Large-scale power grid flow correction equation parallel solving method

A modified equation, large-scale technology, applied in the field of solving, can solve the problems that the traditional serial power flow software cannot meet the dispatching needs of the smart grid well, and the real-time requirements are getting higher and higher

Active Publication Date: 2014-11-19
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Power flow calculation is an important function of real-time online analysis software for large power grids. With the development of power systems and the expansion of power grid scale, the calculation scale of o...

Method used

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  • Large-scale power grid flow correction equation parallel solving method
  • Large-scale power grid flow correction equation parallel solving method
  • Large-scale power grid flow correction equation parallel solving method

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Experimental program
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Embodiment

[0134] Using the conventional serial computing method and the parallel computing method of the present invention respectively, the P-Q decomposition power flow correction equation solution of a certain provincial power grid, a certain network level power grid and a certain UHV interconnected regional power grid is tested on a dual-CPU 32-core server , the test results are shown in the following list and curve. Table 1 shows the average time-consuming (seconds) of the conventional serial method. Table 2 shows the average time-consuming of the 383-node provincial adjustment model. Table 3 shows the average time-consuming of the 1265-node network adjustment model. Table 4 It is the average time consumption of network adjustment model for 6251 nodes; Note: All calculation time consumption in the table below is the average time consumption of ten calculations.

[0135] Table 1

[0136] 383 node grid

1265 node grid

6251 node grid

0.000675182

0.01009...

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Abstract

The invention provides a large-scale power grid flow correction equation parallel solving method. According to the characteristic of a factor table solving linear equation operation process and the sparsity of a flow correction equation coefficient matrix, rows which can be normalized at the same time are grouped, parallel normalization operation and elimination operation are completed. Row grouping information acquired in a factor table solving process, parallel former generation operation is completed. The efficiency of large-scale power grid flow solving is improved. The flow calculation real-time requirement of flow, security analysis, AVC and other online analysis applications of a power grid dispatcher can be met. The dispatcher can find potential risks of power grid operation soon, so as to ensure safe and stable operation of a power grid.

Description

technical field [0001] The invention relates to a solving method, in particular to a parallel solving method for a large-scale power grid power flow correction equation. Background technique [0002] At present, under the leadership of the State Grid Corporation of China, the practical work of the online analysis software for the smart grid dispatching control system has achieved phased results, and it has been promoted and tried in the dispatching technical support systems of dispatching organizations at all levels, providing a basis for the daily analysis of dispatching centers. and scheduling work has played a very important supporting role. From the perspective of the calculation speed of online analysis software, it is necessary to study the parallel computing technology and means suitable for real-time online analysis software of large power grids, further improve the calculation speed of online analysis software, and meet the real-time requirements of real-time analys...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 李静罗雅迪徐杰贾育培郎燕生郭子明邹昱施贵荣窦成龙张浩陈利杰王磊王淼王少芳
Owner STATE GRID CORP OF CHINA
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