Unattended substation emergency monitoring system

Abstract

The invention relates to an unattended substation emergency monitoring system which comprises an in-station monitoring background monitoring system, an outdoor device mobile monitoring system, an indoor device mobile monitoring system, a fixed-point monitoring system, an audio acquisition device, a station-end data server, a terminal server and a man-machine interaction platform. The in-station monitoring background monitoring system acquires data information of an unattended in-station background monitoring system. The mobile monitoring systems are arranged indoors and outdoors and respectively monitor indoor and outdoor device appearances and heating situations. The fixed-point monitoring system is used for fixed-point monitoring of during breakdown and communication outage of a single device. The audio acquisition device performs device audio acquisition, analysis and transmission under the situation of abnormal sound of devices. The systems are connected with the station-end data server carried to an unattended substation through a wireless network. The station-end data server sends specific data to the terminal server according to the instructions of the terminal server so as to enable access of workers through the man-machine interaction platform. The system has wide adaptability.

Description

technical field [0001] The invention relates to the field of substation monitoring systems, in particular to an emergency monitoring system for unattended substations. Background technique [0002] With the development of power technology and the implementation of the "three sets and five majors" system in the State Grid Corporation, more and more substations are developing in the direction of unattended operation. For unattended substations, ensuring that the operation status of substation equipment is always in a controllable state is a prerequisite for safe and reliable operation of the power grid. The monitoring of unattended substations is divided into monitoring under normal conditions and monitoring under special circumstances. [0003] For monitoring under normal conditions, most of the current unattended substations use a combination of power grid monitoring control and data acquisition system (SCADA system), video system, fire protection system and other auxiliary...

AI Technical Summary

Problems solved by technology

The problems of using this method are: 1. Most of the unattended substations are located in remote areas. Reverting to manned substations not only consumes manpower, but also cannot guarantee the living conditions of the on-duty personnel; 2. For non-full-station communication interruptions, and Only when there is a problem with the communication in the station (for example, the communication interruption occurs in the main transformer interval, resulting in the failure to collect the switch state, current magnitude, etc.), for the monitoring of the communication interruption equipment, the on-duty personnel cannot monitor the equipment status for a long time and make an alarm

Therefore, regardless of whether the communication of local equipment is interrupted or the communication of the whole station is interrupted, the practice of restoring manned duty obviously cannot meet the requirements for real-time monitoring of substation equipment

[0006] 2. Tracking and monitoring of defective equipment

The problems of using this method are: 1. For unattended substations, it is necessary to frequently send personnel from the operation and maintenance station to the unattended station, and there are problems such as untimely defect tracking, time-consuming and laborious, and high operation and maintenance costs; 2. Using Manual inspection is affected by the professional quality and responsibility of the operators, and the inspection effect cannot be guaranteed; 3. Manual inspection cannot realize continuous real-time monitoring of equipment, and cannot provide sufficient data support for analyzing the causes of equipment defects and predicting the development of defects; 4. For the defect of equipment abnormal sound type, due to the noise of the substation transformer equipment itself, the abnormal sound audio of the equipment cannot be accurately obtained even through the video monitoring system

The problems with this method are: 1. Although the background monitoring can monitor information such as equipment current and switch status, under high load conditions, the heating of various parts of the equipment cannot be completely monitored; 2. On-site manual inspections also have inspection quality Disadvantages of no guarantees and no continuous real-time monitoring

Therefore, for the emergency monitoring of equipment in the case of guaranteed power supply and high grid risk, the method of background monitoring and manual inspection alone still cannot meet the requirements

[0008] It should be noted that at present, some unattended substations have also introduced intelligent inspection robots to replace manual inspections, which partially avoids the problems of manual inspections that consume a lot of manpower and cannot guarantee the inspection effect

However, the intelligent inspection robot has the following problems: 1. The cost is high, and a large amount of human and financial resources must be invested in the early research and development of the project and the later maintenance; 2. It can only be used for a single station and cannot be transplanted to other unattended stations. Most inspection robots use geomagnetic orbits or other orbits for navigation, and some teams use space modeling for robot navigation. The common points are that they require a lot of initial investment and preparation, and their portability is poor, so they are not suitable for emergency treatment.

Therefore, intelligent inspection robots cannot meet the monitoring requirements of equipment in emergency situations

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