Title:
CONTROL SYSTEM OF DIRECT-CURRENT ENERGY CONSUMPTION DEVICE AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/088502
Kind Code:
A1
Abstract:
A control system of a direct-current energy consumption device and a control method therefor. The system comprises a flexible direct-current control protection system and an energy consumption device control system. The control method comprises the following steps: the flexible direct-current control protection system collects alternating/direct-current signals and equipment operation states of a flexible direct-current power transmission system and sends a direct-current energy consumption on-off instruction and surplus power to the energy consumption device control system when an alternating-current system breaks down and satisfies on-off conditions; if the communication is normal, the energy consumption device control system inputs energy consumption power in combination with the state of the energy consumption device according to a direct-current energy consumption on-off instruction and a surplus power value sent by the flexible direct-current control protection system; and if the communication fails, the energy consumption device control system inputs energy consumption power as required according to direct-current voltage and current signals acquired by the energy consumption device control system. According to the method, the required energy consumption power can be accurately input according to different fault types and communication states of the control system, the direct-current voltage in the fault period is stably controlled, and the stability and reliability of the power transmission system are improved.
Inventors:
LI GANG (CN)
LI HAIYING (CN)
LU YU (CN)
DONG YUNLONG (CN)
WANG XIANRONG (CN)
ZOU KAIKAI (CN)
LI JIANCHUN (CN)
HU XIANLAI (CN)
LI HAIYING (CN)
LU YU (CN)
DONG YUNLONG (CN)
WANG XIANRONG (CN)
ZOU KAIKAI (CN)
LI JIANCHUN (CN)
HU XIANLAI (CN)
Application Number:
PCT/CN2020/113882
Publication Date:
May 14, 2021
Filing Date:
September 08, 2020
Export Citation:
Assignee:
NR ENGINEERING CO LTD (CN)
NR ELECTRIC CO LTD (CN)
NR ELECTRIC CO LTD (CN)
International Classes:
H02J3/36; H02J3/12
Foreign References:
| CN110932304A | 2020-03-27 | |||
| CN107834588A | 2018-03-23 | |||
| CN108233346A | 2018-06-29 | |||
| CN109861269A | 2019-06-07 | |||
| CN107181274A | 2017-09-19 | |||
| CN108539796A | 2018-09-14 | |||
| DE102018008224A1 | 2019-04-11 | |||
| US20120086415A1 | 2012-04-12 | |||
| CN108258723A | 2018-07-06 | |||
| CN107994613A | 2018-05-04 |
Other References:
See also references of EP 4047774A4
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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