Design Of Distributed Generation Power Monitoring And Trading System

With the growing depletion of fossil energy,the environmental problems brought by burning have aroused people’s concern increasingly,the new sources of energy is badly in need of the development.In the12th five-year plan,it clearly puts forward to strengthen the investment in new energy,especially the photovoltaic industry with a series of supporting policies and capital investment,the distributed photovoltaic market will get a rapid development.However,there is not a set of perfect system implementation of remote monitoring and online transacting,in order to realize these,this paper designs a remote electric power monitoring and trading system.The contents are as follows:By reading lots of domestic or foreign literature and making a deep research in the existing distributed photovoltaic generation system structure,a kind of dc bus type with reflux and battery power generation system structure is put forward,and the power monitoring and trading system is built based on this structure.Using intelligent single-phase watt-hour meter as electricity signal acquisition terminal,the acquisition of various signals are transferred to the485/USB converter through485bus,which using the MODBUS-RTU communication protocol,then the signals are sent from converter to the PC to read;The MCU receives control instructions from PC through XBee wireless transmission module to control field devices;The program is written and download by using soft programming technology through bootstrap in the BOOT area of MCU.Through graphical program language and use toolkit and function module from LabVIEW development platform can make a strong visual interface to realize the power display,storage,query and transaction;The login and system front panel are released to Internet through the WEB publishing technology to realize remote access and operate system.The system can implement electricity signals collection,transmission,display and storage,the control commands can also be sent to the field through wireless transmission effectively,the user an access and manipulate the remote control system at anytime and anywhere.It is convenient for user to operate and it can provide some valuable references for monitoring and trading of distributed photovoltaic system.