Matching Relationship of Inertia Response and Primary Frequency Modulation Function for High-proportion New Energy Power System

SHENG Siqing; SONG Jiawei; WU Kunxuan; SUN Dawei

doi:10.19725/j.cnki.1007-2322.2023.0251

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Matching Relationship of Inertia Response and Primary Frequency Modulation Function for High-proportion New Energy Power System

更新时间：2025-12-11

- Matching Relationship of Inertia Response and Primary Frequency Modulation Function for High-proportion New Energy Power System
- Issue 6, Pages: 1230-1238(2025)
- 作者机构：
  
  1. 华北电力大学电气与电子工程学院,河北省,保定市,071003
  2. 国网冀北电力科学研究院(华北电力科学研究院有限责任公司), 北京市西城区,100045
- 作者简介：
- 基金信息：
- DOI：10.19725/j.cnki.1007-2322.2023.0251
  CLC：
- Published：2025
- 稿件说明：
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SHENG Siqing, SONG Jiawei, WU Kunxuan, et al. Matching Relationship of Inertia Response and Primary Frequency Modulation Function for High-proportion New Energy Power System[J]. 2025, (6): 1230-1238.
DOI：

SHENG Siqing, SONG Jiawei, WU Kunxuan, et al. Matching Relationship of Inertia Response and Primary Frequency Modulation Function for High-proportion New Energy Power System[J]. 2025, (6): 1230-1238. DOI： 10.19725/j.cnki.1007-2322.2023.0251.

摘要

随着新能源占比不断提高，高比例新能源电力系统的惯量响应与一次调频能力已发生深刻改变。在考虑新能源替代同步机对系统频率特性影响的前提下，理清新型电力系统中惯量响应与一次调频的功能定位与配合关系，已成为当前研究热点。为此，首先说明了系统频率扰动过程中，惯量响应和一次调频阶段的功率响应与能量转换机制。其次，在MATLAB/Simulink中建立了系统频率响应模型，以不引发低频减载为约束，研究系统惯量水平与一次调频速度的匹配关系与最低要求，得到新能源不提供惯量与一次调频时系统的极限新能源渗透率。最后，设定新能源可提供惯量与调频支撑的前提条件，从惯量支撑水平、一次调频裕度和一次调频速度3个方面对新能源机组提出调频要求，并对比分析50%、75%和100%渗透率下系统对新能源的调频要求，为高比例新能源电力系统中新能源机组一次调频速度的设定提供参考。

Abstract

With the increasing penetration of new energy

the inertia response and primary frequency modulation capability of high proportion new energy power system have undergone profound changes. Considering the influence of new energy replacement synchronizer on the system frequency characteristics

the functional positioning and cooperation relationship between inertia response and primary frequency modulation in new power system has become a prominent research topic. In this paper

the power response and energy conversion mechanism of inertia response stage and primary frequency modulation stage in the process of frequency disturbance are initially explained. Secondly

the frequency response model of the system is established in MATLAB/Simulink

and the matching relationship and minimum requirements of the system inertia level and primary frequency modulation speed are investigated under the constraint of not causing low frequency load reduction. Additionally

the limit new energy permeability of the system is further analyzed when the new energy does not provide inertia and primary frequency modulation. Finally

the premise that new energy can provide inertia and frequency modulation support is established

the frequency modulation requirements for new energy units are proposed from three aspects of inertia support level

primary frequency modulation margin and primary frequency modulation speed

and the system's frequency modulation requirements for new energy are compared under the penetration levels of 50%

75% and 100%. It provides reference for determining the primary frequency modulation speed of new energy units in a high-proportion new energy power system.

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references

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