Method for rapidly generating and solving model in power system operating simulation under security constraints
A power system and security constraint technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve problems such as low computational efficiency and large optimization model scale, and achieve improved refinement level, important practical significance, and good application. Foreground effect
Active Publication Date: 2016-01-06
TSINGHUA UNIV
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[0018] The purpose of the present invention is to solve the problem that the optimization model scale is relatively large in power system operation simulation considering safety constraints, which leads to low calculation efficiency
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[0027] Below in conjunction with accompanying drawing, the fast generation and solution method of the power system operation simulation model of security constraint that the present invention proposes;
[0028] In this method, the transmission lines, cables, transformers, and transmission equipment connecting two buses are defined as "branches"; all buses in the power system are defined as "nodes"; K is defined as the number of system branches, and N is the number of system nodes. M is the number of generators in the system; the implementation flow chart of this method is as follows figure 1 As shown, the method specifically includes the following steps:
[0029] 1) Obtain the information of all branches and nodes in the power system to be simulated within the running simulation time range, and calculate the original node impedance matrix and load of all branches in the power system according to the connection relationship between branches and nodes and the reactance of each b...
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The invention relates to a method for rapidly generating and solving a model in power system operating simulation under security constraints, and belongs to the field of power system analysis. The method comprises the following steps: obtaining all information relating to all branches and nodes within an operating simulation time range, and calculating an original node impedance matrix, a load transfer distribution factor original matrix and a generator transfer distribution factor original matrix, considering all branches, of a power system; correcting the original node impedance matrix, the load transfer distribution factor original matrix and the generator transfer distribution factor original matrix according to daily power system branch states; solving outputs of various generators in various time periods according to a power system unit combination optimization model free of the security constraints, and judging whether one branch is in an overload or not again; and carrying out multiple iterations until no branch is in a flow overload, obtaining the outputs of the generators of considering the security constraints in the time periods, and finishing annual operating simulation results of considering the security constraints. According to the method, the power system operating simulation speed of considering the security constraints can be improved; large-scale operating simulation, considering the security constraints, of the power system is facilitated; and improvement of the refinement level of power system planning is facilitated.
Description
technical field [0001] The invention belongs to the field of power system analysis, in particular to a method for quickly generating and solving models in power system operation simulation considering safety constraints. Background technique [0002] In recent years, with the continuous increase of the scale of the power system, the addition of intermittent energy sources such as wind power and solar energy, the construction of large-scale cross-basin multi-level hydropower stations, the access of various types of power sources such as nuclear power, pumped storage, and gas turbines, and the remote control of power grids Factors such as the distance between AC and DC hybrid transmission patterns have greatly increased the complexity of grid operation. In traditional power system planning, production simulation technology is often used to arrange the operating position of type units on the load curve, and then evaluate the adaptability and economy of future power planning. H...
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IPC IPC(8): H02J3/00
CPCG06F17/11G06F2119/06G06F30/367H02J2203/20Y02E60/00Y04S40/20H02J3/007
Inventor 张宁康重庆夏清杜尔顺
Owner TSINGHUA UNIV
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