As the basic industry of national economic development, providing safe, economical, clean and sustainable power to the economy is still the primary task of China's power industry. With the high degree of integration of information technologies such as big data, cloud computing, Internet of Things, artificial intelligence and power automation control technology, the power industry is becoming more intelligent and professional, which makes energy utilization safer and more convenient, and effectively promotes the continuous optimization and upgrading of the national energy structure.

We can see in the 2018EP that many enterprises deeply involved in the power industry have made great efforts to continuously achieve technological breakthroughs and engineering applications in the fields of "power generation, transmission, transformation, distribution and electricity utilization", leading the industry to develop by leaps and bounds. Now let’s follow the perspective of shupeidian.bjx.com.cn, to focus on CYG Sunri, a member the first echelon of China's power industry. We will explore the road of comprehensive expansion under its innovation logic.

Early and Pilot Implementation: Open Up New Ideas and New Journeys for Smart Grid Development

The construction of smart grid has entered a comprehensive upgrading stage. According to data, in terms of power grid infrastructure construction, about 8,000 intelligent substations are planned to be built from 2016 to 2020, and the proportion of new intelligent substations will reach100%; In this exhibition, CYG Sunri brought a local whole-station solution, which provided a solid foundation for enhancing the intrinsic safety of the power grid and improving the operation and maintenance mode.

From a pioneer to a leader, CYG Sunri, as the "bellwether" in the field of local protection, has achieved the three “most” in the industry, namely, the earliest one in equipment research and development, the largest number of on-line substations, the longest running time (5 years). Aiming at the problems of low reliability and speed of intelligent substation system, insufficient personnel carrying capacity, large floor area and high energy consumption, CYG Sunri pioneered the local protection scheme based on low power consumption, miniaturization and high reliability design.

In 2013, the delivery-type substation began to be piloted, and the new construction model brought major challenges to the reconstruction and expansion projects. CYG Sunri first proposed the concept of "localization" and began the trial on-line operation of equipment in the same year; the year of 2016 was the promotion stage of local protection devices, and preparation of nine local line protection technical standards were completed. The first echelon in the field of relay protection started the research work and passed professional testing; In December, seven representative areas featuring severe cold, high temperature, high altitude and salt fog (Mohe of Heilongjiang, Turpan of Xinjiang, etc.) were selected to carry out the trial on-line operation; According to experts, the State Grid plans to complete the trial operation of 29x 110kV stations, 29x 220kV stations and 8x 500kV stations in 2018. The reporter learned that local protection devices are mainly used in the 3G smart substation launched by State Grid, and the application of the new unified and standardized devices and local protection have broad market capacity and prospects.

Highly Integrated: Diversified and Integrated Distribution Network Technology

In the field of power distribution network, the coverage rate of distribution automation reached 90% in 2020. "With the continuous advancement of distribution automation and smart grid construction, how to better promote and realize the integration of distribution primary and secondary equipment has become the focus of the power industry," said Hou Yiming, a professor-level expert at China Electric Power Research Institute.

(Upper left: primary and secondary integration of pole-mounted load switches, upper right: primary and secondary integration of pole-mounted circuit breakers, lower left: centralized primary and secondary integration, lower right: primary and secondary integration of distributed loop network cabinet)

In the first half of 2018, the business volume of power distribution network increased significantly compared with the same period of last year. It is an important part of the development and construction of comprehensive energy to build a full-coverage distribution primary and secondary integration solution and an intelligent management and control platform for the operation and maintenance of power distribution network, to improve equipment state control and operation and maintenance management penetration, and to realize friendly interaction among source, network and load.

Layout in Energy Storage: Great Development under Two-wheel Driving

From the perspective of energy storage market development, in 2017, the installed capacity of the existing electrochemical energy storage projects in China is nearly 390MW, and it is estimated that the installed capacity of electrochemical energy storage in China will reach 1800MW by 2020. In 2017, there are three main application scenarios of electrochemical energy storage projects in China: the installed capacity of user-side energy storage system accounts for 59%, which is the largest proportion; the grid-side energy storage system of centralized new energy accounts for 25% and the auxiliary services of power grid accounts for 16%. In terms of energy storage projects in 2018, the proportion of energy storage on the grid side will greatly increase.

Since 2018, CYG Sunri has made great achievements in the field of energy storage. In the high-end power grid market, the PRS-3000 energy storage monitoring and energy management system of Jiangsu Changwang Energy Storage Power Station is the first to be connected to the grid, which helped the Company gain market opportunities in the field of energy storage control; We also have a lot of cooperation project in user-side industrial and commercial energy storage system in Beijing, Jiangsu, Guangdong and Hubei and other places; The Company has won the bid for the RMB 3.575 million secondary equipment (EMS, station-side computer monitoring system, etc.) of Furong Energy Storage Power Station Project in Changsha, Hunan Province, and our products cover the all application scenarios of user-side energy storage, grid-side energy storage and power plant-side energy storage.

Ding Kai, technical director in energy storage of CYG Sunri, said, "the Company began to prepare for the development of energy storage-related products in 2014. In various specific energy storage projects, we have improved the development and mass production of primary and secondary equipment in the energy storage system, including battery management system (BMS), power conversion system (PCS), energy storage coordination controller, energy storage energy management system, etc. At present, we are able to provide all devices and equipment in the energy storage system and undertake the general contracting tasks to realize turnkey projects. It can be said that CYG Sunri is not only a professional provider of relay protection for power system, but also a professional provider of energy storage system. "

Technical Director Ding Kai is Interviewed by BJX.COM

At present, the principle contradictions restricting the development of energy storage industry have changed fundamentally, and cost and technology are no longer the biggest constraints., "With the continuous improvement of China’s power system reform, the opening up of the power market and the continuous reduction of costs, the large-scale development of the energy storage industry can be expected in the future," Ding Kai said.

Bright Prospect: User-side Comprehensive Energy Services Are Gradually Commercialized

At present, due to the diversified combination modes of power, PV, gas, cold and hot energy supply and applications, higher challenges and requirements are put forward for the control and integration control of multi-energy technologies, so the integrated energy service market is still in its infancy. However, integrated energy services have wide connotations, multiple levels and various patterns, with great potential demand and contribution to energy conservation and emission reduction. Relevant estimates show that by the end of the 13th Five-Year Plan, the output value of China's integrated energy service industry is expected to exceed RMB 8 trillion.

Under the new format of integrated energy services, CYG Sunri actively adapts to the new requirements of energy supply side reform and power system reform, Combining Internet, big data, cloud computing and other technologies, integrating clean energy and renewable energy regional microgrid technology, deepening the layout of engineering services, investment services and operation services, and vigorously developing and practicing various projects such as distributed photovoltaic, user-side energy storage, carbon trading, microgrid, optical storage and charging, and multi-energy complementarity. For example, distributed photovoltaic cases have fully covered villa households, rural households, poverty alleviation photovoltaics, industrial and commercial concrete, industrial and commercial color steel plates, steel structure carports, skyscrapers and other scenes; Combined with peak shaving and valley filling and capacity change, energy storage and microgrid projects are being rolled out all over the country, gradually realizing commercialization.

Make good use of energy and be kind to the future", CYG Sunri plans to continuously deepen the scientific and technological innovation and application research and development of power technology, take "good at technology" as the core development direction, strive to achieve leap-forward development under the new blue ocean of comprehensive energy services, and help improve the utilization efficiency of comprehensive energy in enterprises and society and reduce comprehensive energy consumption.

Renovate Operation and Maintenance to Solve the Problem of Long Life Cycle Operation and Maintenance of Power Station

There is a big difference between intelligent substation and traditional substation, and the secondary circuit in the substation is changed into the optical fiber "virtual circuit" of intelligent substation, which brings great challenges to the operation and maintenance. According to Qiao Ke, product manager of CYG Sunri, the intelligent operation and maintenance system, a panoramic real-time monitoring and maintenance scheme for secondary system operation conditions of substations in the whole network proposed by CYG Sunri, consists of PRS-7002 visual operation & maintenance slave station and PRS-7012 visual operation and maintenance master station, which realizes comprehensive data collection, visual display of operating conditions and intelligent fault diagnosis, and promotes the application of "remote intelligent operation and maintenance" technology. The system greatly improves the efficiency of fault handling, reduce the work load of operation inspection personnel, and then realizes the intelligentization of operation inspection and professional management.

Moreover, with the increasing complexity of power grid structure, the mixed technical levels of construction and commissioning personnel and the stricter operation and maintenance management level in the industry have put forward higher requirements for construction operation and maintenance business, and the "annoying" operation, the "expensive "cost, the "dizzy" fault and the "confusing" energy efficiency have become common problems that plague many owners. Under such market opportunities, Chengdu Qicheng Electric Power Co., Ltd. ("Qicheng Electric Power"),a wholly-owned subsidiary of CYG Sunri specializing in power engineering services, relying on the advantages of talents, products, markets and platforms of the parent company, is committed to the development of power construction and power operation & maintenance business sectors, focuses on integrating internal and external resources to provide equipment life cycle solutions for industry customers, Among them, the operation and maintenance business section covers many fields such as operation & maintenance of substation primary and secondary equipment, automated operation & maintenance of distribution networks, new energy power station, operation & maintenance of industrial power stations, operation and maintenance of charging piles, etc. With a series of self-developed operation and maintenance tools and intelligent operation and maintenance cloud platforms, as well as a team of more than 400 operation & maintenance engineers all over China and overseas, we will continue to escort the stable operation of customers' projects!

Integrate Resources to Provide All-round Engineering Services for Integrated Projects

As the national energy structure has been continuously optimized, the industrial chain layout of CYG Sunri’s energy business has also been deepened. All the subsidiaries have specialized division of labor, refined management and complete qualifications. The project service industry chain covers project development, investment, consultation, survey, design, planning, general contracting, project management, construction, installation & debugging, technical innovation, operation & maintenance, etc., fully realizing closed loop management, covering all links such as "generation, transmission, transformation, distribution and utilization" and various energy complexes.

In CYG Sunri's view, with the continuous reform of project construction mode and management system, "EPC", an internationally recognized and effective project implementation mode will become an inevitable trend. To highlight the leading position of design in general contracting plays a very important role in improving the technical level of engineering construction, ensuring engineering quality and controlling engineering investment.

With the design concept of building block substations, Sichuan CYG Consulting and Engineering Co., Ltd. (one of the wholly-owned subsidiaries of CYG Sunri) can effectively shorten the construction period by relying on its professional talents, technical advantages and the BIM-based 3D design technology. Moreover, CYG Design actively promotes quota design, evaluates feasibility, cost and value function in a scientific way, provides customers with better and more economical technical solutions, and ensures the optimal realization of the owner's investment income target. With the high-quality practice in multiple EPC projects, CYG Design has built a professional project management team to ensure the orderly connection of design, procurement and construction, and guarantee the quality and quantity of the construction period.

The future has passed, andwe must remain stable growth to realize far-reaching goals!