Henan Expressway Development Co., Ltd. using solar photovoltaic technology, successfully implemented in even the Huo highway full of solar-powered video surveillance system demonstration project, monitor the power grid to solve the highway construction costs are high, the line loss of large power low utilization problem explored a new way. After nearly five years of actual operation, that the program mature and reliable technology demonstration projects, compared with the power supply, power supply and distribution project to save construction investment 58.3%, with an average savings of 31,300 yuan per kilometer; 5 years to save electricity 220 000 yuan, 960,000 yuan gasoline to reduce carbon dioxide emissions by 402 tons, obviously. It is understood that, with the Henan expressway network gradually, to develop and implement contingency plans to reduce traffic congestion, prevent accidents, improve service levels, Henan Expressway Development Co., Ltd. decided to even the (shipments) Huo (Seoul fruit Slovakia) Highway Zhengzhou and Luoyang jurisdiction within 220 kilometers of roads throughout the implementation of monitoring. To expand the scope to monitor the effective implementation of the entire monitoring interval field to set the camera about 2 km, in a non-linear concentration distribution, the use of a network of power supply, there is a large line loss, the high cost of construction investment , construction and operation and maintenance cost complex problem. Meanwhile, the road to be implemented without interrupting operation of the road widening project on both sides (4 to change eight), the camera needs to be set outside the field in the central isolation belt. If the central isolation belt laying power cable, the impact of communications and other weak signal. Therefore, the camera power supply problem as the project implementation unit facing difficult problems. Solar energy is an inexhaustible supply of clean and environmental ly friendly Energy The use of solar photovoltaic technology to convert solar energy into electrical energy, is now widely applied in aerospace, weather stations, remote sensing, navigation beacon, railway signals, communications and remote areas, island residents of the areas of power supply. Solar photovoltaic technology to provide a solution to these problems. And central Henan Province, Zhengzhou and Luoyang Road is located at 34.7 degrees north latitude, the annual sunshine from 2000 to 2600 hours, an average annual sunshine rate of 45% to 55%, the total annual solar radiation from 110 to 125 kcal / square centimeter, the average daily along irradiation time of about 4.1 hours, are three regions in the solar energy resources, solar energy resource rich area. Thus, Luo Lu Zheng monitor the entire process to achieve good solar natural conditions. Thus, according to Luo Lu Zheng actual needs full control, from an economic, energy saving, environmental protection, to shorten the duration of the point of view, even Huo Zhengzhou to Luoyang expressway section of the road monitor the use of solar power supply system for the full range of 100 sets of video surveillance cameras for power. Key equipment to improve power generation efficiency optimization Entire solar-powered highway monitoring system consists of solar arrays, batteries, solar charge and discharge controller, inverter, transformer, video cameras and other equipment Optical component. Solar photovoltaic system components through the solar radiation in sunlight produces photovoltaic current for the electric load to provide electrical energy. Solar cell produces a current through the load charge and discharge controller on one hand, the direct supply, the other hand, the excess energy stored in the battery light is insufficient to prepare for power to the load. AC load through the inverter, transformer into the AC power applied. In response to adverse weather conditions caused by battery power shortage, the system can be configured from the power mains or emergency charging interfaces. In order to improve the reliability of power supply system, photovoltaic systems by Optical will upload real-time operating status to the monitoring center so that timely measures taken by artificial maintenance. Solar photovoltaic technology in the road transport sector is the main obstacle to the application of the applicability of the load power supply, how to combine the highway full load characteristics of power monitoring system, optimizing power system design, reduce the electricity load power consumption, improve the efficiency of solar power generation system is the key technical aspects of the project. Therefore, the main components of the project were as follows for system optimization. Camera: solar power system to reduce the initial investment cost, traffic monitoring and image quality to meet the requirements of the premise, after testing and research on the spe cific request of the camera, power consumption, and technological improvements, will be a work around the clock with The camera's rated power limited to less than 30 watts and 24 volt DC power supply.
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