Deputy Director of Beijing Zhizhong Energy Internet Research Institute Technical Committee Lu Chao
On April 2-4, 'Storage and Energy Summit & Exhibition 2018 (ESIE 2018)' was held at the Beijing National Convention Center. Lu Chao, Deputy Director of the Beijing Zhizhong Energy Internet Research Institute Technical Committee gave a speech at the theme forum. The following is Speech details:
Lu Chao, Deputy Director of Technical Committee of Beijing Zhizhong Energy Internet Research Institute
Good afternoon, everyone, I'm very happy to have this opportunity to report on our work in this area. I myself work in Tsinghua, so my report may be more about some technical aspects. Others about application models, some businesses This aspect of policy may be introduced by other experts.
The first part encourages the construction and development of distributed energy storage. There are related domestic and international facilities. This is a very important fulcrum for energy storage development. Of course, in recent years, energy storage as a whole has increased in all aspects, and everyone in this document is familiar with it. This involves distributed energy storage, which includes distributed energy storage facilities, networked operations management, the construction of its equipment, open and distributed distributed platforms, and its demonstration projects, etc. The work is in progress.
Of course, there are also many foreign policies related to the United States. This aspect is still relatively numerous in the United States. California has a series of policies to support it. From 2011 to 2017, a series of incentives are available. There are also other contents in other places. All, this is for your reference.
On this basis, there are also many more professional organizations. I wrote down the source of the report below. They made some predictions. This is distributed energy storage. It will increase 30 times from 2017 to 2026, about 10 years, from 600 MW. To a capacity of 19 thousand megawatts, there is of course a great deal of development. Purple is China, and there are also some rapid changes. There are also energy storage predictions that range from more than one thousand megawatts to more than 30,000 megawatts. About 30 times, it is similar to distributed energy storage. Distributed energy storage is also a state of rapid development relative to centralized energy storage.
There are also distributed energy storage products and devices at home and abroad. This is not all in there. We understand that there are only a few of them in the scope of doing so. Of course, there are more and more projects on distributed energy storage demonstrations on this basis. There are two of them. First, DTE Energy was completed in 2014, installed 25-50 kW of energy storage, established distributed energy storage, and established a capacity control center. There are also 8 community energy storages and 9 community energy storages on the right. Coupled with distributed photovoltaic, the entire small system local grid size and number of users.
The second Texas energy storage project with photovoltaics, which was completed this year, is expected to be a demonstration lucky star next year. There is a centralized energy storage, a commercial distributed energy storage, and a center for distributed energy management, which is its The main structure of the energy management and control system includes the application from the system level, including the distribution level control, up to the device level control part. The left side blue is centralized, the right side is the distributed function, this is the main control function. The main sources of information are listed below. Interested parties can look specifically at the sources.
The front is about the situation. The rapid development of distributed energy storage requires a very important stage to start. Policies and demonstration projects in various areas are in the process of rapid progress. In this respect, our task force has done a lot of work under the leadership of academicians. Work, related fields have done some basics. This is a matrix of large energy storage that we do, here list various functions of energy storage, two or two combinations, if the combination of these two features is very few, which are good, Which is not possible. Because energy storage involves control functions, it has a lot of features, time scales are completely different, very fast, there are FM controls, pressure regulators. There are a long time, a few hours of peak clipping The mode of filling grain. There are functional applications, but also applicable. This involves the energy storage itself, but also the demand of the power grid. It is a comprehensive consideration of the two parts.
My own research team has achieved certain results in the control and analysis of power electronics and power grids over the past 20 years. In the past ten years, the grid analysis and control has won three national progress awards, as well as national invention awards, involving a large number of power electronic devices. Access to the power system creates new system control problems and how to solve them.
In the case of power electronic energy storage related to converters, power electronics applications are very much such a scenario. Our task force should be doing 20 trillion from 20 years ago, up to 50 trillion, up to 200 trillion, and should include both domestic and foreign The landmark achievement also won the National Science and Technology Progress Award. Based on us, we have developed the power electronics business department.
Our energy storage is related to the above, this is Nanchang Baoqing Battery’s energy storage is very familiar with, and participates in different tasks in the previous and subsequent periods, including the first phase of the PCS, including the 863 behind project, responsible for the BMS, the entire system level Surveillance system. This is the focus of monitoring. This is what we did at the time. It may be five or six years ago, and it will have a comprehensive design of its application functions. There are also on-site In the application, the left ones are equivalent to the demonstration project, and the right ones are tested. Since no wind power has not been tested on the actual site, of course, it is implemented in the system. This is a monitoring system with the Beijing Quartet. Its module access to peak load filling platform.
We have done a complete system from the beginning of the database to the back of the interface, and have also done work in the BMS. It is a balanced part. There are 10,000 batteries in the area, all the way to the control of the stack, and there is an equalizer. It's all good.
Specifically based on the above work, we focused on distributed energy storage, and we focused on monitoring and control technology, not on the battery itself, or on this part of battery management. This part is relative to distribution. Energy storage has flexible advantages, close to distribution network, closer to users, etc. There are many advantages. However, it also brings difficulties. First of all, that is, for example, centralized energy storage, we can configure it as a local optimization. However, there is a lot of distributed distribution, where is the location of each point, and how much capacity. It has more role variables in it, in addition to considering the impact with the grid, but also consider the impact of different energy storage, this is a Very troublesome thing.
Here is a simple example of peak-cutting and valley-filling. Let's report some ideas on capacity optimization and real-time control. In this case, distributed energy storage considers such a local network. It has a trend distribution problem, which is focused on There are no issues to be considered in the control. This involves special constraints, including optimization methods, as well as some standard test systems. Combined with the distribution network, the force is calculated. The configuration results are more biased toward the end of the line. To maintain the same cost, the effect of peak-shaving and valley-filling increases about 7%, which has a certain relationship with its load distribution.
The second point, distributed control, real-time control and distributed control also have gaps, taking into account the consideration of communication delay, there are distributed effects. There is a centralized and distributed combination of the structure, a host to countless The sub-stations are obviously unrealistic. If a large number of communication burdens can't stand it, it involves centralized methods. The upper layers do centralized arrangements. The upper layer maintains good communication conditions and does a decentralized optimization. We did some research. Sex work, including the process of self-coordination below, gets a quick and good convergence process.
Finally, we will create a small advertisement for you. Amway is our small product. The Beijing Zhizhong Research Institute is a high-energy storage asset that Tsinghua has settled in. It uses the interaction between the distributed energy storage devices we just talked about to do its control. Some of the specific interfaces were not explained in detail. Thank you very much.