2017, in the household and distributed photovoltaic strong outbreak, China is expected to 5 consecutive years of new photovoltaic installed capacity of the world's first. At present, China's photovoltaic industry has been in just ten years to achieve the European and American developed countries beyond , In terms of size, technology has reached the world's leading.However, it is precisely because the pace of step too fast, so that the photovoltaic industry has been the lack of industry standards, construction is not standardized, lack of after-sales service and other issues, and as an international authority of the third party Testing and certification bodies, the German Rhine TUV Group (hereinafter referred to as: TUV Rheinland) in the development of industry standards, standardize the construction of the industry for China's photovoltaic industry has made great contributions to the development.
Recently, TUV Rhein held in Guangzhou, 'quality wins - photovoltaic power plant risk control and sustainable management forum', OFweek solar photovoltaic network editor invited to participate in the meeting, and had the honor to interview the TUV Rheinland Greater China solar and fuel cell technology services general manager Mr. Li Weichun.
TUV Rheinland Greater China solar energy and fuel cell technology services general manager Li Weichun
Improve the industry standard: TUV Rheinland duty-bound
For China's photovoltaic power generation applications are currently related to the lack of industry standards, Mr. Li Weichun said, photovoltaic power generation applications need a sound industry standards and norms to promote the healthy development of the industry.For example, with a high proportion of photovoltaic power grids, To some new technical challenges, the need for future photovoltaic power plants more intelligent, able to respond to load demand and power grid scheduling; need to configure the energy storage or multi-complementary to smooth output; need to build 'photovoltaic + energy storage' smart micro- Distributed power or energy interconnection; the development and application of these new energy management technologies require a large number of standards as a basis to support the industry to standardize the healthy development.
Since 1982, TUV Rheinland in Cologne, Germany since the establishment of the first photovoltaic laboratory, 35 years TUV Rheinland in Shanghai, China and Taiwan, Japan Yokohama, Bangalore, India, the United States Arizona, respectively, to establish a service in the global photovoltaic laboratory, and invested A large number of technical resources and platform resources, accumulated a lot of test data and technical experience during the local government, for the industry, for the entire photovoltaic vertical industry chain to provide technical support; at the same time we put massive data and technical experience refining and scaling gradually formed industry Standards and specifications, and even converted into IEC international standards.From the initial PV components, components, backplane materials, to the present energy storage, we have never stopped to promote the healthy development of the industry, continue to share our experience and contribution to our Force. TUV Rheinland has the platform resources and technical strength, TUV Rhein to improve the industry standard to promote the development of the industry duty-bound.
'PV + energy storage': the best business model
The development of photovoltaic power generation is inseparable from the support of energy storage technology, for the development of photovoltaic and energy storage, Mr. Li Weichun have very in-depth insights.Li Weichun said that as early as 2012, energy storage applications are still in the embryonic stage, TUV Rhine will pour A lot of energy into the field of energy storage technology; energy storage applications are widely used, can be divided into three directions, the first, household energy storage applications; second, commercial energy storage applications; System energy storage applications, energy storage technology in these three scenarios to play the value is not the same.
In the power system, the value of energy storage is mainly reflected in the maintenance of power system stability and balance. A high proportion of new energy power generation access to the grid, the grid voltage frequency will have a greater volatility, energy storage can play a supplementary service function to assist the power system Peaking FM.
For commercial energy storage applications, energy storage can maximize the value of energy and capacity to help commercial power users to save energy and energy management, especially for distributed photovoltaic power plants, photovoltaic + energy storage model can establish an effective distributed intelligence Microgrid.
For household energy storage, and more combined with the roof of the photovoltaic to form a self-use margin or off-grid household photovoltaic power generation system.If combined with the application of charging piles and electric vehicles, then the light storage The integration of zero-emission home green energy management program will be born, I think the future of such intelligent energy system application scene will be just around the corner.
Although the application of energy storage market is very wide, but the current energy storage process is far from expected, Mr. Li Weichun said that from the energy storage application trends and industry integration point of view, 'PV + energy storage' Is the best way to develop energy storage applications.
PV as the main force of the new energy in the process of continuous development, how to become users and the power grid in the eyes of high-quality, friendly power supply is the primary problem facing the development of photovoltaic, photovoltaic and energy storage is just a solution to this problem.In addition, the high-speed photovoltaic Development has also provided a broad opportunity for the commercialization of energy storage applications. With the increase in the volume of energy storage applications, there will be a clear downward trend in energy storage costs, so energy storage technology is essential for photovoltaic power generation, and photovoltaic power generation It provides a very fit business development path for the energy storage industry, and in the future, PV and energy storage are faced with new challenges, and only the combination is the perfect solution.
In Germany, Japan and Australia, for example, their energy storage development came to the front, but also to 'PV + reserve' model to drive more energy storage applications. 'PV + energy storage' will be the future energy storage applications The mainstream development model.
Cost: the biggest problem facing energy storage
Since the application prospects of energy storage is so good, why China's energy storage industry is still not expected to develop it? Mr. Li Weichun said, according to 2017 TUV Rhine to do a market research results show that the biggest factor restricting the development of energy storage is The price of more than 70.4% of the energy storage industry elite that promote the development of energy storage is the most critical factor in the cost of decline.
In the northwest of China, as the example, if the cost of photovoltaic power was 0.4 yuan, with the energy storage will be the cost of more than 0.6 yuan, then the storage is certainly difficult to develop, but we put The energy value of energy storage, the value of capacity and the role of power system FM control support services all play out, the value of energy storage advantage is reflected.
Foreign energy storage applications in the mainstream market, such as Germany, Japan, North America and Australia, these countries are relatively high electricity prices, so the commercial value of energy storage can be fully reflected in the price is on the one hand, but these countries subsidies for energy storage industry Policy, but also strongly boost the development of the local energy storage industry, one of the reasons.Especially in the early stages of the development of the industry, the government's corresponding industry incentives can quickly start the application market, China 'PV + energy storage' application market is very large, with the technology Enhance the scale of economic efficiency, cost reduction, coupled with the government's policy to boost the energy storage applications will be able to find the opportunity to market, to be energy-saving cost of electricity profits show that the industry will be outbreak.
PV inverter: how is stability and reliability reflected?
The PV inverter is the 'heart' of the entire photovoltaic power plant, whether it is a large ground power plant or a distributed roof PV system. Once the inverter is out of order, the entire power generation system will be completely paralyzed.
On the development of photovoltaic inverter in China, Mr. Li Weichun said that the development of China's photovoltaic inverter industry in 2007, to 2017 a full decade, the domestic photovoltaic inverter industry has been relatively mature, and now at home and abroad Of the photovoltaic inverter brand has been unequivocal, and even some high-power density of high-power group of string inverter has led the global industry level from the technical evaluation point of view, the stability and reliability of the inverter from the energy With the use of, easy to use and durable, TUV Rhein PV inverter for the development of different nodes in the industry to develop a corresponding assessment criteria, introduced the inverter safety, quality and reliable all-round technical assessment program to ensure that users use the certification Of the inverter can be more power, and long-term, stable and reliable power generation, and ultimately protect the owners and investors income.In addition, TUV Rhein strongly advocated 'quality wins China' quality selection, is to guide industry awareness What is a good photovoltaic products, with TUV Rheinland's technological superiority, authority and impartiality can really boost the healthy development of the photovoltaic industry.
Power station quality problems highlighted: how to solve?
In recent years, with the expansion of the scale of photovoltaic power plants, the quality of power plants in China began to highlight what led to the quality of domestic power station problems? How to solve?
Mr. Li said that the PV power plant in the construction and operation of the process there are some quality problems are normal, foreign power plants have a corresponding problem, it must use the experience of third-party institutions to assist the power plant design, construction and operation of the quality It is necessary to intervene in the third stage of the construction of the power station, especially through the design, construction and operation of the third party. The technical service of the power plant can make the PV powerhouse more healthy and the quality is more secure. The whole life of the PV power station The value of the cycle can be maximized.Of course, the situation in China's photovoltaic power plants will be more special, because the '630', '1230' and other rush, design, planning, construction time more urgent, quality risk and technical problems will be more some more.
Secondly, the design, site selection, surveying, construction and operation of the photovoltaic power plant require the corresponding industry standard and technical standard; the second is to meet the quality of the photovoltaic power plant, first, the need for experienced third party institutions to control the quality; TUV Rheinland has been committed to due diligence and quality control of photovoltaic power plants, and has been actively exploring the integration of technology, insurance and financial integration of industrial development model, to promote the photovoltaic industry (R & D), the quality of the control and risk assessment must be strictly in accordance with the corresponding requirements. Healthy and sustainable development and continuous efforts.