Accommodation capacity evaluation of renewable energy in power systems considering peak and frequency regulation

Abstract

With the fast growth of renewable energy, the modern power systems are transitioning to the renewable energy dominated energy systems. However, the intrinsic intermittence and volatility of renewable energy also impose considerable challenges on the power system operation. Hence, it is of great significance to accurately evaluate the renewable energy accommodation capacity (REAC) in power system so as to effectively instruct the sustainable development of renewable energy and to alleviate the ongoing operational burdens. This paper proposes a novel evaluation method of REAC in power system comprehensively considering peak and frequency regulation. First, the mechanism and cost of deep peak regulation of thermal power units are deeply analyzed, and then the frequency dynamics response is modeled explicitly and simplified effectively. Next, a synthetic interaction model of “source-network-storage” is developed with diversified generation units, network and energy storage constraints. Furthermore, a multi-objective optimization model is established considering both economic and technical issues, and a REAC evaluation method is developed by integrating an incremental capacity augment approach with the proposed multi-objective model. Finally, the proposed REAC evaluation method is tested on the modified IEEE 39-bus system, and the numerical results verify the effectiveness of the proposed method.

Multi‐time scale adequacy evaluation of the power system with high penetration of renewable energy sources based on empirical mode decomposition

“…This indicates that energy storage devices can improve the regulation capability of the system to some extent. The value of P − lack FIGURE 13 Multi-time scale fluctuation components of the net load for scenario 1 under first-order difference. decreases from 2.27% to 1.02%.…”

“…In Ref. [13], a novel renewable energy accommodation capacity (REAC) evaluation method is developed, taking into account both economic and technical issues. This method comprehensively incorporates the peak shaving and frequency regulation capabilities into the REAC analysis.…”

“…But the Ref. [13][14][15] focus on a specific time scale and it is difficult to evaluate adequacy on several different time scales simultaneously.…”

“…But the Ref. [13–15] focus on a specific time scale and it is difficult to evaluate adequacy on several different time scales simultaneously. Table 1 shows the comparison of research subjects in different literature.…”

Multi-scenario renewable energy absorption capacity assessment method based on the attention-enhanced time convolutional network

“…Ma et al (2022) proposed a medium-and long-term optimization model considering cross-regional power trading and renewable energy absorption interval, and the penalty term of renewable energy absorption interval is added to the objective function. Yu et al (2023) proposed a renewable energy absorption capacity assessment method that considers peak regulation and frequency response requirements. The original complex peak regulation mechanism and frequency response are equivalent to several mixed integer linear equations to reduce the computational complexity.…”