Busbar is an important component of power plant and substation. When there is busbar failure of power plant or substation, if the fault is not removed in time, it may cause damage to many power equipment, affect the stability of power system, and cause power outage in substation. In severe circumstance, it may even cause collapse of the regional power system.Busbar protection is an important secondary system device to ensure safe and stable operation of the power grid, and its safety, reliability, sensitivity and fast response are of decisive significance to guarantee the safety of entire regional power grid. Therefore, it is very necessary to set up a busbar protection with safe operation, reliable action and good performance, so that the fault of busbar can be quickly detected and removed in a timely and selective manner.The BP microcomputer busbar protection independently developed by CYG SUNRI was introduced 1995. With the development of automation, digitization and intelligence of the power system, we have constantly innovated, and successively introduced digital, intelligent and distributed products.

The PRS-7395 merging unit and smart terminal isadevice integrating the smart terminal and merging unit of intelligent substation. It provides digital interfaces for traditional circuit breakers, knife switches and transformers, andcan provide the function of local operation box. It can be used asanintelligent accessory of traditional circuit breakers, knife switches and transformers.

With the large-scale popularization and application of intelligent substations, the demand for operation and maintenance of secondary equipment is continuously growing. To address this demand, CYG SUNRI independently developed the PRS-7012 operation and maintenance main station system based on the PRS-7002 secondary equipment state monitoring and intelligent diagnosis system according to the technical specifications formulated by State Grid Corporation of China.The main station system is deployed at the dispatching end of power grid, which can realize online monitoring and intelligent diagnosis and analysis of secondary equipment in the intelligent substation. The specific functions include: operating condition monitoring of secondary equipment, real-time monitoring of virtual circuit, anti-misoperation monitoring, fixed-value management, wave recording management, data query, statistical analysis, virtual terminal CRC online check, SCD file management and control, defect location, monitoring and early warning.

CYG SUNRI provides centralized PV power plant solution, including remote central control,integrated substation automation system, power forecasting, power control,CCTV and micro-computer inter-locking systemin case of mal-operation. The provided system equipment complies with thepowergrid connection specificationfor PV power stations. Moreover, advanced technical measures are provided to ensure the safe and stable operation of PV powerstation and carry out organization, coordination and operation management activities in a scientific and efficient way, whichcan help improve the work efficiency of operators, ensure the reliable operation of PV power station, and improve the safety management and economic benefits of PV power station.

CYG SUNRI provides primary and secondary integrated solutions of distributed PV power generation, which can meet the requirements of deployment and application in various scenarios. By following the principles of adaption to local conditions, cleanness and efficiency, dispersed layout, and nearby utilization, the local solar energy resources are fully utilized. It is convenient to start and stop power, and the investment is small with quick returns. Related solutions comply with relevant standards and specifications, and combined with specialized and efficient secondary equipment and operation & maintenance systems, this solution can enable smooth connection to grid by users.

According to the requirements forwind power generation,CYG SUNRI provides solutions such as remote centralized control, integrated automation of substation, power forecasting, power control, video monitoring, and microcomputer inter-locking systemin case of mal-operation,to ensure smooth grid connection of windpower plant,improve safety management and economic benefits of windpower plant, and reduce the construction and investment risks. (1) Land centralized wind power generation solution: It can meet the comprehensive monitoring, grid connection and dispatching requirements of windpower plants, and provide comprehensive real-time monitoring of wind turbines, anemometer tower, box transformer,step-up substation, and environmental monitoring system. (2) Land distributed wind power generation solution: It has achieved the core objective of "unattended, attended with fewer persons and regional maintenance" of substations and plants, a visual monitoring platform withdual structure of C/S and B/S is provided, and centralized monitoring and management of multiple unattended stations is implemented. (3) Offshore wind power generation solution:The system can provide remote monitoring and control of the equipment in the land metering station and the offshore step-up substation, and achieve various closed-loop control functions according to the requirements of the power grid operation mode.

On September 23, the 2022 PV New Era Forum with the theme of “Creating a Zero-carbon Future with PV Technologies" and the 11th “BJX Cup” PV Influential Brand Award Ceremony came to a successful conclusion in Nanjing, Jiangsu. More than 100 guests gat

From September 5 to September 7, 2022, the 6th China (Nanjing) International EV Charging Technology Expo was held in Nanjing. It was jointly hosted by State Grid Smart IoV Technology Co., Ltd., the National Automobile Quality Supervision and Inspecti

On August 19, 2022, the comprehensive energy project in CYG Intelligent Industry Science Park invested and constructed by CYG Comprehensive Energy (Shenzhen) Co., Ltd. ("CYG Comprehensive Energy", formerly known as "Dongguan CYG SUNRI Comprehensive E

On December 3, the "Lancang" EMU train slowly departed from Vientiane Railway Station, the capital of Laos, marking the operation of the whole line of China-Laos Railway.

On July 15, 2021, CYG Sunri supported the one-time completion of the black start test of the Black Start Technical Transformation Project of 9E gas Turbine Unit in Nanshan Thermal Power Plant.

Recently, CCTV reported that the construction of Beijing and Yanqing competition areas of the 2022 Beijing Winter Olympics was fully completed.

he previous relay protection and automation system of Nongki substation put into operation in 2000, and extend an 115kV line in 2010. After a long time operated, there are some problems that customers always facing to.

On December 18, 2018, the overseas PV EPC project of CYG SUNRI—Columbia 117kWp PREMEX Rooftop PV Project was successfully put into operation and provided power transmission.

In this project, as the general contractor of secondary equipment, CYG SUNRI supplied a complete product system and comprehensive system solutions for the project, including integrated monitoring system, integrated automation system, protection products, AGC/AVC and the main control room equipment and solutions