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| Balancing Compensation Strategy of SVC Based on Grid-Voltage-Oriented Vector Transformation |
| Liu Qihui1, Wei Fang1, Kang Changlu2 |
| 1. North China Electric Power University Beijing 102206 China 2. Shandong Taikai Power Electronics Ltd. Corporation Tai'an 271000 China |
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Abstract It is important to provide balancing compensation for shock load because of the severe voltage fluctuation and 3-phase unbalance imposed on power supply system by it. Balancing compensation strategy of TCR type SVC is designed based on vector controlling method. By grid-voltage-oriented vector transformation of load current, the decouple of its fundamental positive & negative sequence components, together with its fundamental active & reactive components, is achieved. Then, the useful DC signals, which are necessary for compensating admittance calculation, are picked out by digital low pass filters (LPFs). Simulation and experiment results show that the strategy proposed by this paper has high precision and good dynamic characteristics without being influenced by harmonic currents of load.
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Received: 15 February 2008
Published: 17 February 2014
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2009, Vol. 24 
