Title:
INVERTER INDIVIDUAL-PHASE CONTROL AND DISTRIBUTION TRANSFORMER CURRENT UNBALANCE ADJUSTMENT SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/001203
Kind Code:
A1
Abstract:
Disclosed are an inverter individual-phase control and distribution transformer current unbalance adjustment system and method. The inverter individual-phase control and distribution transformer current unbalance adjustment system comprises a distributed power supply and a three-phase full-bridge inverter, the three-phase full-bridge inverter being connected to the distributed power supply, and the three-phase full-bridge inverter being connected to three phase lines by means of a three-phase reactor. When the unbalance degree corresponding to the three phase lines is greater than a preset starting value, three-phase compensation current reference values are obtained according to current three-phase front-end load currents, three-phase back-end load currents and capacitor voltage control components, so that the three-phase full-bridge inverter outputs three-phase compensation currents on the basis of the three-phase compensation current reference values. Therefore, the three-phase full-bridge inverter can output the compensation currents required by the phases of the three phase lines by using the output powers of the distributed power supply, so as to achieve distribution transformer three-phase current unbalance adjustment and control, so that the three-phase currents of a distribution transformer are balanced.
Inventors:
YANG JINDONG (CN)
LIU HONGWEN (CN)
RONG FEI (CN)
QIAN GUOCHAO (CN)
TANG LIJUN (CN)
HUANG JISHENG (CN)
LIU HONGWEN (CN)
RONG FEI (CN)
QIAN GUOCHAO (CN)
TANG LIJUN (CN)
HUANG JISHENG (CN)
Application Number:
PCT/CN2023/075847
Publication Date:
January 04, 2024
Filing Date:
February 14, 2023
Export Citation:
Assignee:
ELECTRIC POWER RES INSTITUTE OF YUNNAN POWER GRID CO LTD (CN)
International Classes:
H02J3/26; H02M5/458
Foreign References:
| CN106532736A | 2017-03-22 | |||
| CN105449709A | 2016-03-30 | |||
| CN115036947A | 2022-09-09 | |||
| CN110323767A | 2019-10-11 | |||
| JP2012120334A | 2012-06-21 | |||
| CN105811440A | 2016-07-27 |
Attorney, Agent or Firm:
SHENZHEN CIPRUN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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