After the explosive growth in the past few years, China's power grid construction has entered a relatively stable stage, especially for the investment in major grids. Can power grid equipment suppliers relying on traditional power grid infrastructure and major grid business maintain their market share and cope with a new round of reshuffle in the market? CYG SUNRI Co., Ltd., the leader of power grid protection and automation control with the mission of "making the power grid stronger and smarter", is full of confidence.

In 1994, the Research Office of Component Protection and Substation Integrated Automation of the Electric Power Automation Institute under the Ministry of Electric Power Industry was restructured into a company, that is CYG SUNRI Co., Ltd. (hereinafter referred to as "CYG SUNRI”). The company specializes in R&D, design, production and sales of power system relay protection products and substation integrated automation products, and provides related technical services. It is a well-known Chinese enterprise engaged in the power automation industry, one of China’s major manufacturers of the products used for relay protection and substation integrated automation control, and a key partner of State Grid, China Southern Power Grid and major energy companies. In the context of energy transformation in China, has CYG SUNRI made breakthroughs in other fields while keep delving deeper into its main business? At the 11th EP Shanghai, we found the answer.

A Journey of a Thousand Miles Begins with a Single Step. CYG SUNRI Makes a Breakthrough in Details of the Smart Substation

China's power grid construction is characterized by emphasis on major grids and infrastructure, and neglect of distribution networks and operation & maintenance. In view of this, most equipment manufacturers only consider whether their products can meet the needs of power system construction, but pay little attention to whether the later operation and inspection are convenient. “CYG SUNRI is different. On the one hand, we take product operation and maintenance into consideration at the beginning of product R&D; On the other hand, we have invested a lot of energy in operation and inspection, and have developed products and systems specifically for operation and inspection services. From product development to operation and maintenance, we guarantee the safety of power grids in an all-round way,” said Xu Chengbin, General Manager of CYG SUNRI.

Based on this concept, CYG SUNRI launched the “PRS-7002 Intelligent Substation Visual Operation and Maintenance System” at this exhibition. ”

Scene of the launch of CYG SUNRI’s Intelligent Operation and Maintenance System

Compared with conventional substations, intelligent substations integrate more advanced technical means. They apply intelligent devices to optimize the control of power grid equipment, and control substation systems with digital information technology. To a certain extent, they improve the safety of substations. The wide popularization and application of intelligent substations brings convenience, but also leads to many problems. Intelligent substations are greatly different to traditional substations. The secondary circuit of an intelligent substations is an optical fiber "virtual circuit", so the related information generated by equipment faults is much more than that of conventional substations. The secondary circuit is not intuitive, causing immense difficulties in fault location, early warning, equipment management and control, operation and maintenance, and inspections. Great challenges of operation and maintenance do exist.

In view of this, CYG SUNRI visited and researched a large number of intelligent stations, summarized and analyzed the field work. Based on its rich scientific research experience accumulated over the years and its technical advantages in the field of relay protection and substation integrated automation, CYG SUNRI creatively developed the online monitoring and diagnosis technology for intelligent substation protection equipment. With a friendly application interface that is compatible with traditional professional display, the technology is used to manage secondary equipment of intelligent substations through SCD files. The information of merged units, intelligent terminals, protection devices, safety automatic devices and switches is obtained from the networks at the station control layer and the process layer, so as to realize the operation monitoring, intelligent diagnosis and power grid fault analysis of secondary equipment of intelligent substations.

According to Qiao Ke, Product Manager of CYG SUNRI, the online monitoring and diagnosis technology for intelligent substation protection equipment consists of two parts, namely the PRS-7002 visual operation and maintenance substation and the PRS-7012 visual operation and maintenance master station. The master stations are deployed at operation and maintenance centers at all levels for comprehensive management and statistical analysis of substations at all levels in the region, and remote operation and maintenance function can be realized with the dispatching data network; Slave stations are deployed at the substation ends to realize data acquisition, in-situ display of substation operation status information, and intelligent diagnosis of faults. The PRS-7002 intelligent substation visual operation and maintenance system can automatically complete information acquisition, measurement, control and protection, and can support automatic inspection and intelligent management and control of power grids as needed.

According to the public bidding results of secondary operation and maintenance management tools released by China Southern Power Grid Company Limited, CYG SUNRI Co., Ltd. won the bid for the “Substation Secondary Operation and Maintenance Management Toolkit 1”. This is the first public bidding of China Southern Power Grid for secondary operation and maintenance management tools. CYG SUNRI won the bid by virtue of its “Online Monitoring and Diagnosis Technology for Intelligent Substation Protection Equipment" after winning the bid for a similar product of State Grid (Zhejiang Intelligent Substation Visual Remote Expert Diagnosis System, intelligent substation status monitoring, and the value of bid is nearly 10 million yuan), including one 500kV substation and four 220kV substations.

Xu Chengbin noted that, “Some enterprises can constantly push forward the development of power grid construction, propose corresponding standards according to the requirements of power grid construction, and create new value for power grid construction. That’s what distinguishes them from other enterprises. More importantly, enterprises should attach importance to construction value. ”

Never Cease to Make Innovation, and Prepare to Seize Opportunities for Leapfrog Development of Energy Storage Business

2017 is called "the first year of energy storage" by many people. In this year, China released the first policy for energy storage industry, that is the Guiding Opinions on Promoting the Development of Energy Storage Industry and Technology. Moreover, various conferences and meetings of the energy storage industry were held one after another. From macro planning to exploration of various technology applications, the energy storage industry, as an emerging industry, attracted unprecedented attention in the year.

As an important part of the energy Internet, Energy storage can assist in power generation, transmission, transformation, distribution and use in power market. Energy storage systems can smooth the output of renewable energy and improve the ability of renewable energy power stations to track previous dispatching plans; assist in the frequency modulation control of thermal power units, quickly respond to power grid dispatching, and improve the utilization rate of power generation equipment; provide dynamic reactive power support and emergency power supply, and reduce grid loss; improve the quality of power use and enhance the reliability of power supply; and allow construction of microgrids for supplying power to areas without grids. According to the application characteristics of different links, CYG SUNRI has made full use of its existing power products and its engineering experience in power grid relay protection, substation monitoring and integrated automation, distribution network automation, power monitoring, power and electronic equipment, and developed a series of all-round energy storage solutions.

Scene of the launch of CYG SUNRI’s Integration Solutions for Energy Storage Systems

Chen Jiajie, Deputy General Manager of CYG SUNRI’s Electric Vehicle Charging Division, noted that energy storage has different application scenarios, and each scenario has different requirements and emphases on energy storage systems. No matter which scenario an energy storage system is applied to, there are three core aspects: The first is the application and management of energy storage batteries; The second is the good coordination and stable control of equipment and units in the energy storage system; The third is how can the energy storage system contribute to the dispatching and management of the whole power system in each application link. CYG SUNRI has advantages in these three core aspects: Firstly, there are many enterprises of battery and related materials under the electric vehicle segment of Changyuan Group, so CYG SUNRI is superior to ordinary energy storage equipment manufacturers or system integrators in the understanding and application of energy storage batteries; Secondly, CYG SUNRI has been deeply involved in the power grid field for many years, and has great system integration capabilities for energy storage power stations, microgrids and other systems; Thirdly, CYG SUNRI has a better understanding of the dispatching and management requirements on various energy storage systems that must be met for future power grids, so it can reserve and design functions of energy storage systems in advance.

There are many enterprises involved in the energy storage business, but CYG SUNRI believes that it will make great achievements in the field of energy storage by virtue of its own advantages. Its advantages include:

1. Equipment integration: It can independently develop core equipment (including BMS, PCSs, bypass cabinets, microgrid controllers, energy management systems, etc.), has strong system integration capability, good integration among equipment, and superior product quality and services. Chen Jiajie noted that, “There are diversified requirements for energy storage applications, and energy storage systems have not been standardized. It’s necessary to have better response to different requirements and applications. If the core products are outsourced, there may be problems in response to customer demand and in maintenance. ”

2. Platform: It develops energy storage products based on its technology R&D platform for the main business (power grids) that it has been engaged in for more than 20 years. With a system of strict quality control, it can supply products of superior quality and high reliability.

3. Professionalism: It has leading professional technologies of power grid protection and control, and automation; It is familiar with professional technologies related to security, stability and control of power grids

4. Design qualification and ability: With Grade B qualification for engineering design, Grade B qualification for engineering survey and Grade C qualification for engineering consultation, the company can provide professional and complete solutions for energy storage application.

“Rich experience and advanced technology in power grids is the fundamental premise for us to do energy storage business. CYG SUNRI is committed to providing energy storage system solutions with high cost performance, rationality, safety and stability. ”

In Xu Chengbin's view, electric power, as an important object of investment, will no longer have explosive growth as before, and the investment in power grid construction has entered a relatively stable stage. “Under such circumstances, it is not wise to put all eggs in one basket!” said Xu Chengbin. “We are actively expanding our business in the field of new energy, from PV and wind power stations to energy storage. Although now it is not the gold time for energy storage, the energy storage market is still very promising. Of course, the government's macro-control is needed for the development of energy storage. ”

CYG SUNRI's strategy for energy storage business is to pay close attention to environmental changes, concentrate on developing solutions and products, and make preparations to cater to the positive development of the future energy storage market.

Cope with the Changing Market by Sticking to the Fundamental Principle, and Strive to Make New Achievements

CYG SUNRI was established in 1994. Over the past 20 years, its assets have been growing continuously. With a registered capital of 700 million yuan and annual sales of nearly 2 billion yuan, CYG SUNRI has its business cover more than 60 countries around the world. In the past two decades, the company were given the labels such as "China's only", "China's first", "China's best" and "Asia's largest"; It has delved into power grid protection and automation control for more than 20 years. No matter how the market changes, CYG SUNRI always stick to professionalism!

As Xu Chengbin said, CYG SUNRI attaches great importance to upgrading and innovation, but all its upgrades and innovations are based on the original technologies. While it makes forward planning, it walks with a firm tread. It is this persistence that makes CYG SUNRI a leader in the field of power grid protection and automation!