Title: Joint Oscillation Damping and Inertia Provision Service for Converter-Interfaced Generation Show Chinese title

Title: 基于换流器接口发电的联合振荡阻尼与惯性提供服务

Abstract: Power systems dominated by converter-interfaced distributed energy resources (DERs) typically exhibit weaker damping capabilities and lower inertia, compromising system stability. Although individual DER controllers are evolving to provide superior oscillation damping capabilities and inertia supports, there is a lack of network-wide coordinated management measures for multiple DERs, potentially leading to unexpected instability and cost-effectiveness problems. To address this gap, this paper introduces a hybrid oscillation damping and inertia management strategy for multiple DERs, considering network coupling effects, and seeks to encourage DERs to provide enhanced damping and inertia with appropriate economic incentives. We first formulate an optimization problem to tune and allocate damping and inertia coefficients for DERs, minimizing associated power and energy costs while ensuring hard constraints for system frequency stability and small-signal stability. The problem is built upon a novel convex parametric formulation that integrates oscillation mode location and frequency trajectory requirements, equipped with a theoretical guarantee, and eliminating the need for iterative tuning and computation burdens. Furthermore, to increase the willingness of DERs to cooperate, we further design appropriate economic incentives to compensate for DERs' costs based on the proposed cost minimization problem, and assess its impact on system cost-efficiency. Numerical tests highlight the effectiveness of the proposed method in promoting system stability and offer insights into potential economic benefits. Show Chinese abstract

Abstract: 以换流器接口分布式能源资源（DERs）为主的电力系统通常表现出较弱的阻尼能力和较低的惯性，影响系统稳定性。尽管单个DER控制器正在演进以提供更好的振荡阻尼能力和惯性支持，但缺乏针对多个DER的全局协调管理措施，可能导致意外的不稳定性和成本效益问题。为解决这一差距，本文引入了一种针对多个DER的混合振荡阻尼和惯性管理策略，考虑网络耦合效应，并旨在鼓励DER提供增强的阻尼和惯性，同时提供适当的经济激励。我们首先制定一个优化问题，对DER的阻尼和惯性系数进行调整和分配，在最小化相关功率和能量成本的同时，确保系统频率稳定性和小信号稳定性的硬约束。该问题建立在一个新颖的凸参数化公式基础上，整合了振荡模式位置和频率轨迹要求，具备理论保证，并消除了迭代调优和计算负担。此外，为了提高DER的合作意愿，我们进一步设计了适当的经济激励措施，基于提出的成本最小化问题补偿DER的成本，并评估其对系统成本效益的影响。数值测试突显了所提方法在促进系统稳定性方面的有效性，并提供了潜在经济效益的见解。