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| Voltage Collapse Indices Based Method for Practical Computation of Total Transfer Capability |
| Jiang Zhen1, Miao Shihong1, Shang Yanan1, Hou Junxian2, Yu Zhihong2 |
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China;
2. China Electric Power Research Institute Beijing 100192 China |
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Abstract A voltage collapse indices based method for practical computation of total transfer capability is proposed. Compared to the traditional continuation power flow method, the proposed method has the following four characteristics: the proposed method is based on the original Newton method for power flow calculation, and won't appear continuation power flow extended Jacobian matrix singular phenomenon; voltage collapse indices would be calculated according to Jacobian matrix, this parameter can lead the whole state dispatched process, the system load(and power generation) state accurate positioning to the turning point; the proposed method would select appropriate inference step size automatically according to Jacobian matrix to ensure the entire network load(and power generation) approaching to the system turning point accurately; the whole state dispatched process is based on the calculation of the Jacobian matrix without every state dispatched step having complete Newton iterative process, So that the computation speed can be improved significantly. Many system numerical analyses indicate that the proposed method has a high computational efficiency in the premise of ensuring the accuracy of the calculations.
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Received: 01 February 2013
Published: 05 November 2014
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2014, Vol. 29 
