Abstract: The fully-automatic closed-loop detection method includes: comparing a SCD file of a to-be-tested substation with a device-type data template file, so as to determine whether configuration information about the to-be-tested substation is correct; when the configuration information about the to-be-tested substation is correct, parsing the SCD file of the to-be-tested substation and generating a SSD topological diagram of the to-be-tested substation; and acquiring a testing item from a predetermined testing item library in accordance with the SSD topological diagram of the to-be-tested substation, generating a testing scheme for the to-be-tested substation, performing a testing operation and outputting a testing result.
Type:
Grant
Filed:
January 22, 2019
Date of Patent:
May 10, 2022
Assignees:
STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, WUHAN KEMOV ELECTRIC CO., LTD, STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE CO., LT D
Abstract: The fully-automatic closed-loop detection method includes: comparing a SCD file of a to-be-tested substation with a device-type data template file, so as to determine whether configuration information about the to-be-tested substation is correct; when the configuration information about the to-be-tested substation is correct, parsing the SCD file of the to-be-tested substation and generating a SSD topological diagram of the to-be-tested substation; and acquiring a testing item from a predetermined testing item library in accordance with the SSD topological diagram of the to-be-tested substation, generating a testing scheme for the to-be-tested substation, performing a testing operation and outputting a testing result.
Type:
Application
Filed:
January 22, 2019
Publication date:
June 6, 2019
Applicants:
STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, WUHAN KEMOV ELECTRIC CO., LTD, STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE CO., LT D
Abstract: A system for staring a large-scale power load in a micro grid comprises a PCC grid connection switch, a micro grid alternating-current bus, an active power filter (APF), an energy storage inverter, an energy storage battery, a current-limiting resistor R, contactors K1-K3, a time relay KT, a power supply relay board, a micro grid maser control system, a frequency converter rectifying circuit, a frequency converter filter circuit, and a frequency converter inverter circuit. There are the advantages: an output torque of a power load can be effectively improved by using a variable frequency starting apparatus, and a starting current is also small; the provided method can effectively reduce a harmonic current when a variable frequency starting apparatus starts a power load, the phenomenon that two power sources supply power on a direct-current side of the variable frequency starting apparatus at the same time is avoided, thereby improving the stability and the economy of a micro grid.
Type:
Grant
Filed:
June 24, 2014
Date of Patent:
January 30, 2018
Assignees:
STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE, HEBEI ELECTRIC POWER COMMISSIONING INSTITUTE, STATE GRID CORPORATION OF CHINA
Abstract: A system for staring a large-scale power load in a micro grid comprises a PCC grid connection switch, a micro grid alternating-current bus, an active power filter (APF), an energy storage inverter, an energy storage battery, a current-limiting resistor R, contactors K1-K3, a time relay KT, a power supply relay board, a micro grid maser control system, a frequency converter rectifying circuit, a frequency converter filter circuit, and a frequency converter inverter circuit. There are the advantages: an output torque of a power load can be effectively improved by using a variable frequency starting apparatus, and a starting current is also small; the provided method can effectively reduce a harmonic current when a variable frequency starting apparatus starts a power load, the phenomenon that two power sources supply power on a direct-current side of the variable frequency starting apparatus at the same time is avoided, thereby improving the stability and the economy of a micro grid.
Type:
Application
Filed:
June 24, 2014
Publication date:
October 6, 2016
Applicants:
STATE GRID CORPORATION OF CHINA, STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE, HEBEI ELECTRIC POWER COMMISSIONING INSTITUTE