CAJ | 학술논문

针对国内智能变电站继电保护现状，提出一种智能变电站继电保护架构，该架构将继电保护分为两个层次，现场就地安装的单间隔保护、MU和智能终端。预制舱安装的多间隔保护、站域级保护以及就地保护管控单元。就地安装的继电保护电缆直接采样、电缆跳闸，提高保护的安全可靠性；就地安装的MU和智能终端为站域保护、多间隔保护提供SV和GOOSE数据。保护管控单元为就地保护提供人机界面、状态监测等高级管理功能。该架构单间隔保护不依赖网络，多间隔保护数据点对点传输，站域保护依赖网络，解决了智能变电站光纤数量大、交换机多、保护环节增多导致可靠性降低的问题。
침대국내지능변전참계전보호현상，제출일충지능변전참계전보호가구，해가구장계전보호분위량개층차，현장취지안장적단간격보호、MU화지능종단。예제창안장적다간격보호、참역급보호이급취지보호관공단원。취지안장적계전보호전람직접채양、전람도갑，제고보호적안전가고성；취지안장적MU화지능종단위참역보호、다간격보호제공SV화GOOSE수거。보호관공단원위취지보호제공인궤계면、상태감측등고급관리공능。해가구단간격보호불의뢰망락，다간격보호수거점대점전수，참역보호의뢰망락，해결료지능변전참광섬수량대、교환궤다、보호배절증다도치가고성강저적문제。
In view of the current situation of the relay pro-tection in smart substations,this paper proposes an architecture of smart substation relay protection. The architecture divides the replay protection into two levels. The devices of the first level consist of the protection of the single-unit, MU and smart terminal device locally mounted. The devices of the second level consist of the multi-unit, domain-level protection and local protection and control units. The locally mounted relay Protection links the TV/TA and trips with cable to improve the safety and reliability of the relay protection while the locally mounted MU and smart terminal device provide SV and GOOSE data to the multi-unit protection and domain-level protection. The control unit of the protection provides human-machine interface,status monitoring and other advanced management functions. In the architecture,the single-unit protection does not rely on the network,and the multi-unit protection uses the point-to-point data transmission, and the domain protection relies on the network. The architecture helps to solve the problem of the reliability reduction attributed to too much fiber and too many switches needed and increased protection links.