| 引用本文: | 刘怀东,王迪,陈彧,等.基于SIME的动态安全域快速计算[J].电力系统保护与控制,2017,45(7):21-27. |
| LIU Huaidong,WANG Di,CHEN Yu,et al.Rapid calculation of dynamic security region based on SIME[J].Power System Protection and Control,2017,45(7):21-27 |
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| 摘要: |
| 为了提高动态安全域的计算速度，基于单机等效法(Single Machine Equivalent, SIME)，提出了一种求解有功功率注入空间内临界注入点的新方法。当给定搜索方向时，根据动态安全域寻点特点，直接构建n维有功注入空间与等值单机无穷大系统机械功率间的非线性映射。根据实验数据得到利用SIME方法求解单机无穷大系统临界机械功率时，单侧逼近临界机械功率具有快速性的特点。依据此特点改进牛顿法，利用改进牛顿法求解此非线性映射可得到二阶的收敛速度。IEEE 10机39节点系统仿真结果表明，相比于传统的计算方法，新方法的计算速度显著提高。 |
| 关键词: 动态安全域 SIME 暂态稳定 功率注入空间 计算速度 |
| DOI：10.7667/PSPC160597 |
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| Rapid calculation of dynamic security region based on SIME |
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LIU Huaidong,WANG Di,CHEN Yu,YI Lezhao
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(Ministry of Education Key Laboratory of Smart Grid (Tianjin University), Tianjin 300072, China)
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| Abstract: |
| In order to improve the calculation speed of the dynamic security region, this paper, based on the SIME (Single Machine Equivalent) proposes a new method to calculate critical points in active power injection space. When a search direction is given, based on the characteristics of dynamic security domain, a non-linear map model is presented between n-dimensional space of active power injection and mechanical power of one-machine infinite-bus system. Experimental data suggest that when the SIME method is used to calculate the critical mechanical power of one-machine infinite-bus system, one-sided approximating method is of great rapidity. Considering this feature, Newton method is modified. The second order convergence rate can be obtained by using this modified method to solve the non-linear map model. Simulation on IEEE 10-generator 39-bus system shows that the calculation speed of the new method increases significantly when it is compared with the traditional method. |
| Key words: dynamic security region SIME transient stability power injection space calculation speed |
