Secondary System Of Smart Substation Research Articles

Research on Fault Diagnosis and Location Technology of Secondary System Smart Substation

This paper for the secondary system fault diagnosis Smart Substation location problem. By using fault feature, evidence table and information relationships, the basic evaluation method of the sampling abnormalities of relay apparatus, synchronization abnormalities of multiple MUs, channels abnormalities and operation abnormalities is specifically analysed. An example based on information relationships is given and the functional structure of the secondary fault diagnosis and evaluation system of the main and substation modes is designed, which provides reference for the basic technical methods and implementation methods for the fault diagnosis and location of the secondary system of Smart Substation.

A Joint Verification System for the Secondary Equipment Safety Measures in Smart Substation

The secondary system of smart substation has high characteristics of network and integration. The secondary circuit and its safety measures are characterized by strong concealment and poor visualization. There is a great safety risk in the implementation of secondary equipment safety measures. In this paper, a joint verification system of secondary equipment safety measures for smart substation is proposed. The joint verification system uses the monitoring system and the third-party safety measure monitoring equipment to jointly arrange defence, carry out the whole process verification of the implementation process of the secondary equipment safety measure ticket, and carry out visual display, effectively ensuring the correctness of the implementation of the secondary equipment safety measure.

Research on Interface Mode and General Information Transmission Technology in smart Substation

Through the analysis of the system architecture of smart substation, the interface mode and information transmission protocol between secondary equipment and primary equipment are defined. The general information transmission protocol for data acquisition and control instruction transmission is studied, which improves the reliability and security of the secondary system of smart substation.

Research on Secondary System of Smart Substation

This article has completely analyzed and introduced the intelligent substation secondary system. Firstly, the structure of the “three-tier and two-network” of the secondary system of the smart substation is introduced, and the concepts of “three-tier” and “two-network” are described in detail. Secondly, according to the three classifications of “station control layer”, “space layer” and “process layer”, the configuration and related requirements of the secondary equipment of the smart substation under different voltage levels are introduced in detail. Finally, the network structure of the secondary system of the smart substation is introduced, and the IEC 61850 system and the smart substation network structure are described in detail.

System-Level Field Test Platform Development for Secondary System in Smart Substation

At present, secondary system in smart substation lacks field test way. This paper proposes the implementation scheme of system-level field test system. System feasibility, test platform architecture, testing process, principle of the algorithm, software and hardware design and testing system application are presented in the paper. It systematically demonstrates the design idea and the design detail of the platform. The promotion of system-level field test platform can improve efficiency of test for secondary system in a valid way and current limitations of depending on integration testing in commissioning. What is more, it proposes a new idea of operating maintenance and corrective maintenance under the environment of using the platform.

Research on the Calibration Method for Merging Unit of the Smart Substation with Analogue Input

本文明确了模拟量输入式合并单元的校验方法，探索出多间隔合并单元发送数据同步性的校验方法，实现了运用站内已有设备对多个合并单元相互配合时输出SV数据的同步性测试，解决了继电保护专业在智能变电站调试验收阶段多间隔合并单元校验的难题。使合并单元运行性能可控、在控，为智能变电站二次系统的可靠运行提供保证。 The paper defined the calibration method for merging unit of the smart substation with analogue input, explores the calibration method for the synchronization of sending data in multi-bay merging unit, actualizes the synchronous test of the output SV data in the application of the existing equipment in the station, and solves the problem about calibration of multi-bay merging unit in the intelligent substation commissioning and acceptance stage of relay protection. The method enables the merging unit to run the performance to control and in control, and provides guarantee for the reliable operation of the secondary system of smart substation.