Abstract
A unified specification to design and operate the stability control device in smart substation has not been formed yet, which has greatly affected the promotion and application of stability control device in smart substation. Thus, referring to the technical specifications of protection device and combining to the specificity of stability control device, a full and detailed configuration scheme is proposed to meet the requirement, including the device configuration principle, the access configuration of SV and GOOSE for variable primary connection types, the virtual terminal and soft switch. This solution is beneficial to standardize the R&D of stability control device in smart substation, and to facilitate on-site debugging, operation and maintenance.
Highlights
Smart substations have entered the stage of comprehensive construction in China
The data to be processed by the smart substation stability control device is much larger than the relay protection equipment at a certain bay
According to the practice of domestic smart substation construction, the point-to-point sampling value transmission method of the IEC61850-9-2 protocol is generally adopted between the stability control device and each bay merging unit MU; some load lines below 110kV can use the network sampling value transmission method
Summary
Smart substations use digital technology to digitize the entire process of substation information collection, transmission, processing, and output They consist of intelligent equipment, communication network, unified model and communication protocol, automated operation management, etc. Security and stability control device are the second and third lines of defense, which are necessary to maintain the safe, stable and reliable operation of the power system. They are widely used in many conventional substations in China [4], but not the same case in smart substations. The data to be processed by the smart substation stability control device is much larger than the relay protection equipment at a certain bay. The design scheme has been widely used in the design of the stability control device of the domestic smart substation, which greatly reduces the site commissioning workload and the difficulty of engineering maintenance, and enhances the reliability of the device
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