• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

Electric Power Construction ›› 2019, Vol. 40 ›› Issue (2): 79-86.doi: 10.3969/j.issn.1000-7229.2019.02.010

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Research on Stability Control of Microgrid Applying Virtual Synchronous Generator with Adaptive Parameters

HUO Xianxu1, WU Pan2, HUANG Xin2, YAN Jingjing1,  WANG Keyou2, XU Ke3, YAO Cheng3, CHEN Peiyu1   

  1. 1. Electric Power Research Institute of State Grid Tianjin Electric Power  Company, Tianjin 300384, China;2. Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education (Shanghai Jiao Tong University), Shanghai 200240, China;3. State Grid Tianjin Electric  Power  Company, Tianjin 300310, China
  • Online:2019-02-01
  • Supported by:
    This work is supported by National Nature Science Foundation of China (No.51877133) and Science and Technology Project of State Grid Tianjin Electric  Power Company(No.SGTJDK00DWJS170040).

Abstract: With the rapid development of the distributed generation technology and microgrid technology, more and more power electronic devices are used in modern power system especially in microgrids. Meanwhile, power electronic converters in microgrid may affect the stability of the system due to lack of necessary inertia and damping. To deal with the problem, this paper, by simulating the traditional synchronous machine rotor equation, equips the droop control with virtual inertia and damping to set up a virtual synchronous generator control model for inverter control. Next, the influence of inertia and damping parameters on the control stability of the virtual synchronous generator is studied. By designing reasonable trigger mechanism, the virtual synchronous generator control strategy with adaptive parameters is put forward, which can flexibly switch adaptive parameter adjustment mode according to control requirements. At last, simulation result and comparative analysis show that the proposed strategy is beneficial to enhance the frequency and power stability of the system to a certain extent.

Key words: microgrid, inverter, virtual synchronous generator, adaptive parameters, stability control

CLC Number: