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Title:
CONSISTENCY ALGORITHM-BASED DISTRIBUTED FREQUENCY CONTROL METHOD FOR PHOTOVOLTAIC POWER STATION PARTITION
Document Type and Number:
WIPO Patent Application WO/2024/022543
Kind Code:
A1
Abstract:
A consistency algorithm-based distributed frequency control method for a photovoltaic power station partition. The method comprises: obtaining a frequency disturbance of a typical photovoltaic inverter in the current partition; according to the frequency disturbance and observation frequency of the typical photovoltaic inverter, and the rated frequencies and rated power of photovoltaic inverters, calculating the sum of the active output power of the photovoltaic inverters in the partition; obtaining a voltage disturbance of the current partition; calculating a direct-current voltage of each photovoltaic inverter according to the voltage disturbance, and a voltage value corresponding to the maximum power of the photovoltaic inverter; calculating an active power value of each photovoltaic inverter in the partition according to the direct-current voltage, the maximum direct-current voltage, the load shedding rate and the maximum power of each photovoltaic inverter; on the basis of the sum of the output power of the photovoltaic inverters, adjusting the distribution of active power and the distribution of reactive power of each photovoltaic inverter in the partition; and according to the active power and the reactive power of each photovoltaic inverter, completing the frequency control of the photovoltaic inverter.

Inventors:
YANG JUN (CN)
ZHAO ZHENGKUI (CN)
SONG RUI (CN)
ZHAO SHICHANG (CN)
ZHAO CHAOFAN (CN)
XU DECAO (CN)
BAI ZUOXIA (CN)
SU XIAOLING (CN)
CHEN LAIJUN (CN)
HAN YINGQIANG (CN)
LI DONGSHENG (CN)
WANG XUAN (CN)
GAN JIATIAN (CN)
ZHANG NING (CN)
WANG YIFEI (CN)
TUO CHANGJUN (CN)
ZHANG FAN (CN)
Application Number:
PCT/CN2023/121574
Publication Date:
February 01, 2024
Filing Date:
September 26, 2023
Export Citation:
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Assignee:
STATE GRID QINGHAI ELECTRIC POWER RES INSTITUTE (CN)
UNIV QINGHAI (CN)
STATE GRID QINGHAI ELECTRIC POWER CO (CN)
International Classes:
H02J3/24
Foreign References:
CN115117896A2022-09-27
CN111313483A2020-06-19
CN108054770A2018-05-18
CN111654035A2020-09-11
CN112865131A2021-05-28
US20200409404A12020-12-31
Other References:
ZHENG YOUYU; ZHAO YU;NANJING: "Research on the Fast Primary Frequency Modulation Control System of Photovoltaic Field Based on Total Station Control", ELECTRICAL MANUFACTURING, CN, vol. 15, no. 02, 25 June 2020 (2020-06-25), CN, pages 98 - 103, XP009552210, ISSN: 2095-9524
ZHANG BO; TANG WEI; CAI YONGXIANG; WANG ZHAOQI; LI TIANRUI: "Distributed Control Strategy of Residential Photovoltaic Inverter and Energy Storage Based on Consensus Algorithm", AUTOMATION OF ELECTRIC POWER SYSTEMS, NANJING ZIDONGHUA YANJIUSUO, NANJING, CN, vol. 44, no. 02, 25 January 2020 (2020-01-25), CN , pages 86 - 94, XP009552209, ISSN: 1000-1026
BRETT A. ROBBINS ET AL.: "A Two-Stage Distributed Architecture for Voltage Control in Power Distribution Systems", IEEE TRANSACTIONS ON POWER SYSTEMS, vol. 28, no. 02, 31 May 2013 (2013-05-31), pages 1470 - 1482, XP011532444, DOI: 10.1109/TPWRS.2012.2211385
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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