Intelligent auxiliary monitoring solution for distribution station building

1、 Scheme Introduction

The comprehensive monitoring of the distribution room is an important part of the entire power management system. The full information collection and monitoring of the distribution room are of great significance for the application of automation operation management, maintenance, disaster prevention and warning, safety protection, and power demand management in the distribution room. With the rapid development of the power industry, the contradiction between power supply and demand has undergone significant changes. How to use high-tech to improve efficiency, reduce costs, and achieve efficient and high-quality services has become an important issue in the management of distribution rooms. The intelligent auxiliary monitoring system for the power distribution room is suitable for practical applications in power production and serves as a monitoring platform to ensure the safe operation of the power grid. The system can effectively extend the service life of equipment and reduce the failure rate of equipment operation; Realize the transition from periodic maintenance to status based maintenance in operation and maintenance, and improve the level and efficiency of operation and maintenance; Realize the operation of the distribution room to be self-healing and maintenance free.

2、 Scheme system architecture

The overall system is implemented through the intelligent auxiliary monitoring platform of the provincial company's distribution room, data exchange and transmission system, and station end intelligent monitoring system to achieve data exchange and linkage of the system. Among them, the auxiliary monitoring platform is generally deployed in the provincial company's information intranet.

The station monitoring system communicates with the edge IoT agent (station gateway), dynamic environment host, and video terminal equipment to collect and upload data within the station. As shown in the above figure. The distribution station has remote and local monitoring and control functions such as video surveillance, intelligent door locks, abnormal entry, smoke alarm, water level monitoring, SF6 gas monitoring, temperature and humidity monitoring, fan control, air conditioning control, etc. All data is analyzed through edge IoT agents (station gateway) for various alarm and monitoring data, timely controlling on-site alarms and uploading alarm signals, and enabling linkage control and remote control of auxiliary equipment such as lights, fans, dehumidifiers, air conditioners, and drainage pumps.

3、 Introduction to scheme functions

1. Real time monitoring

Through the video monitoring module, distribution operation and maintenance personnel can remotely view the operation status of the distribution station building, and can verify the accuracy of alarm information through video monitoring equipment to make reasonable maintenance plans in a timely manner.

2. Remote intelligent inspection function

This system can inspect the switchgear inside the switching station. According to the different inspection contents, it is divided into multiple types of inspections, with powerful functions and multiple operation modes, making it easy to use. The types of inspections generally include equipment inspections, security inspections, and individual inspections. Remote inspection adopts the method of correlation combination inspection. When conducting remote inspections on a certain device, the display page should also show the name of the device, the temperature and humidity of the area where the device is located, the status of environmental equipment such as lighting and security equipment, and the readings of all instruments related to the device; It can automatically output inspection reports.

3. Power environment monitoring

The system power environment monitoring function can collect relevant environmental information of the distribution room and generate alarm information according to the set alarm threshold. The information collected by the system includes: environmental temperature, humidity, SF6 gas concentration, ozone concentration, oxygen content, smoke concentration, fire, water level or immersion information, dust, noise, vibration and other information.

In addition, the system can achieve control and management of power environment control machines, fans, air conditioners, dehumidifiers, lighting and other equipment, and configure linkage schemes based on relevant indicators of environmental monitoring data to control and manage air conditioners, fans, water pumps and other equipment. Through on-site monitoring information, control instructions are automatically issued to intelligently adjust the operating environment of the distribution station building.

4. Online monitoring of equipment

Through the online detection module, the operation status and parameter detection data of power equipment can be collected. The intelligent auxiliary monitoring system of the distribution station can monitor data objects including: distribution transformer operation noise, connection pile head temperature, cable connection pile head temperature inside the medium voltage switchgear, partial discharge of the medium voltage switchgear, condensation status inside the medium voltage switchgear, and generate alarm information according to the set threshold.

5. Linkage control

The system platform monitors the operating status of the power environment equipment in the distribution room and sets up various deployment and disarming, video linkage, and lighting control linkage schemes. It can timely diagnose faults and generate linkage operation plans and alarm information, remotely control and adjust remote devices. The system can achieve the following linkage functions:

Ø Temperature and humidity monitoring and air conditioning (fan) linkage;

Ø Water immersion/level monitoring and pump linkage;

Ø The fan (self starting) is linked to the concentration of harmful gases;

Ø Smoke and power supply, video linkage;

Ø Access control and infrared deployment/removal, lighting, and fan linkage;

Ø Video is linked with security and environmental monitoring.

6. Security access control management

The system can implement security access control management function, which can record the entry and exit of personnel through access control, and unify the scheduling and management of personnel. The system grants staff access to the power distribution station with delayed authentication function; The system can achieve arbitrary deployment and removal of alarm devices, with anti intrusion functions. Through access control management, deployment and removal plans can be set.

7. Intelligent device management

The system can achieve digitalization of equipment management, and efficient equipment management can be achieved through data visualization and automated identification functions. It can easily query the area and location range of the equipment with one click, realizing fine management of equipment management from procurement to scrapping. This enables the full cycle and controllability of human and material resources investment costs throughout the service life, achieving a leap in the quality of equipment monitoring and management.

Implement comprehensive analysis of online detection data, real-time status analysis and evaluation of equipment, and statistical analysis of detection data integrity, consistency, and timely collection.

8. Centralized management

8.1 Log management function

The platform automatically generates operation logs, including operation logs, alarm logs, system exception logs, etc., which can be easily queried and printed out in the form of reports.

8.2 Report

The report function implemented by configuration is relatively simple, and this type of report can be generated regularly. The data inside is historical data of device measurement points over a period of time, which can be displayed graphically. The format is fixed, and the report is generated from a template. The report can be generated by exporting historical curves from the platform page or by configuring the data saving module.

8.3 Alarm and event management

When users need to view historical alarm events for analysis, they can call the historical event and log query program, select a combination of conditions (device range, time range, level range, event type, confirmation status, and confirmation time) for query, obtain the required historical events, and export them as reports. In this query interface, historical events can also be confirmed.

8.4 Rights Management

Support security management functions for user permissions and meet the following requirements:

1) Provide authentication and access control, authenticate the identity of operation and maintenance personnel, and generate alerts and log records for unauthorized user access;

2) Ability to set user roles according to access permissions and allocate accessible resources based on access permissions.