Flexibility Analysis of Conventional Generation with Random Fluctuation Renewable Energy

doi:10.3969/j.issn.1000－7229.2017.01.017

Abstract

Abstract: Flexibility reflects the ability of dealing with change of supply and demand in power system under a certain time scale. Flexibility study has a great significance on the analysis of renewable energy access problem. So it is needed to analyze the restrictive relationship between renewable energy and conventional generation. According to the characteristics of the ramping rate, this paper proposes the quantitative indices of the unit flexibility and the conventional generation flexibility of power system, and presents the corresponding calculation processes by Monte Carlo algorithm. Compared with other flexibility indices, the proposed flexibility indices can evaluate the flexibility of every conventional unit in power system and analyze the contribution of each one to conventional generation in the face of flexibility. Meanwhile, the ability of absorbing renewable energy also can be calculated. Finally, we take the IEEE 9-generator and 57-bus system as an example to calculate the proposed flexibility indices, and obtain the flexibility of unit and the ability of absorbing renewable energy of power system. The results show that the proposed indices are accurate and effective.

Key words: flexibility indices, fluctuating rate, ramping rate, absorptive ability

CLC Number:

TM 71
TN 86

WANG Ying, LIN Youkuo, LAN Xiaoming, ZHAO Hongshan. Flexibility Analysis of Conventional Generation with Random Fluctuation Renewable Energy[J]. Electric Power Construction, 2017, 38(1): 131-.

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