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1. WO2018126822 - CONTROL METHOD AND CONTROL SYSTEM FOR A DISTRIBUTED POWER SOURCE ENERGY GENERATION SYSTEM

Publication Number WO/2018/126822
Publication Date 12.07.2018
International Application No. PCT/CN2017/113582
International Filing Date 29.11.2017
IPC
H02J 1/12 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
1Circuit arrangements for dc mains or dc distribution networks
10Parallel operation of dc sources
12Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
H02M 3/335 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
CPC
H02J 1/12
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
1Circuit arrangements for dc mains or dc distribution networks
10Parallel operation of dc sources
12Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
H02M 3/3353
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
3353having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
H02M 3/33561
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33561having more than one ouput with independent control
Applicants
  • 清华大学 TSINGHUA UNIVERSITY [CN]/[CN]
Inventors
  • 孙凯 SUN, Kai
  • 陆杨军 LU, Yangjun
  • 吴红飞 WU, Hongfei
Agents
  • 北京睿邦知识产权代理事务所(普通合伙) RUIBANG&PARTNERS
Priority Data
201710014053.209.01.2017CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) CONTROL METHOD AND CONTROL SYSTEM FOR A DISTRIBUTED POWER SOURCE ENERGY GENERATION SYSTEM
(FR) PROCÉDÉ ET SYSTÈME DE COMMANDE D'UN SYSTÈME DE PRODUCTION D'ÉNERGIE À SOURCE D'ÉNERGIE DISTRIBUÉE
(ZH) 分布式电源发电系统的控制方法和控制系统
Abstract
(EN)
A control method and control system for a distributed power source energy generation system The distributed power supply energy generation system comprises N sub-isolated three-port converters and N independent distributed direct-current power sources corresponding to the N sub-isolated three-port converters on a one-to-one basis, wherein N is a natural number greater than 1; an input port of each of the sub-isolated three-port converters is connected to a corresponding distributed direct-current power source, two-way ports are connected in parallel so as to form a low-voltage direct-current bus-bar, and output ports are connected in series and then access a medium-voltage direct-current power distribution network. The control method comprises: the input power of each sub-isolated three-port converter is controlled independently; the two-way ports and the output ports use a virtual resistance-based power-voltage drop control strategy; stable control of the voltage of the two-way port of each sub-isolated three-port converter and voltage equalization control on the voltage of the output port of each sub-isolated three-port converter can be realized; modular design is achieved; and a feasible technical solution can be provided for the access of a distributed power source energy generation system into a medium-voltage direct-current power distribution network.
(FR)
La présente invention concerne un procédé et un système de commande d'un système de production d'énergie à source d'énergie distribuée, ledit système de production d'énergie comprenant N convertisseurs à trois ports sous-isolés et N sources d'alimentation en courant continu distribuée indépendantes correspondant aux N convertisseurs à trois ports sous-isolés sur une base individuelle, N étant un nombre entier supérieur à 1, un port d'entrée de chacun des convertisseurs à trois ports sous-isolés étant connecté à une source d'alimentation en courant continu distribuée correspondante, deux ports bidirectionnels étant connectés en parallèle de manière à former une barre omnibus à courant continu basse tension, et des ports de sortie étant connectés en série et accédant ensuite à un réseau de distribution d'énergie à courant continu moyenne tension. Le procédé de commande consiste : à commander séparément la puissance d'entrée de chaque convertisseur à trois ports sous-isolés ; à faire appel, au moyen des ports bidirectionnels et des ports de sortie, à une stratégie de commande de chute de tension de puissance basée sur une résistance virtuelle ; à assurer une commande stable de la tension du port bidirectionnel de chaque convertisseur à trois ports sous-isolés ainsi qu'une commande d'égalisation de tension sur la tension du port de sortie de chaque convertisseur à trois ports sous-isolés ; à réaliser une conception modulaire ; et à fournir une solution technique réalisable en ce qui concerne l'accès d'un système de production d'énergie à source d'énergie distribuée dans un réseau de distribution d'énergie à courant continu moyenne tension.
(ZH)
一种分布式电源发电系统的控制方法和控制系统。所述分布式电源发电系统包括N个子隔离三端口变换器和与N个子隔离三端口变换器一一对应的N个独立的分布式直流电源,N为大于1的自然数;每个子隔离三端口变换器的输入端口连接对应的分布式直流电源,双向端口并联连接、构成低压直流母线,输出端口串联连接、再接入中压直流配电网;该控制方法包括:独立控制每个子隔离三端口变换器的输入功率,双向端口和输出端口采用基于虚拟电阻的功率-电压下垂控制策略,实现每个子隔离三端口变换器的双向端口电压的稳定控制和输出端口电压的均压控制,实现模块化设计,为将分布式电源发电系统接入中压直流配电网提供一种可行的技术方案。
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