Calculation of transient stability-constrained TTC based on OPF method
The maximum relative rotor angle at the end of transient period is chosen as transient stability constraints. Based on optimal control theory, an effective approach, to calculate the gradients of transient stability constraints with respect to all control variables, is proposed by simultaneously com...
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| Published in: | Dianli Xitong Baohu yu Kongzhi Vol. 38; no. 19; pp. 22 - 32 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | Chinese |
| Published: |
01.10.2010
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| Subjects: | |
| ISSN: | 1674-3415 |
| Online Access: | Get full text |
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| Summary: | The maximum relative rotor angle at the end of transient period is chosen as transient stability constraints. Based on optimal control theory, an effective approach, to calculate the gradients of transient stability constraints with respect to all control variables, is proposed by simultaneously computing dynamic equations and co-state equations. According to the proposed approach, the transient stability constraints are simplified which can improve the calculating efficiency, and a refined OPF-based TTC model is established. Then the SQP(Sequential Quadratic Programming)algorithm is adopted to solve the TTC problem. Since the high-dimensional transient stability constraints are simplified dramatically, the TTC model is suitable for large scale power systems, meanwhile it can deal with multi-contingency effectively. At last, an IEEE39-bus system is applied to test the proposed approach. The results indicate that the transient stability-constrained TTC can maintain system stability, so that it illustrates the |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 |
| ISSN: | 1674-3415 |