Intelligent auxiliary multi-dimensional monitoring solution for substations

1、 Scheme Introduction

The definition of intelligent power grid by State Grid Corporation of China is: based on a strong power grid with ultra-high voltage power grid as the backbone network and coordinated development of power grids at all levels, utilizing advanced communication, information and control technologies to build a unified and strong intelligent power grid characterized by informatization, automation and interactivity.

self2008Since the implementation of the "smart grid" construction by State Grid Corporation of China in, significant progress has been made in primary equipment, protection equipment, information management systems, and other aspects. However, in terms of positioning, planning, management, comprehensive application, and information sharing of substation auxiliary systems, they are no longer able to fully meet the construction needs of intelligent power grids, especially in terms of meeting the requirements The actual demand for unmanned substations.

With the deepening of unmanned operation and the promotion of integrated regulation, it is urgent to build a monitoring system for substation operation and maintenance services.

The multi-dimensional intelligent remote inspection system independently developed by the company utilizes modern video intelligent analysis and trend analysis methods to solve problems related to the confirmation of the opening and closing status of the operating knife switch, the confirmation of the display status of the control cabinet, the remote confirmation of instrument readings, and the remote confirmation of oil temperature and oil level in unmanned substations. It ensures the safety of remote operation of electrical equipment, shortens the response time in emergency situations of unmanned substations, and lays a solid foundation for achieving true remote operation of unmanned substations.

The multi-dimensional intelligent remote inspection system is designed according to the physical area of the substation and the actual equipment layout in each area, combined with the requirements of "five connections and one measure" for inspection, to achieve a close integration between system application and actual production scheduling and operation.

2、 Scheme system structure

1. Network architecture design

At the substation end, the multi-dimensional intelligent remote inspection information platform adopts independent networking and can receive various operation information from the station end integrated self system; The main station of the video center communicates with the multi-dimensional intelligent remote inspection system information platform at the station end to obtain relevant remote viewing, telemetry, remote control, and remote signaling data.

2. Organizational structure design

All auxiliary systems of the substation are connected to the control host of the multi-dimensional intelligent remote inspection information platform of the substation, achieving unified management of the auxiliary systems.

3. Design of hardware structure at the station end

The front-end of the system mainly includes: Integrated Monitoring Unit (MVU), Environmental Data Processing Unit (Multi functional Control Host), Intelligent Analysis Server, NVR and Network Camera, Intelligent Control Unit, Switch, Temperature and Humidity Probe, Safety and Fire Protection Access Module, etc.

3、 Scheme system functions

The system comprehensively considers the needs of the operation and inspection, scheduling, and safety supervision departments in substation management, and provides a comprehensive solution through a set of systems. The main functions include real-time monitoring, intelligent inspection, alarm management, safety control, SCADA linkage, infrared monitoring, and intelligent early warning.

1) Real time monitoring

Real time monitoring of video, infrared temperature measurement, and industrial environment of primary equipment such as main transformers and circuit breakers through tree menus, main wiring diagrams, and electronic maps.

2) Intelligent inspection

According to the inspection standards of the power grid company, we provide users with multiple inspection modes, automatically generate inspection reports, and determine whether the results are normal, partially replacing manual on-site inspections, greatly improving the efficiency of operation and maintenance personnel inspections and reducing safety risks caused by on-site inspections.

The main types of inspections are comprehensive inspections, daily inspections, night inspections, and special inspections.

3) Alarm management

By using technical means to obtain the protocol of the fire protection host, automatic diagnosis of front-end detector and host faults can be achieved, solving the current problem of only receiving the total alarm signal.

4) SCADA linkage

When the SCADA system issues a remote control command to a certain device, the linked video automatically displays all on-site image information of the device, as well as industrial environment information of the area where the device is located, ensuring the reliability of remote control operation.

5) Security control

The system can achieve safety control over the entire process of each work order team through data collection and intelligent analysis. Including: vehicle entry and exit recognition, personnel entry and exit registration, safe operation area management, tool management, access control (one key access) management, safety helmet detection, etc.