Research on the Flexbile Control Technology of Small Hydropower for Grid Connection
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Abstract
As a clean non-polluting and renewable energy, small hydropower has great ecological and social benefits and its importance is increasing. Usually, Small hydropower is dispersed on mountainous regions. Most of small hydropower is run-of-river hydropower plant. The line voltage often leaps over the floor or ceiling following the varied output of small hydropower which is T-connected to the 10kV feeder disorderly. It seriously affects the distribution network's normal operation. In this paper, a control method based on fexible network is propsed to change the direction of the power flow and control the line voltage by adjusting the small hydropower's connecting position. Based on a regin of Guangdong with rich small hydropower, a simulation case is established to verify the correctness and applicability of the method which is proposed.
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