A distributed photovoltaic power generation grid-connected measurement and control device

A distributed photovoltaic, measurement and control device technology, applied in the direction of photovoltaic power generation, circuit devices, electrical components, etc., can solve the problems of unable to solve the problem of voltage rise, no local voltage control function, etc., to meet the requirements of two-way billing and power analysis Effect

Active Publication Date: 2019-06-25
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of existing measurement and control devices that do not have local voltage control functions and cannot solve the problem of voltage rise caused by grid-connected distributed power sources, and propose a distributed photovoltaic power generation grid-connected measurement and control device

Method used

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  • A distributed photovoltaic power generation grid-connected measurement and control device
  • A distributed photovoltaic power generation grid-connected measurement and control device
  • A distributed photovoltaic power generation grid-connected measurement and control device

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 As shown, the first data acquisition module in the distributed photovoltaic power generation grid-connected measurement and control device of the present invention is installed at the switch of the public connection point between the distributed photovoltaic power station and the power grid. Distributed photovoltaic power generation grid-connected voltage levels are divided into 10kV and 380V. For users with 10kV grid-connected voltage level, they are generally installed at 10kV photovoltaic grid-connected points; Installed on the user incoming line side.

[0032] Such as figure 2 As shown, the distributed photovoltaic power generation grid-connected measurement and control device of the present invention includes a PLC module, a communication module, a data acquisition module, a switch, a power supply module, a man-m...

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Abstract

A distributed photovoltaic power generation grid-connected measurement and control device includes a PLC module, a communication module, a data acquisition module, a switch, a power supply module and a human-computer interaction interface. The first data acquisition module is connected to the first communication management module through the RS485 interface, the second data acquisition module is connected to the second communication management module through the RJ45 interface, the PLC module is connected to the switch through the RJ45 interface, and the switch communicates with the man-machine interface through the RJ45 interface It is connected with the wireless communication module, and the power module is connected with the PLC module, switch, and man-machine interface to provide 24V DC power for the PLC module, switch, and man-machine interface.

Description

technical field [0001] The invention relates to a distributed photovoltaic power generation grid-connected measurement and control device. Background technique [0002] Compared with the centralized photovoltaic power generation system, the distributed photovoltaic power generation system is generally small in scale (from hundreds of kilowatts to several megawatts), and the location of the power generation devices is dispersed. A large number of distributed photovoltaic power plants connected to the grid can cause power fluctuations in the grid and affect the stable operation of the grid. Therefore, it is necessary to install measurement and control devices to monitor them in real time and accept grid dispatch. [0003] The distributed photovoltaic grid-connected measurement and control device that has been demonstrated includes a CPU module, a data acquisition module, a communication module, and a display interface, but it does not have the voltage control function of the g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/16H02J13/00
CPCH02J3/383H02J13/0075H02J3/16Y04S10/123Y04S40/126Y02B90/20Y02E10/56Y02E40/30Y02E40/70Y02E60/00
Inventor 侯彦娇杨子龙王一波
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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