6, X19, X20}, S 7 = {X7, X21, X22, X40, X41}, S 8 ={...
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The invention discloses a quick-break setting parallel check method for a coal mine high voltage grid. The method comprises the steps of firstly, taking power branch nodes of a coal mine high voltage supply system as starting points, dividing the branch nodes of the coal mine high voltage supply system into n sets, and if different sets have the same interconnection switch nodes, merging these sets; and finally performing parallel network topology analysis based on an associated matrix, generating a final power supply associated matrix FG of the whole high voltage supply system according to all obtained power supply associated matrixes Gi, and completing quick-break setting parallel check of the high voltage grid based on the associated matrix FG. According to the method, a topology analysis scheduling model of the coal mine high voltage grid is constructed based on a parallel computing technology to realize quick-break setting parallel check of the whole coal mine high voltage supply system, so that the quick-break setting check speed can be effectively improved.
Description
technical field [0001] The invention discloses a parallel inspection method for quick-break setting of high-voltage power grids in coal mines, and belongs to the field of setting calculations for relay protection of high-voltage power supply networks in coal mines. Background technique [0002] There are multiple power sources in the power grid above 35kV, which belongs to the complex closed power grid, while the high-voltage power supply system of the mine is 6kV or 10kV level, the two power sources should be operated separately, or one way is used and the other is reserved, which belongs to the single power supply open power grid . At present, the simulation test of fault calculation and quick-break setting is carried out for complex closed-circuit power grids. In complex closed-circuit power grids, the network structure is complex, and it is necessary to construct a corresponding mathematical model for the fault situation of the entire power supply network to complete the...
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IPC IPC(8): H02H3/00H02H1/00
CPCH02H1/0092H02H3/006
Inventor 王新良张丽付萌萌叶小涛常世龙崔志学孙芃毕东升张一彬朱志强
Owner HENAN POLYTECHNIC UNIV