微电网.第3-3部分:技术要求.可调度负载的自调节

[中文适用范围]： IEC 62898的这一部分涉及通过可调度负载实现交流微电网的频率和电压稳定，这些负载自主地对频率和电压的变化做出反应，改变有功功率消耗。涵盖50Hz和60Hz电力系统。本文档给出了模拟负载自调节效应的要求，包括合成惯性。 推荐用于此方法的负载是非关键负载，这意味着它们的功率调制不会显著影响用户，因为涉及某种形式的能量存储，有效将终端能源使用与电网供电解耦。负载的自调节在孤岛模式和并网模式下都有益。本文档详细说明了自调节行为，但未规定哪些负载应作为可选功能参与此方法。 本文档涵盖具有下垂控制的连续可调负载和具有分级设置的开关负载。本文档的范围限于连接到电压等级不超过35KV的负载。电压稳定的无功功率和直流微电网不在本文档范围内。 注1：如果系统操作员和电网用户同意，本文档概述的自调节原则也可以应用于其他电力网络中的负载，参见IEC/ISO Directives, Part 1:2023, C.4.3.2, 示例1。 注2：根据3.1.7，具有电能存储系统（如不间断电源）的关键负载被视为非关键负载，因此是可调度的。 [外文原描述]： IEC TS 62898-3-3:2023 deals with frequency and voltage stabilization of AC microgrids by dispatchable loads, which react autonomously on variations of frequency and voltage with a change in active power consumption. Both 50 Hz and 60 Hz electric power systems are covered. This document gives requirements to emulate the self-regulation effect of loads including synthetic inertia. The loads recommended for this approach are noncritical loads, this means their power modulation will not significantly affect the user as some kind of energy storage is involved which effectively decouples end energy use from the electricity supply by the electric network. The self-regulation of loads is beneficial both in island mode and grid-connected mode. This document gives the details of the self-regulation behaviour but does not stipulate which loads shall participate in this approach as an optional function. This document covers both continuously controllable loads with droop control and ON/OFF switchable loads with staged settings. The scope of this document is limited to loads connected to the voltage level up to 35 kV. Reactive power for voltage stabilization and DC microgrids are excluded in this document.