Coordinated Operation of Concentrating Solar Power Plant and Wind Farm for Frequency Regulation

Abstract

As a dispatchable renewable energy technology, the fast ramping capability of concentrating solar power (CSP) can be exploited to provide regulation services. However, frequent adjustments in real-time power output of CSP, which stems out of strategies offered by ill-designed market, may affect the durability and the profitability of the CSP plant, especially when it provides fast regulation services in a real-time operation. We propose the coordinated operation of a CSP plant and wind farm by exploiting their complementarity in accuracy and durability for providing frequency regulation. The coordinated operation can respond to regulation signals effectively and achieve a better performance than conventional thermal generators. We further propose an optimal bidding strategy for both energy and frequency regulations for the coordinated operation of CSP plant and wind farm in day-ahead market (DAM). The validity of the coordinated operation model and the proposed bidding strategy is verified by a case study including a base case and sensitivity analyses on several impacting factors in electricity markets.

Dynamic Setting Method of Assessment Indicators for Power Curves of Renewable Energy Sources Considering Scarcity of Reserve Resources

“…Reference [13] proposed an optimal scheduling strategy for incorporating the remaining reserve resources into the intraday ancillary service market by predicting the power adjustment margin of wind energy. The above-mentioned studies mainly discussed how to reduce the power fluctuations and forecast deviations of RESs, and analyzed the effect of improving the accuracy of RES power curves in helping power grid maintain stable operation [14]- [16]. In existing references, the insufficient RRs in power grid are often supplemented through bidding in the ancillary service market.…”