At the “Second Wind and Solar Energy Storage Innovation Development Forum” held recently, a number of experts and scholars focused on the theme of “Integration of Wind and Solar Energy Storage under the New Power System to Build New Business Forms”, guided by policies and technologies, and focused on analyzing the new power system. , The main problems and solutions faced by the implementation of "new energy + energy storage", and provide suggestions and suggestions for the construction of a new power system and the goal of carbon peaking and carbon neutrality.
Digital revolution
Enable new power system
A large number of new energy sources will put greater pressure on the stable operation of the power grid. How to ensure the stability and safety of the new power system?
Du Xiangwan, academician of the Chinese Academy of Engineering, suggested that smart grids and distribution networks should be vigorously developed. "Digital technology can improve the data collection, analysis, and application capabilities of the power grid, and promote the intelligentization of all aspects of the power system, making the power grid observable, measurable, and controllable."
In the face of huge changes in the power system and overall energy structure, energy companies, especially power generation companies, are also actively looking for ways to solve the negative impact of the unstable characteristics of renewable energy.
He Yongjian, Director of the Strategic Planning Department of the Power Investment Group believes that the era of the digital energy revolution has come, and the blessing and empowerment of digitalization can provide support for the carbon neutrality of the entire society. "New energy combined with the empowerment of comprehensive wisdom will produce greater value, which is more conducive to the development of new energy."
Experts at the conference believe that the future energy system will take multiple forms of energy such as electricity and heat as the carrier, and will be characterized by the deep integration of energy technology and information technology to achieve mutual complementarity and safe and efficient use of energy.
"Digital technology will play a very important role in the underlying infrastructure." Pan Yonghua, vice president of Henderson China's new business strategy, said that if wind, solar, and storage lack the application of digital technology, it will be difficult to form a system to operate. She believes that in the digital and energy industries, more and more cross-border and integration effects will be produced in the future.
Wang Xiao, deputy director of the Planning and Research Center of the New Energy Engineering Institute of China Power Construction West Prospecting Institute, believes that energy storage is a prerequisite for new energy installed capacity and electricity to reach the mid- and long-term goals. There is a very large market and application prospects. "Energy storage technology should be combined with big data and 5G technology." He suggested.
Electrochemical energy storage
Realize cost reduction
The high cost is one of the obstacles to the development of the energy storage industry in the past ten years. The "Guiding Opinions" clearly pointed out that "intensify the research and development of key technology and equipment by means such as "opening the list" to promote the progress of energy storage technology and the reduction of costs." Cost reduction is listed as an important starting point for promoting the development of the industry.
As energy storage enters the commercialization stage, while technology continues to advance, costs are also continuously reduced.
Du Xiangwan believes that the current cost of electrochemical energy storage has broken through the economic inflection point. "The cost may be reduced by one third in the next 5 years, and 66% to 80% in the next 10 years." He predicted.
"In the future, the application of flexible resources represented by electrochemical energy storage, the cost of electricity is expected to be less than a dime." Su Qing, executive president of the energy storage division of Ningde Times New Energy Technology Co., Ltd.'s speech, caused heat in the field. Discussion.
Su Qing explained, first of all, because the current grid relies on pumped storage and regulating units, the regulation capacity on the load side is limited. In the future, the entire generation, transmission, distribution, and use of multiple scenarios can be flexibly adjusted with energy storage to achieve cost reduction. In addition, in terms of the transaction mechanism, due to the lack of current forecasting capabilities, the operating cost of the system is relatively high. "In the future, related transactions can be carried out in terms of capacity and energy, and building a market environment that allows energy storage to participate in transactions fairly will also help reduce energy storage costs."
He believes that a cost reduction path for electrochemical energy storage lies in the improvement of lithium battery performance. "Many companies in the industry choose low-cost energy storage equipment because of the requirement of strong energy storage. From the perspective of the true life cycle, fixed cost is a key indicator. For example, is the number of cycles 6000, 8000 or 12000? The battery is a The core factors, low loss, including high efficiency of components and low internal friction, are the key to reducing costs."
"The cost of a dime per kilowatt-hour has a huge advantage over traditional new energy. However, at present, when energy storage has not made qualitative breakthroughs in technology and raw materials, and the process has not undergone fundamental changes, it will take a long time to reach this price. A period of time." said Guo Xiangyang, deputy general manager of Shanghai Electric Guoxuan New Energy Technology Co., Ltd.
