If we divide the life cycle of photovoltaic power plants into 25 years according to input and recovery, the previous site selection, design, equipment selection and construction of the power station are inputs, which only take about half a year. The income of the power station in the later period will be obtained through the operation and maintenance of the power station for more than 20 years. The importance of the operation and maintenance of the photovoltaic power station is thus evident.
Affected by the reduction of the on-grid PV tariff, more and more owners began to optimise power plants and increase power generation through photovoltaic operation and maintenance, and the operation and maintenance market followed the development. In the first half of 2016, domestic new photovoltaic installations exceeded 22GW, cumulative installed capacity exceeded 63GW, photovoltaic operation and maintenance (data collection + operation and maintenance) accounted for approximately 1% of the cost of the power plant, and the cost of the photovoltaic power plant was 7.2 yuan/w. The operation and maintenance cost was approximately At 0.072 yuan/w, the scale of the operation and maintenance market exceeded 4 billion yuan.
With favorable market conditions, the performance of PV operation and maintenance companies also performed well. According to the introduction of Qingdao Sanas Intelligent Technology Co., Ltd., by the end of 2016, the total operation and maintenance of the solar power plant in Sanars amounted to 1.2 GW, and the total actual monitoring access volume was 2 GW. Sanars called the 1.2 GW operation and maintenance capacity. For the small goal, behind the accomplishment of the small goal, the operation and maintenance of the enterprise is consistent with the continuous development of the market.
Photovoltaic Power Plant's "Operation" and "Dimensionality"
In recent years, with the continuous development of photovoltaic industry, the goal of photovoltaic operation and maintenance is also changing. During the “Golden Sun†project from 2009 to 2013, most of the PV operation and maintenance were in the initial stage of the inspection equipment integrity and the eradication of the board; from 2013 to 2015, the photovoltaic operation and maintenance under the subsidy of electricity was turned on to the power station. The stage of revenue; Since 2015, the operation and maintenance of photovoltaic power plants has been further refined to move toward the asset management of power plants.
In the initial stage of PV operation and maintenance, the operation and maintenance methods are relatively simple. The operation and maintenance are mainly embodied in the cleaning components and inspection power stations. At that time, the manual cleaning of the cleaning panels was not only laborious, but also increased labor costs. According to the introduction of photovoltaic operation and maintenance companies, the cost of traditional manual cleaning or semi-automatic mechanical cleaning is approximately 2–25,000 yuan/time per 10MW. The inspection of photovoltaic power plants is a big project, especially in the northwest region, the power plant scale of 100 megawatts, which takes nearly one month. If the equipment needs replacement and maintenance, the operation and maintenance time will be further extended, and the photovoltaic power generation capacity will be large. discount.
In the past two years, due to the further catalysis of “Internet+â€, photovoltaic power station operation and maintenance has been moving toward intelligence, and advanced equipment such as photovoltaic cleaning robots and drones has emerged. The operation and maintenance model adopted by photovoltaic companies has also become more diversified. Emerging solutions such as simply providing monitoring systems, providing solutions such as inverters, and intervening from the beginning of power plant construction, provide integrated services such as plant monitoring and operation and maintenance. Operation and maintenance companies are involved in many fields such as equipment, software and communications.
Sanas entered the photovoltaic field in 2010. In response to the continuous changes in the photovoltaic market over the past 6 years, Sanas has gradually formed a photovoltaic power plant life cycle management system, covering the selection of photovoltaic power stations, selection of power station equipment, construction of power stations, and monitoring after the completion of power stations. , inspection and maintenance, etc., through the online and offline linkage mode, the power plant management.
Complex terrain, difficult-to-reach frequency of inspections, and blind spots for manual inspections have become hotbeds for power station failures. In this regard, Sanas has independently developed and customized a drone to complete the inspection work. Not long ago, Sanas's independently developed drones completed the annual inspection of all power stations. According to the Sana's staff, the 1GW of the UAV inspection module used the 40MWp photovoltaic project in Qingdao as an example. The inspection lasted 7 days, which was 300% more than the average manual inspection efficiency. (Normal 40MW power station manual inspection Detection time is about 30 days). In the future, the scrutiny of the Sanas drone will formally enter the normal inspection from the experimental stage.
How to refine the photovoltaic operation and maintenance?
With the increasing demands of power plant owners for the refinement of power plants, the operation and maintenance of photovoltaic power plants also needs to be more detailed. However, in the current operation and maintenance market, problems such as difficult operation and maintenance processes, unprofessional operation and maintenance teams, and difficulty in quantification of operation and maintenance achievements have seriously hampered the development of the operation and maintenance market, and hindered the refinement of power station management.
For the pain points in the above industries, Sanars adopts a dual-sector check-and-balance management model. Through the checks and balances between the management and control department and the operation and maintenance department, the operation and maintenance department performs centralized and distributed operation and maintenance according to the project, and each project is involved in the process of project implementation and implementation. All special technical teams have continued to follow up. The management and control department has adopted the principle of cost reduction and revenue increase. It has set up a system, safety and cost control, and has used the independently developed monitoring and operating platform to implement periodic supervision and inspection of the operation and maintenance department, formulate standards and supervise implementation. Minimize the security risks in the operation and maintenance process, and ensure that the operation is in compliance with regulations.
From the traditional human-oriented operation and maintenance mode to the human-aided intelligent operation and maintenance, operation and maintenance personnel are indispensable, but there are also defects to a certain extent. The improper operation and maintenance personnel will affect the effect of the operation and maintenance of the PV. At present, some O&M companies in the industry have formulated relevant operation and maintenance manuals and management standards to standardize the operation and maintenance processes of photovoltaic power plants.
According to the Sana's staff, Sanas took the intelligent power plant equipment without blind spot data collection and monitoring video operation visualization. In addition, the content of inspections and inspections are included in the code, and all operation and maintenance personnel take a standardized template to inspect, clarify the contents of the inspection, and avoid omissions.
The operation and maintenance of photovoltaic power plants is based on the safety of power stations. According to reports, Sanars started professional safety training and exercises from the beginning of its operation and maintenance team in 2011. By 2016, it has established a complete set of mature safety management and control systems. Safety professional posts have received better support in the aspects of safety prevention, safety training, safety review, technical support, and remote diagnosis of power stations. By the end of 2016, a total of 384 safety trainings and 162 safety drills were organized throughout the year, covering transformer training, switching operation procedures, emergency plans, personnel electric shock simulation exercises, and fire safety drills.
A few days ago, the National Development and Reform Commission issued a document. Since January 1, 2017, China's photovoltaic benchmarking on-grid tariff has been further lowered. The three types of resource areas have been charged at 0.65, 0.75, and 0.85 yuan/kWh respectively, which means that China's PV is closer to parity Internet access. One step, at the same time, means that the owners of the power station will receive further shocks.
For the photovoltaic operation and maintenance companies, opportunities and challenges coexist in 2017. The relevant person in charge of Sanas said that in 2017, Sanas will continue to plow in the aspects of operation and management, safe operation, technical guidance, and power generation and efficiency improvement, and continue to escort the benefits of the owners of the power station.
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