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Distributed photovoltaic power generation grid-connected measuring and controlling 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: 2017-03-22
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Distributed photovoltaic power generation grid-connected measuring and controlling device
  • Distributed photovoltaic power generation grid-connected measuring and controlling device
  • Distributed photovoltaic power generation grid-connected measuring and controlling 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

The invention discloses a distributed photovoltaic power generation grid-connected measuring and controlling device, which comprises a PLC module, a communication module, data acquisition modules, a switch, a power module and a man-machine interaction interface, wherein the first data acquisition module is connected with a first communication management module via an RS485 interface; the second data acquisition module is connected with a second communication management module via an RJ45 interface; the PLC module is connected with the switch via the RJ45 interface; the switch is in communication connection with the man-machine interface and the wireless communication module via the RJ45 interface; and the power module is connected with the PLC module, the switch and the man-machine interface and provides 24V DC power for the PLC module, the switch and the 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 Applications(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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