Electric power system analysis parallel computing method and system based on grid computation
A power system and parallel computing technology, applied in the direction of concurrent instruction execution, machine execution device, program startup/switching, etc. Problems such as task parallelization, to achieve the effect of reducing hardware costs
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example 1
[0078] Use a single computer to solve the transient stability simulation in parallel using the shared memory parallel programming method. The program is a self-compiled software based on the OpenMP shared memory parallel library. The test object is a case of a power system network with 3872 bus nodes (hereinafter referred to as the 3872 case) ), the test environment is an AMD PhenomII 2.5GHz quad-core computer, and the test results are shown in Table 1 below:
[0079]
[0080] Table 1
[0081] In order to simulate an old computer, the processor was downclocked to 800MHz and re-tested. The results are as follows:
[0082]
[0083] Table 2
[0084] It can be seen that the calculation program based on the shared memory parallel programming method can obtain almost the same ideal speedup ratio on computers with different performances, and the parallelization performance is significantly improved.
example 2
[0086] The power network division module executed on the server side can also be parallelized by using the shared memory parallel programming method. For the power system network case with 3872 bus nodes, the test results in Table 3 are as follows:
[0087] Threads
1
2
4
operation hours
94ms
46ms
31ms
Speedup ratio
1.00
2.04
3.03
core efficiency
100%
102%
76%
[0088] table 3
[0089] It proves that the shared memory parallel programming method has effective acceleration performance for multiple processes of power system calculation, and because the network division process takes less time, it can be carried out on the server side without affecting the real-time performance of the system designed by the present invention.
example 3
[0091] Use five Dell Optiplex 360 type computers (possess Core 22.6GHz dual-core processor, 2GBRAM, Windows XP operating system) to build a set of evaluation platform according to the embodiment of the present invention, wherein one computer is as service end, and four computers are as client computers , Five computers are connected using 100M LAN.
[0092] The following tests are designed: one computer calculates one calculation task in series, one computer calculates one calculation task in parallel, a single computer calculates 11 and 16 calculation tasks in serial mode, a single computer calculates 16 calculation tasks in parallel mode, four The computer serial mode calculates 11 and 16 calculation tasks, four computers calculate 11 and 16 tasks in parallel, adopts the mode of the present invention to calculate 11 and 16 tasks, and the test object is the case of 3872 nodes. The results are shown in Table 4 below:
[0093]
[0094] Table 4
[0095] It can be seen that ...
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