LOW VOLTAGE APPARATUS ›› 2021, Vol. 0 ›› Issue (8): 76-81.doi: 10.16628/j.cnki.2095-8188.2021.08.014

• Distributed Generation and Grid-Connection Technology • Previous Articles     Next Articles

Development of Fast Power Control Device for Grid Connection Point of new Energy Station

BAI Shenyi1, YU Gaowang1, YANG Guixing2, XU Shenglong1, WEI Yanwei1   

  1. 1. XU JI Group Corporation,Xuchang 461000,China
    2. State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830006,China
  • Received:2021-04-21 Online:2021-08-30 Published:2021-10-14

Abstract:

In order to make full use of the primary frequency regulation capability of new energy stations,a fast power control device suitable for grid connected operation of new energy stations is developed.Firstly,the function of the device is introduced,the hardware and software design scheme is proposed,and then the fast power control strategy flow is analyzed.The device supports IEC 103,Modbus TCP and other communication protocols.UDP protocol or GOOSE communication can be used for millisecond level control of inverter to realize fast power regulation of photovoltaic station.The device integrates station AGC function design,and can receive the regulation instruction of dispatching AGC system.The test results show that the frequency measurement accuracy of the device is as high as 0.001 Hz.The whole set of action time is less than 60 ms.The response speed of new energy fast power regulation is significantly improved.

Key words: primary frequency modulation, inverter, fan, UDP protocol, AGC system

CLC Number: