In March 2018, the state energy administration issued the guidance on energy work for 2018, which clearly stated that it would continue to focus on the deep poverty areas, implement the "13th five-year" photovoltaic poverty alleviation plan, strengthen the management of photovoltaic poverty alleviation projects, and ensure the steady and orderly implementation of the work. In addition, the scale of the village-level photovoltaic poverty alleviation power station is about 15 million kw, benefiting about 2 million poverty-stricken households with registered CARDS. In the face of the 2020 deadline, 2018 is also known as the "key year to tackle poverty".
Photovoltaic (pv) as one of the top ten precise poverty alleviation project for poverty alleviation, both from the country, the photovoltaic industry and poor people's perspective, is a good thing, but frequent outbreaks of power station, but make pv poverty alleviation "eat less than the mouth's flesh", lack of standards, quality problems, unfunded, operational disorder as "tang's monk" four) their "protection". Especially under the idea of reconstructing and lightening operation and maintenance of photovoltaic poverty alleviation power station, the photovoltaic power station can not successfully complete the mission of continuous "hematopoiesis" in its 25-year life even though it has ensured the completion of high quality in the early stage.
Lack of operation and maintenance has become the key to restricting the benefits of poverty alleviation
In rural areas, especially the operation and maintenance consciousness of the owners of photovoltaic poverty-alleviation power stations is obviously weak. According to the investigation, some photovoltaic poverty-alleviation power stations have been uninspected for a long time, which has resulted in overgrowth of weeds on the site, formation of shielding and long-term uncleaning of the panels, which has greatly affected the power generation effect. Serious problems such as clothes drying and crops drying on the photovoltaic panels pose a danger to the safety of the photovoltaic power station. In addition, some poor households lack relevant operation and maintenance knowledge, skills and ability, resulting in the absence of on-site records and inspection, etc., which makes it difficult to timely maintain the photovoltaic power station.
On the other hand, most of the photovoltaic poverty alleviation projects are in remote rural areas, which is inconvenient for transportation. In particular, the household distributed photovoltaic points are wide in many aspects and distributed sporadically. As a result, the specialized operation and maintenance team cannot carry out large-scale operation and maintenance and cannot guarantee timely response. As a result, there is a shortage of professional operation and maintenance personnel in the photovoltaic power station, which can cost hundreds or thousands of dollars at any time, which will also make poor households feel unsatisfied.
In addition, according to the investigation report of hebei poverty alleviation project, the power quality of rural power network in some areas is poor, and the frequent trip of inverter equipment has become the hard injury of operation and maintenance.
In view of various problems, experts in the industry suggest that more efforts should be made to promote popular science and improve people's knowledge of photovoltaic operation and maintenance. In addition to the transformation of agricultural network, the provision of professional operation and maintenance personnel, and the application of operation and maintenance platform and other information-based means, in view of the actual situation and difficulties of poverty alleviation of photovoltaic, as a photovoltaic enterprise, the optimization and matching of photovoltaic power stations can be carried out from the perspective of the system, said Yin chengqing, chief engineer of shenzhen chuangdong technology co., LTD.
Take the example of the "heart" inverter of the photovoltaic system. For a 300kW photovoltaic poverty alleviation power station, the common solution is to combine 50kW or 60kW inverters. Then a power station needs to install 5-6 inverters. If the 300kW photovoltaic inverter developed by chuangdong technology is used, there is only one equipment in the whole power station, which is very simple. It can not only save the junction box, but also simplify the wiring, which can reduce the possible problems such as the mixing of cables and the exposed cables and make the operation and maintenance relatively simple.
Quality is always an inalienable dignity
If the operation and maintenance quality is the necessary process to realize the "long-distance running" of the power station, the quality of the power station itself is the precondition of "long-distance running". It is indispensable for photovoltaic poverty alleviation to play its due role.
As an important component of energy and benefiting the people, photovoltaic poverty alleviation has made certain achievements in the development of recent years. More and more "jinzhai model" has emerged to create sunshine benefits for the poor. But on the other side of the coin, problems of varying degrees, such as poor construction quality and poor equipment quality in some power stations, are also being exposed.
Recently, a fire of video of a village-level photovoltaic poverty-alleviation power station has caused wide discussion among people in the industry. In video, the entire photovoltaic power station is almost burnt out, with only a portion of the support supporting it scattered. Although the true cause of the fire has not yet been revealed, the accident has again warned the industry to attach great importance to the quality of photovoltaic poverty alleviation projects.
It is reported that due to the small scale and scattered construction of photovoltaic poverty alleviation power stations, the participation of large leading enterprises is relatively low. The usual way is to invite bids from county units at a lower price. This approach has led some inexperienced start-ups to lower equipment costs and even to adopt low-quality photovoltaic modules and inverters in order to win bids at low prices. This is a clear violation of the original intention of poverty alleviation, Yin said. For photovoltaic poverty-alleviation power stations, which have difficulties in initial financing, the impact on the poor households will be great once the photovoltaic power station has an accident, which is obviously not poverty alleviation but poverty alleviation. A fire can also threaten people's safety.
So, how should the photovoltaic enterprises break through the barrier under the gradual tightening of the price reduction space and the requirements of high quality and high yield standards? Yin said innovation is still needed to reduce costs and increase efficiency. He further explained that the 300kW special anti-poverty inverter developed by chuangdong technology, also taking inverter as an example, can save 0.2 yuan /W in the construction cost of the power station due to the fact that there is no need for the junction box, few types of cables and simple construction.
With a systematic thinking, the realization of cost reduction and efficiency increase is becoming the focus of many photovoltaic enterprises.
Protect "two qualities" with intelligent means
On April 19, 2018, six departments jointly issued the action plan for the development of smart photovoltaic industry (2018-2020), which officially put smart photovoltaic on the agenda. In fact, the photovoltaic operation and maintenance has already had the trend of intelligence, many enterprises have launched the intelligent operation and maintenance platform, in order to solve the photovoltaic power station in the daily operation and maintenance problems.
"To improve the quality of photovoltaic poverty-alleviation power stations, it is necessary to adopt intelligent methods," Yin said. In other words, even if the inspection costs a lot, it is only a sampling inspection. In this case, if the inspection is carried out by unmanned aerial vehicles, problems such as hot spots can be detected quickly, so as to ensure the quality of the power station.
Of course, when it comes to drones, many people find them complex, requiring professional pilots, and expensive. According to Yin, this is also a proposition under intelligence. For the uav developed by chuangdong technology, there is no need for professional flying hands to take off with one key. Since the uav can easily and quickly complete the inspection of the whole photovoltaic power station, saving manpower and material resources, it can reduce the operation and maintenance cost. Take the 50MW photovoltaic power station as an example. It used to require 12 people for operation and maintenance, but now it only needs 6 people.
"The photovoltaic poverty alleviation power station may be located in some places with complex terrain, such as mountainous hills and hills, where human inspection will be difficult, but it will be much easier for drones," said Yin. For example, there may be high pressure lines or high trees over the village, which requires planning the route of the drone ahead of time to avoid these obstacles.
According to the national energy administration, scientific research institute of the country's 126000 funding do preliminary assessment, about 50000 villages across the country to building photovoltaic power station for poverty alleviation, and with the village-level power station was established as the only form of photovoltaic (pv) poverty alleviation, in each calculation of 300 kw cost 1 million - 2 million village-level photovoltaic power station total market scale will reach 50 billion - 100 billion yuan. Behind the hundreds of billions of dollars of market, it is a "required question" faced by every enterprise involved in poverty alleviation of photovoltaic industry to protect the two quality levels of photovoltaic power station and operation and maintenance, protect the effective operation of photovoltaic power station and complete the poverty alleviation task of photovoltaic power station.