Research On Applied Technology Of Power System Fault

Recently, several foreign power system faults caused a lot of loss. It makes the study of power system fault diagnosis more urgent. Moreover, after the fault, the quick and accurate diagnosis of fault component is the precondition of repair and recover power. So the diagnosis of fault component became the most important in the power system fault diagnosis.The key problem of power system fault diagnosis is the distinguish of fault equipments in fault area quickly and accurately. Base on protect and breaker information, this paper uses minimal deviation between expected value and actual value as objective function. Because the exponent form is prompt with the fact that the malfunction area inner waiting for increasing by diagnosing component quantity, target function calculation number of times presenting enhance, lead to adopt enumeration way or the tradition branch demarcation law can not satisfy the need searching for the optimum solution rapidly. This paper finds the solution with the target changing becoming 0-1 integer plan problems. Not only genetic algorithms does not to need to check knowledge regulation and to train a sample book directly, but also the number of times of search is the fewest, and the fault component could be recongnized.Base on the protection action principle, this paper sums up the generator, transformer, transline and busbar detailedly, and designes malfunction diagnose inheritance algorithm C++ procedure. Procedure is accomplished because C language procedure rewrites much according to current inheritance algorithm, the code multiplexing being able to not embody be geared to the needs of marriage partner programming waits for characteristic propert. This paper has designed that the inheritance algorithm kind and the dyeing individual kind have realized the data encapsulation , inherit and much state sex. For the problem such as overlaborate place operation and memory assignment resolving procedure middle, the function realizes the main body of a book owing to that STL has designed inheritance algorithm malfunction diagnose algorithm procedure data structure and inheritance algorithm, urge the C++ code is especially concise, high-effect and reliable and so on. The union electric system malfunction diagnose example and , the verification having carried out the malfunction diagnose model and the algorithm procedure, have confirmed accurate diagnose result reasonableness.For satisfying the need that the power system diagnose studies and the effective storage and invoking about the fault information of power system, on the basis studying the vector artwork technology's, this paper defines coordinate system and mapping relation, realizes power equipment picture basic drawing and manage. The platform composes with the draw of power component and the operation of database. This paper realize the draw function of power component, achieves mapping between power component and database record, and satisfies the need of power system fault diagnosis. Meanwhile, this paper makes further verify about the rightness of common apply of the platform of graphic and database and fault diagnosis base on IEEE power system with five generater and fourteen nodes.