April 1, by the China Machine electrician nine domestic power expert of the organization came to South Network Society research centers, to the hospital, "AC-DC bulk power high immersive panoramic real-time simulation technology cross-platform (hereinafter referred to as real-time simulation technology grid) "Integrated research and development and application of scientific and technological achievements appraisal. At the meeting, the chairman of the expert committee of experts and Academician Wang Xifan of the Chinese Academy of Sciences applauded this emulation system with unique characteristics of the South Network: "This distinctive platform with independent innovation is so obvious that it is also rare in the world. " So what is the distinctive characteristic that Prof. Wang praised? Seeking South Network characteristics of the solution This reporter in the South Network Research Institute of Power Grid Simulation Laboratory saw a row of Yun Guang / Nuozhadu, STATCOM and other projects to control and protect the equipment before the simulation results are displayed on the screen, next to the RTDS (Real-time digital simulator) equipment strobe light, is running at full speed. Science and Technology Institute of Simulation and Control Technology Laboratory Test Platform Technology Research Institute, said Zhang Construction, with years of development, China Southern Power Grid "AC-DC, long-distance, high-capacity" of the special power grid structure determines the complexity of its operation, combined with recent years Technology such as flexible DC power transmission, STATCOM and energy storage has been added to the power grid, bringing new challenges to power grid operation and putting a lot of pressure on the operating departments. How do we manage the most complex large power grid in the world? "We need A better simulation platform. " In 2004, Li Li mg academician and other members of the group through domestic and foreign research, research and development of simulation platform proposed, so the company invested heavily in the establishment of the grid simulation laboratory. However, there are many kinds of grid simulation technologies. The grids of Russia, South Korea and Canada all adopt different ways according to their own situations. The expert group has argued that the research and development of Nanwang's simulation technology started a little later and may not have the traditional simulation Advantages, it is recommended to develop digital simulation. This is why you can not see any grids or equipment models in the grid simulation lab at NanGuan Institute of Science and Technology, only computing equipment and displays, as the reason for the information center. In less than 10 years, Nantong Scientific Research Institute has obtained 14 patents in the research and development of real-time simulation technology for power grids and has developed it into the largest and most technologically advanced complex power grid simulation experiment platform at home and abroad. National Energy Administration also in 2009 the only one "national energy grid technology R & D center" settled in the South Institute of Science and Technology, and in its five objectives, including the simulation test technology research and development. Identification Expert Group, vice chairman of the China Electric Power Research Institute Chief Insulation, General Engineer said with deep feeling: "South network simulation platform started in 2004, to the present such a large scale, I personally experienced its development process. It really is not easy to really play an important role in the simulation and analysis of the characteristics of complex AC and DC large power grids and the operation of technical services. " What simulation technology can solve? So, real-time simulation of power grid technology to solve what problems in the development of the grid? Han Weiqiang, director of the Institute of Simulation and Control Technology, said: "The real-time simulation technology of power grid plays an important role in HVDC engineering, control of AC-DC power grid stability and application of new power electronics technology." Grid real-time simulation technology is to build a digital virtual grid environment in the laboratory, and then run the scheduling that needs to be tested on the virtual grid environment of "invisible, invisible" and only in the processor and display screen Instruction, or access to the need to test the relevant equipment to test their impact on the operation of the power grid, after the digital simulation training ground inspection before switching to the actual grid operation, the security risk will be to a minimum. Zhang said that there will be a variety of problems in the operation of AC and DC large power grids: voltage stability, mutual influence of AC and DC, safety and stability, voltage and reactive power and other issues, can be tested on the simulation technology platform. However, all the premise is that the simulation platform must be accurate copy of the grid environment in order to ensure the accuracy of the test. Therefore, "the simulation technology has about 60% of the difficulty, are focused on the establishment of the model, and most of our science and technology Nanchong core competitiveness and as our intangible assets, it is precisely our analysis of the construction of digital power grid model We applied for a patent. " For example, the island operation test, the conventional means can not be rehearsed, only through the simulation test, in the laboratory to build a virtual island environment, and control protection, excitation speed control equipment is 1: 1 original placed in the laboratory, into the virtual grid, completed the final test. Simulation test has become a necessary part In accordance with the relevant provisions of the South Network in the construction of the project, such as Yun Guang / Nuozhadu ± 800 kV DC transmission and STATCOM and other large projects, after the design aspects and construction aspects, must be real-time simulation technology platform for control and protection And other equipment to carry out "digital simulation training" to observe whether the response of the equipment is perfect or not in the case of sudden or complicated operation of the power grid. If the problem is found, it can be modified in time, saving the construction period as well as Save on-site commissioning but also the high cost of rework. "Although related equipment manufacturers and research institutes have similar simulation labs, they can not complete networking tests and only test one device in isolation due to their lack of understanding and technical support for complex large power grids." Zhang Jianshe Say. Engineering, the role of the simulation platform is also reflected in the scheduling, such as last August and September last year, China Southern Power Grid appeared more than the same time multiple DC commutation failure, the simulation lab based on the operating mode data obtained, into each DC simulation platform, and then began to import the fault, such as August 11, lightning caused C phase failure, the experimenter is also simulated in the simulation platform C phase failure, and then try to make the simulation platform in the grid waveform and the actual fault occurs When the converter station and substation recorded power grid waveform is basically the same time, the dispatch department can be in this "man-made fault platform" for a stable strategy and cutting machine, cutting load and other scheduling instructions for the preview for the future to deal with the situation Provide important reference. Lab-home team Whenever a model is built, it takes four or five core researchers plus hundreds of peripheral assistants to work overtime for months, and the lab's data-processing facilities are often at full capacity but still on tight schedules, including weekly weekends People who need to do the test, Zhang said: every time you enter the data are 1 meter high, in