Grid development is currently facing significant changes: First, the proportion of intermittent renewable energy increased year by year, the system continued to weaken the balance of power, due to lack of regulation capacity in some areas led to Abandoned Abandoned phenomenon is serious; Second, with the development of socio-economic peak Thirdly, the demand response, the proportion of flexible load such as electric vehicles and storage energy increase, and the adjustability is increased, which may become a new means to improve the supply and demand balance of power grid. In order to meet the new demands, it is urgent to develop the traditional scheduling mode of "generation tracking load" into a "source-grid-load" interactive scheduling model. However, in an interactive environment, there are many loads, scattered distributions and more bilateral uncertainties To enhance, how to grasp and control the interaction between power grid, power grid and load in grid dispatching and control level to make it more conducive to the safety and economy of power grid is an urgent problem to be solved.
To solve the above problems, China Electric Power Research Institute has established the research direction of "source-grid-load" flexible interactive operation scheduling and control since 2011. Yang Shengchun, Wang Ke, Li Yaping, Feng Shuhai, Zhao Liang and Li Feng are the main Through the efforts of several years, the researchers' source-net-load interactive operation optimization scheduling and control team gradually mastered the key technologies of source-network-load interaction regulation and control and formed the source-network-load interaction operation Analysis and control of the overall solution, research and development of a series of related software and put into practical application.Recently, 'source - network - Dutch' interactive regulation and control system, key technologies and applications by the China Power Technology Invention Award.
The project focuses on the regulation and control of flexible load participation and conducts a systematic study from two aspects of science and technology. From the interactive characteristics analysis, interactive modeling, quantitative evaluation of interactive potential, interactive safety operation analysis, energy balance, coordinated control, performance evaluation and so on In the project implementation period, 19 invention patents were granted and 41 papers were published (18 SCI papers, 18 EI journal papers and 18 IFAC papers 2 papers, 3 papers of PES GM), 5 applications for software copyrights and 1 monographs, 19 invention patents and 41 papers (18 SCI papers, 18 EI journal papers, 2 IFAC papers 2 papers) , PES GM thesis 3), apply for software copyright 5, published a monograph.
At present, the concept of "source-net-load" interactive operation control has been incorporated into the national "13th Five-year Plan" framework and effectively promoted the construction of energy Internet. The invention achievements have been obtained in Ningxia, Jiangsu, Zhejiang, Nanjing and Nantong provinces and cities Application On February 16, 2017, China Society of Electro-Mechanical Engineering organized the appraisal meeting of scientific and technological achievements of this project in Beijing. The Appraisal Committee unanimously considered that the research achievements and key technologies of the project are all international pioneers. In the project of "Source-Network-Dutch" Interactive operation analysis, planning and control to achieve technological breakthroughs and innovation:
The invention discloses the method that the flexible load participates in the grid regulation and control operation, reveals the connotation of the source-grid-load interaction operation control and puts forward the regulation and control system framework that supports the interaction of "source-grid-load" Operational analysis and control provide a total solution that dramatically improves the flexibility of the grid.
A rapid quantitative evaluation method for bus flexible load aggregation response potential is disclosed. Combining the top-down bus load separation with the bottom-up single-class load response potential analysis, the invention provides a fast control operation to obtain the bus-level load response potential Prediction and quantitative assessment methods.
The invention discloses a continuous probability power flow and a continuous probability static safety analysis method taking into account the correlation of the response, which can reflect the bilateral uncertainty of the source load, the mutual influence and the continuity of the interaction process, and solve the static safety of the power grid during the interaction process problem.
The flexible load stochastic optimization scheduling model considering the grid security constraints was invented. The decision-making quantity can cover multiple scenarios of wind power output randomness and load response uncertainty, and solved the programming problem of scheduling in the bilateral uncertain source-load scenario.
Invented a 5-minute roll optimization traction control strategy that takes into account the flexible load response, which solves the problem of massive flexible loads participating in real-time control of distribution network.
The invention of the project has been applied as a whole in Ningxia Power Grid. The flexible load response capacity of large industrial users, EV charging stations and residential quarters can significantly reduce the wind power in Ningxia and delay the expansion of transmission and distribution equipment of Ningxia Power Grid to a certain extent In addition, the research results are also applied in Jiangsu, Zhejiang, Nanjing, Nantong and other power grids to provide more comprehensive and rich information for system operation decision-making.Practical application of project achievements has improved that grid dispatchers should deal with both sides of source-load The scheduling decision-making and control ability in uncertain environment is conducive to improving the capacity of absorbing new energy, increasing the load factor of thermal power units, reducing the peak-valley difference, increasing the participation of users, and benefiting the power supply, power grid and users. The economic and social benefits are significant , Has a broad prospect of popularization and application.At present, the concept of "source-network-Dutch" interactive operation control has been incorporated into the national "Thirteenth Five-Year Plan" outline, effectively promoting the construction of energy Internet.The invention achievements in Ningxia, Jiangsu, Zhejiang, Nanjing, Nantong and other provinces and cities have been practical applications. February 17, 2017, China Institute of Electrical Engineering in Beijing Organization convened a scientific and technological achievements of the project appraisal, appraisal committee agreed that the project research results, the key technologies are international initiative.
China Electric Power Research Institute 'source - network - Netherlands' interactive operation optimization scheduling and control of the total number of teams of 24 people, including four doctoral qualifications, 14 senior titles, the number of young people under the age of 35 17. The team continued from 2011 onwards 'Source - network - Dutch' interactive operation control technology research project, established a source-network-Dutch flexible interactive operation control theory and technology research system in the field of interactive operation control in the international advanced level in the past three years, the team A total of national key basic research and development plan (973 plan) a project, the national high-tech research and development plan (863 plan) a project, the national science and technology support program project 1, the state's key research and development projects 2, the National Natural Science Foundation of China One on each of the projects on the surface and the youth science fund, one on the surface of the Beijing Natural Science Foundation, one on the Natural Science Foundation of Jiangsu Province and more than 10 on the State Grid Corporation's science and technology projects. More than 100 articles, accepted more than 50 patents for invention patents and 5 software copyrights.
