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- EI;中国精品科技期刊;北大中文核心;CSCD;SCOPUS;CNKI
- EI;中国精品科技期刊;北大中文核心;CSCD;SCOPUS;CNKI
- EI;中国精品科技期刊;北大中文核心;CSCD;SCOPUS;CNKI
- EI;中国精品科技期刊;北大中文核心;CSCD;SCOPUS;CNKI
- EI;中国精品科技期刊;北大中文核心;CSCD;SCOPUS;CNKI
- EI;中国精品科技期刊;北大中文核心;CSCD;SCOPUS;CNKI
- 主编：Xue Yusheng
- ISSN:1000-1026
- CN:32-1180/TP
- 出版周期：Semimonthly
- 电话：13632102679
- 邮箱：aeps@alljournals.cn
- 简介：《电力系统自动化》(半月刊)创刊于1977年，由国家电网有限公司主管，国网电力科学研究院有限公司主办，是中国电气工程学科的知名期刊。每月的10日、25日出版,全年共出版24期，国内外公开发行。目前已发行至全国各省、市、自治区和港澳台地区，国外发行至北美、欧洲和亚太地区数十个国家，拥有大量国内外读者。
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2026年第50卷第21期
Review·Perspective
摘要：Against the background of coordinated advancement of the rural revitalization and the carbon emission peaking and carbon neutrality strategies, clarifying the diversified development pathways for rural distributed energy systems and overcoming the bottlenecks in their comprehensive utilization technologies are crucial for promoting the green and low-carbon transition of rural energy systems and supporting the sustainable development of the rural economy. To review the research progress and development pathways of rural distributed energy systems, this paper conducts a comprehensive overview of the current research status in China. First, from a regional perspective, it analyzes the resource endowments and energy demand characteristics of rural distributed energy systems in China, systematically reviews the application status of various types of distributed energy systems and multi-energy complementary systems, and summarizes the common issues in their technological application. Second, it analyzes comprehensive utilization and energy efficiency enhancement technologies from three perspectives such as collaborative optimization of multi-energy complementary systems, digital support and intelligent regulation, and implementation pathways with supporting mechanisms. Finally, based on this analysis, it proposes a phased development pathway and offers targeted recommendations for future development across three dimensions: technology, institution, and market.关键词：rural distributed energy system;development pathways;comprehensive utilization;multi-energy complementary system;energy efficiency enhancement5|21|0更新时间：2026-11-04Grid-forming Technology
摘要：With the increasing installed capacity of renewable energy and the rising proportion of DC feed-in year by year, the frequency stability issue of the receiving-end power grid has become increasingly severe. The grid-forming voltage source converter based high-voltage direct current (VSC-HVDC) system can provide frequency support for the power grid and enhance system frequency stability. Considering the frequency support characteristics of grid-forming VSC-HVDC, DC system parameters and frequency response characteristics of the AC power grid, a system frequency response model incorporating the support characteristics of the VSC-HVDC system is established. The impacts of major system parameters and control parameters on the frequency regulation characteristics are analyzed. A frequency support strategy based on linear active disturbance rejection control (LADRC) is proposed to improve the adaptability of grid-forming control, and a parameter tuning analysis method is provided. Finally, a grid-forming VSC-HVDC transmission system in Gobi Desert and other arid areas is built on the PSCAD/EMTDC simulation platform. The system frequency model considering the frequency support characteristics can accurately depict the frequency response. The proposed control strategy can significantly reduce frequency deviations and enhance the system frequency support capability and adaptability.关键词：Gobi Desert and other arid areas;renewable energy base;grid-forming control;voltage source converter based high-voltage direct current (VSC-HVDC);frequency response;frequency support;virtual synchronous generator;active disturbance rejection control6|6|0更新时间：2026-11-04- 摘要：With the increasing penetration of renewable energy in new power systems, the inertia level of power grids has been continuously decreasing, and the problems of system frequency and oscillation have become increasingly serious. To address the above issues, this paper designs a supercapacitor-based inertia emulation control strategy by combining the power equations of the supercapacitor with the grid-forming matching control equations of the photovoltaic system. This strategy enhances system equivalent inertia without modifying the inherent grid-forming control architecture of the photovoltaic inverter. Furthermore, the equivalent torque method is employed to establish a stability analysis model, which clarifies the mechanisms of the influence of the DC-link voltage synchronization loop and the supercapacitor control loop on system stability. It reveals the mechanism of supercapacitor control suppressing low-frequency oscillations by enhancing damping torque in the low-frequency range, providing a theoretical foundation for control design. Finally, the proposed inertia analysis and emulation strategy is validated on the Typhoon hardware-in-the-loop test platform. The results show that the proposed strategy can effectively improve the inertia level and operational stability of the grid-forming photovoltaic inverter.关键词：renewable energy;photovoltaic inverter;grid-forming control;inertia;low-frequency oscillation;supercapacitor;stability;torque20|5|0更新时间：2026-11-04
- 摘要：With the continuous increase in the installed capacity of renewable energy integrated through grid-following converters, the inertia and voltage strength of local power grids have significantly declined, necessitating the deployment of grid-forming energy storage systems to provide grid support. Therefore, local power grids are transitioning to hybrid renewable energy systems that combine grid-following and grid-forming converters. Unlike conventional synchronous generators, the synchronous torque and damping coefficients of these grid-following and grid-forming converters are nonlinear, which complicates the synchronization process and hinders the transient stability analysis in multi-converter systems. To this end, based on the motion equations of power-angle coupling, a third-order transient synchronization equation characterizing frequency and power-angle difference of a two-machine system is established to describe the dynamic process of grid-following/grid-forming hybrid systems under islanded operation. When the hybrid system operates in off-grid mode, load changes can cause steady-state frequency deviations of the system. However, when the positive and negative signs of the frequency deviation are different, the damping effect of the converters is opposite, resulting in differences in transient stability characteristics. To illustrate the influence mechanism of damping coefficients on transient stability, a customized phase-plane diagram is developed to visualize the transient damping energy, providing an intuitive and physical interpretation of the damping effect. On this basis, an adaptive damping enhancement strategy is proposed to adjust the damping coefficient adaptively, thereby further enhancing the system transient stability. Finally, simulation results validate the correctness of the transient stability analysis and effectiveness of the proposed control strategy.关键词：grid-forming converter;grid-following converter;damping;frequency deviation;renewable energy system;transient stability5|2|0更新时间：2026-11-04
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