Abstract

Regulating the frequency fluctuations (known as load frequency control) in the power system is an important aspect that directly signifies the balance between the generation and demand. The present study proposes an optimal LFC scheme encapsulating the concept of fractional-order based tilted-integral-derivative (TID) controller having optimized parameters using the recently developed optimization technique called salp swarm algorithm. The various non-linearities such as governor dead-band, generation rate constraint, and communication time delays are also considered in the power system having thermal-hydro-wind turbines generating units in both areas. Furthermore, the impact of thyristor controlled phase shifter (TCPS) and redox flow battery (RFB) has been investigated in the proposed power system. Extensive simulations for different test systems and robustness analysis with wide variation in all system parameters at a time have been executed to validate the superiority of the proposed control strategy. The effectiveness of the proposed controller has been studied by comparing system response with recently developed algorithms. The performance evaluations confirm that the proposed controller provides stable, optimal, and superior performance compared to other existing schemes. Further, obtained results strongly suggest that TCPS and RFB units stabilize the transients quickly to enhance the system frequency stability during load instabilities.

摘要

调节电力系统中的频率波动（称为负荷频率控制）是直接表示发电与需求之间平衡的重要方面。本研究提出了一种最优 LFC 方案，该方案封装了基于分数阶的倾斜积分微分 (TID) 控制器的概念，该控制器具有使用最近开发的称为 Salp 群算法的优化技术优化的参数。在这两个领域都具有热-水-风力发电机组的电力系统中，还考虑了各种非线性，例如调速器死区、发电率约束和通信时延。此外，已在拟议的电力系统中研究了晶闸管控制移相器 (TCPS) 和氧化还原液流电池 (RFB) 的影响。对不同测试系统的广泛模拟和一次所有系统参数变化很大的稳健性分析已被执行，以验证所提出的控制策略的优越性。通过将系统响应与最近开发的算法进行比较，研究了所提出的控制器的有效性。性能评估证实，与其他现有方案相比，所提出的控制器提供了稳定、最佳和卓越的性能。此外，获得的结果强烈表明 TCPS 和 RFB 单元可以快速稳定瞬态，以提高负载不稳定期间的系统频率稳定性。通过将系统响应与最近开发的算法进行比较，研究了所提出的控制器的有效性。性能评估证实，与其他现有方案相比，所提出的控制器提供了稳定、最佳和卓越的性能。此外，获得的结果强烈表明 TCPS 和 RFB 单元可以快速稳定瞬态，以提高负载不稳定期间的系统频率稳定性。通过将系统响应与最近开发的算法进行比较，研究了所提出的控制器的有效性。性能评估证实，与其他现有方案相比，所提出的控制器提供了稳定、最佳和卓越的性能。此外，获得的结果强烈表明 TCPS 和 RFB 单元可以快速稳定瞬态，以提高负载不稳定期间的系统频率稳定性。