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1. (WO2018108481) POWER CONTROL OF INVERTERS OF A PHOTOVOLTAIC FACILITY FOR PARTICIPATING IN FREQUENCY REGULATION OF THE ELECTRICAL DISTRIBUTION NETWORK

Pub. No.:    WO/2018/108481    International Application No.:    PCT/EP2017/080320
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Sat Nov 25 00:59:59 CET 2017
IPC: H02J 3/38
H02J 3/46
H02J 3/04
Applicants: ELECTRICITE DE FRANCE
Inventors: ROSSÉ, Antoine
DELILLE, Gauthier
Title: POWER CONTROL OF INVERTERS OF A PHOTOVOLTAIC FACILITY FOR PARTICIPATING IN FREQUENCY REGULATION OF THE ELECTRICAL DISTRIBUTION NETWORK
Abstract:
The invention concerns the control of electrical production by a facility of photovoltaic panels in order to constitute a power reserve, facility in which N inverters manage the production. A method is iteratively performed including the steps of: - transmitting (a) respective instructions to a number k of inverters among the assembly of N inverters, in order to each produce a maximum power, where k < N, the k inverters being determined for a given iteration of the method, and obtaining, from k inverters, measurements of maximum power produced respectively by the k inverters and recording (c) these measurements in a memory with N-k other measurements obtained from N-k complementary inverters during preceding iterations of the method; - estimating (d), by reading the contents of the memory, a maximum total power able to be produced by the assembly of N inverters of the facility, and obtaining a piece of information relating to a quantity of reserve power to be constituted, and determining (e) an overall power to be produced such that the difference between said overall power and said maximum total power corresponds to said quantity of reserve power to be constituted, - maintaining (f) the instructions of the k inverters to produce a maximum power, and transmitting respective instructions to N-k complementary inverters in order to produce a target power that is less than a maximum power, in order that the sum of the N-k target powers and the k maximum powers corresponds to said overall power to be produced, and - selecting, among the N inverters, one or more subsequent inverters for replacing the k inverters in a subsequent iteration of the method.