Smart Substation Construction Achieves "China Leading"

Editor's Note: Since the beginning of this year, the State Grid Corporation of China has issued a series of documents to promote and standardize the construction of smart substations. Then, what is the overall situation of smart substation construction and what results have been achieved, and where will the next step be? On September 6, the person in charge of the Ministry of Infrastructure of the State Grid Corporation of China accepted an interview with the reporter and explained the situation concerning the construction of the smart substation.

Smart Substation Construction Achieves "China Leading"

Question: From the economic and social background, what are the significances of building a smart substation?

A: The smart grid construction is based on the characteristics of China's energy distribution and geographical distribution of load consumption, and it is adapting to the development mode of the power grid in China's current and future economic and social development. Its outstanding features are: strong adaptability to all kinds of energy sources, especially large-scale wind power and solar power generation; the flexibility of system safety and operation control is greatly improved, and it can effectively resist all kinds of serious failures and reduce accidents. Risk; With strong network and market functions, it can realize large-scale and high-efficiency configuration of energy resources; High level of interaction, which can better meet the needs of various users for smart electricity, and comprehensively improve service standards and quality. .

Smart substation is one of the core platforms for achieving energy conversion and control in the construction of strong smart grids. It is an important component of the smart grid and an important support for the integration of new energy sources such as wind energy and solar energy into the grid. Smart substation is the key to connect the smart grid power generation, transmission, power transformation, power distribution, electricity and scheduling, and can better meet the requirements of smart grid information, automation and interaction in technology and function.

Therefore, we can say that the construction of smart substations is of great significance to the adjustment of China's energy structure.

"China leads" is reflected in six aspects: What kind of work has the company carried out? What is the overall situation of China's current construction of smart substations?

Answer: The technology of smart substation construction is complex and the implementation of the project is difficult. There are both technical and management challenges. Whether domestic or foreign, there are no ready-made technologies, equipment and standards for the construction of smart substations. Based on the overall arrangement of the company, the company's Infrastructure Department focused on technical key issues such as key technology research, smart technology implementation, smart device application, system commissioning and verification, and timely issued management requirements and technical specifications guidance. At the same time, the key links such as smart technology demonstration, engineering design, design review, and equipment procurement are effectively promoted. Organize smart substation design competitions, build platforms, and guide the level of engineering design. At the same time, three large trainings were conducted to train technical personnel of engineering management personnel, regional, provincial, and regional design units to conduct special training on the technology and design of smart substations to improve personnel capabilities. Through a series of measures, the trial construction of the smart substation has achieved phase results, and the smart substation construction field has achieved a series of “China leads”.

First, breakthroughs have been made in core technological innovations. Through the scientific practice of pilot projects, the technology of smart substation construction has become more mature, and the digitalization of the entire station, the networking of communication platforms, the standardization of information sharing, and the interaction of advanced applications have been realized, and the operation and maintenance level and safety and reliability of substations have been improved.

Second, effectively guide the direction of equipment development. The comprehensive construction of smart substations has triggered the “selection of equipment according to the requirements of use.” Through the construction of smart substations, the equipment manufacturers are guided to invest in scientific and technological resources and carry out independent innovation. Each scientific research unit and related equipment manufacturing industry actively participates in the research and development and manufacture of key substations in smart substations, and produces intelligent high-voltage equipment, new control protection equipment, and optimized integrated secondary equipment that meets the technical requirements, enabling the smooth implementation of smart substation construction.

Third, management standards and technical standards form a series. In order to standardize the key technologies, design and engineering applications of pilot projects for smart substations, the company’s Ministry of Infrastructure has organized a series of smart substation engineering design, equipment specification and commissioning and test specifications. At the same time, the company’s Ministry of Infrastructure has also issued document requirements to guide Two types of "building" direction, put forward the technical optimization, equipment integration requirements, effectively standardize the company's system intelligent substation construction work.

Fourth, the project construction is proceeding in an orderly manner. The company's Infrastructure Department organizes scientific organization and advanced planning for each project construction unit, and seizes key links such as technical solutions, engineering design, design review, equipment procurement, and installation and commissioning to ensure that all intelligent technologies are implemented in an orderly manner, and pilot projects are implemented as planned. Successfully put into production. At the same time, it has accumulated experience in the construction and management of smart substations. This lays a foundation for the overall promotion and construction of smart substations and is conducive to the further improvement of the overall level of smart substations.

Fifth, smart technology has achieved practical results. Smart substations can significantly increase equipment operation reliability, automate equipment operations, improve resource use and production management efficiency, and make operations more economical, energy-efficient and environmentally friendly. At the same time, it can also improve the reliability of power supply and power quality, optimize and adjust the operation mode of the power grid in real time, effectively reduce the power loss of the power grid, make full use of the primary equipment resources, and increase the efficiency of equipment use. In addition, real-time monitoring of the power grid can also be realized, which can reduce the operation and maintenance management costs and greatly reduce the workload of the operation and maintenance personnel.

Sixth, the effect of saving environmental protection and saving funds is obvious. Compared with traditional substations, smart substations are compact in structure, concentrated in secondary equipment, more rational in layout, and smaller in floor space. The original cable wiring is replaced by lighter and cheaper optical fiber, which saves the use of non-ferrous metals and is more conducive to Environmental protection and energy saving.

Continue to standardize management and improve project quality Q: What are the new plans for smart substation construction in the future?

A: In the next step, we will mainly work in four major areas.

First, coordinate advancement and ensure that pilot project construction goals are achieved on time. According to the schedule of the nodes, the pilot project of smart substations will continue to be promoted. In addition to the individual projects that have been identified, ensure that the pilot project will be completed and put into production before the end of 2011.

The second is to promote the comprehensive construction of new substations in 2011. According to the company's unified deployment, starting from 2011, the new 110 (66) kV and above substations will all be built according to the smart substation technology model. We will continue to summarize the experience of pilot construction of smart substations and guide the follow-up of smart substations.

The third is to continue the research on key technologies of smart substations. Timely review the problems found in the summary of the pilot construction and continue to carry out special research on smart substations, including the application of electronic transformers, the scope of equipment condition monitoring and the rational allocation of parameters, the realization of relay protection, and the integration of integrated power supply in substations. Wait. By strengthening the research on key technologies of smart substations, under the premise of ensuring the safe and reliable operation of substations, the overall investment in the project can be effectively controlled.

Fourth, improve the design and construction of a smart substation standard system. Summarize the experience of design and construction of smart substations, formulate technical specifications for network design of intelligent substation automation systems, technical specifications of network switches, and technical specifications of measurement and control devices under the framework of the company's unified procedure specification system, and further form the whole process of design, equipment, construction, and debugging of smart substations. Technical standard system.