机组组合模型中静态电压稳定服务定价的原-对偶公式

中文摘要 AI 辅助

在现代电力系统中，随着基于逆变器的资源（IBR）的高渗透率，大多数变流器以电网跟随（GFL）模式运行。部分母线呈现出固有较低短路比（SCR），这一特性主要由网络拓扑决定。因此，将GFL-IBR集成到此类弱母线上需要关注静态电压稳定性。为解决此问题，已有市场机制被提出以激励发电机提供电压稳定服务，例如通过同步发电机的投运来降低低SCR母线的等效阻抗，以及来自GFL-IBR的自适应无功支持。为了计算这些服务的影子价格，先前提出的方法（如“受限”和“可调度”方法）可能无法保证电压稳定服务提供者的运行成本回收。由于由此产生的价格完全由社会盈余最大化目标决定，机组的盈利能力被完全忽视。这表明需要新的定价方法来满足成本回收要求。因此，本文提出了一种基于原-对偶公式的定价方法。案例研究表明，所提出的方法能够持续产生收入充足的影子价格，使所有参与机组无需额外补偿支付即可回收其成本。

英文摘要

In modern power systems with high penetration of Inverter-Based Resources (IBR), most converters operate in Grid-Following (GFL) mode. Some buses exhibit inherently low Short-Circuit Ratios (SCRs), a property majorly shaped by network topology. The integration of GFL-IBR onto such weak buses thus demands attention to static voltage stability. To address this issue, market mechanisms have been proposed to incentivize generators to provide voltage stability services, such as commitment of synchronous generators for reducing the equivalent impedance at low SCR buses and adaptive reactive power support from GFL-IBR. To compute shadow prices for these services, previously proposed methods such as the `restricted' and `dispatchable' approaches may fail to guarantee operating cost recovery for voltage-stability service providers. As the resulting prices are determined purely from a social surplus maximization objective, the profitability of units is entirely overlooked. This suggests that new pricing methodologies are needed to satisfy cost-recovery requirements. Therefore, this paper proposes a pricing method based on a primal-dual formulation. Case studies demonstrate that the proposed method can consistently produce revenue-adequate shadow prices, enabling all participating units to recover their costs without supplementary uplift payments.

发表机构

• Technical University of Madrid（马德里理工大学）
• School of Industrial Engineering and Design (ETSIDI), Technical University of Madrid（马德里理工大学工业工程与设计学院）

机构由 AI 辅助整理，请以论文原文为准。