WO2022217457A1 - 一种供电***及拓扑检测方法 - Google Patents
一种供电***及拓扑检测方法 Download PDFInfo
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- WO2022217457A1 WO2022217457A1 PCT/CN2021/086961 CN2021086961W WO2022217457A1 WO 2022217457 A1 WO2022217457 A1 WO 2022217457A1 CN 2021086961 W CN2021086961 W CN 2021086961W WO 2022217457 A1 WO2022217457 A1 WO 2022217457A1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
- H02J3/0012—Contingency detection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
Definitions
- the topology detection device can issue a bus disturbance command to the target reference device in the power supply system, so as to generate voltage disturbance on the bus connected to the target reference device; then the topology detection device can be used in the power supply system.
- the topology detection device determine whether the voltage disturbance frequency of the bus connected to each device to be grouped is greater than the set frequency threshold; the final topology detection device can obtain the voltage disturbance frequency and set frequency of the bus connected to the multiple devices to be grouped.
- the relationship between the thresholds is used to determine whether the target reference device and the target band grouped device are connected to the same bus.
- the topology detection device can identify the topology structure between the devices to be grouped and the bus in the power supply system through the change of the bus disturbance.
- the present application provides a topology detection method, which is applied to the topology detection device described in the first aspect.
- the method includes: acquiring initial busbar voltages and current busbar voltages of buses connected to a plurality of devices to be grouped; The difference between the initial bus voltage of the bus connected to the grouping device and the current bus voltage of the buses connected to multiple devices to be grouped determines whether the target reference device and the target device to be grouped are connected to the same bus.
- FIG. 4 is a schematic structural diagram of another power supply system
- the target reference device is configured to receive the busbar disturbance command, and execute a voltage disturbance action according to the busbar disturbance command, so as to generate voltage disturbance on the busbar connected to the target reference device.
- the host device selects a target photovoltaic power converter from at least one photovoltaic power converter, and issues a bus disturbance instruction to the target photovoltaic power converter, where the bus disturbance instruction is used to notify the target reference device that the connected Voltage disturbances continue to occur on the bus.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
Claims (12)
- 一种供电***,其特征在于,所述供电***中包括多台待分组设备以及至少一条母线,在每条母线上连接至少一台待分组设备,所述待分组设备包括:功率变换器以及逆变器,所述功率变换器用于将直流电输出到逆变器,所述逆变器用于将直流电逆变成交流电传输到电网;所述多台待分组设备中的任一待分组设备,用于:向拓扑检测设备上报所连接母线的初始母线电压;以及在所述拓扑检测设备向目标参***下发母线电压调整指令后,向所述拓扑检测设备上报所连接母线的当前母线电压,所述目标参***为所述供电***中的任一待分组设备,所述拓扑检测设备为所述供电***中的任一设备,所述母线电压调整指令用于通知所述目标参***调整所连接母线的电压;所述目标参***,用于接收所述母线电压调整指令,根据所述母线电压调整指令调整所连接母线的电压;所述拓扑检测设备,用于获取所述多台待分组设备所连接母线的初始母线电压和当前母线电压,根据所述多台待分组设备所连接母线的初始母线电压和所述多台待分组设备所连接母线的当前母线电压之间的差值确定所述目标参***和所述目标待分组设备是否连接在同一母线。
- 根据权利要求1所述的供电***,其特征在于,所述拓扑检测设备还用于:在获取所述多台待分组设备所连接母线的初始母线电压之前,向每台待分组设备下发母线复位指令;其中,所述母线复位指令用于通知每台待分组设备将所连接母线的电压调整至预设电压;所述多台待分组设备中的任一待分组设备还用于:接收所述母线复位指令,根据所述母线复位指令将所连接母线的电压调整至预设电压。
- 根据权利要求1或2所述的供电***,其特征在于,所述目标参***还用于:在将所连接母线的电压由第一母线电压调整为第二母线电压后,向所述拓扑检测设备发送电压调整完成消息;所述拓扑检测设备还用于:在获取所述多台待分组设备所连接母线的当前母线电压之前,接收所述目标参***发送的所述电压调整完成消息;其中,所述电压调整完成消息用于通知所述目标参***所连接母线的电压由第一母线电压调整为第二母线电压,所述第二母线电压与所述第一母线电压不同。
- 根据权利要求3所述的供电***,其特征在于,所述第二母线电压与所述第一母线电压的差值大于设定阈值;或者所述第二母线电压与所述第一母线电压的比例为设定比例值。
- 根据权利要求1-4任一所述的供电***,其特征在于,所述功率变换器包括以下至少一种:光伏功率变换器以及储能功率变换器。
- 一种供电***,其特征在于,所述供电***中包括多台待分组设备以及至少一条母线,在每条母线上连接至少一台待分组设备,所述待分组设备包括:功率变换器以及逆变器,所述功率变换器用于将直流电输出到逆变器,所述逆变器用于将直流电逆变成交流电传输到电网;所述多台待分组设备中的任一待分组设备,用于在拓扑检测设备向目标参***下发 母线扰动指令后,向所述拓扑检测设备上报所连接母线上电压扰动频率,所述目标参***为所述供电***中的任一待分组设备,所述拓扑检测设备为所述供电***中的任一设备,所述母线扰动指令用于通知所述目标参***在所连接母线上持续产生电压扰动;所述目标参***,用于接收所述母线扰动指令,根据所述母线扰动指令执行电压扰动动作,使所述目标参***所连接母线上产生电压扰动;所述拓扑检测设备,用于获取所述多台待分组设备所连接母线的电压扰动频率,根据所述多台待分组设备中确定所连接母线的电压扰动频率与设定频率阈值之间的关系确定所述目标参***和所述目标待分组设备是否连接在同一母线。
- 根据权利要求6所述的供电***,其特征在于,所述目标参***还用于:在根据所述母线扰动指令执行电压扰动动作之后,向所述拓扑检测设备发送扰动产生完成消息;所述拓扑检测设备还用于:在获取所述多台待分组设备所连接母线的电压扰动频率之前,接收所述目标参***发送的所述扰动产生完成消息;其中,所述扰动产生完成消息用于通知所述目标参***所连接母线的产生电压扰动。
- 根据权利要求6或7所述的供电***,其特征在于,所述目标参***所连接的母线的电压扰动频率大于所述设定频率阈值。
- 根据权利要求6-8任一所述的供电***,其特征在于,所述拓扑检测设备,还用于:在获取所述多台待分组设备所连接母线的电压扰动频率后,向所述目标参***下发取消母线扰动指令,所述取消母线扰动指令用于通知所述目标参***在所连接母线上不再产生电压扰动。
- 根据权利要求6-9任一所述的供电***,其特征在于,所述功率变换器包括以下至少一种:光伏功率变换器以及储能功率变换器。
- 一种拓扑检测方法,其特征在于,应用于如权利要求1-5任一所述的拓扑检测设备,所述方法包括:获取多台待分组设备所连接母线的初始母线电压和当前母线电压;根据所述多台待分组设备所连接母线的初始母线电压和所述多台待分组设备所连接母线的当前母线电压之间的差值确定目标参***和目标待分组设备是否连接在同一母线。
- 一种拓扑检测方法,其特征在于,应用于如权利要求6-10任一所述的拓扑检测设备,所述方法包括:获取多台待分组设备所连接母线的电压扰动频率;根据所述多台待分组设备中确定所连接母线的电压扰动频率与设定频率阈值之间的关系确定目标参***和目标待分组设备是否连接在同一母线。
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CN202180096728.7A CN117157847A (zh) | 2021-04-13 | 2021-04-13 | 一种供电***及拓扑检测方法 |
PCT/CN2021/086961 WO2022217457A1 (zh) | 2021-04-13 | 2021-04-13 | 一种供电***及拓扑检测方法 |
EP21936351.2A EP4318844A1 (en) | 2021-04-13 | 2021-04-13 | Power supply system and topology detection method |
AU2021440192A AU2021440192A1 (en) | 2021-04-13 | 2021-04-13 | Power supply system and topology detection method |
US18/484,724 US20240039278A1 (en) | 2021-04-13 | 2023-10-11 | Power supply system and topology detection method |
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CN117175572A (zh) * | 2023-09-08 | 2023-12-05 | 北京佳悦灏源科技有限公司 | 一种基于hplc载波信号结合的拓扑识别方法 |
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2021
- 2021-04-13 CN CN202180096728.7A patent/CN117157847A/zh active Pending
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- 2021-04-13 AU AU2021440192A patent/AU2021440192A1/en active Pending
- 2021-04-13 WO PCT/CN2021/086961 patent/WO2022217457A1/zh active Application Filing
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Cited By (2)
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CN117175572A (zh) * | 2023-09-08 | 2023-12-05 | 北京佳悦灏源科技有限公司 | 一种基于hplc载波信号结合的拓扑识别方法 |
CN117175572B (zh) * | 2023-09-08 | 2024-04-02 | 北京佳悦灏源科技有限公司 | 一种基于hplc载波信号结合的拓扑识别方法 |
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US20240039278A1 (en) | 2024-02-01 |
EP4318844A1 (en) | 2024-02-07 |
AU2021440192A1 (en) | 2023-11-02 |
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