System and method for monitoring photovoltaic power supply low power consumption contact net and power supply equipment

Abstract

The invention relates to a system and a method for monitoring a photovoltaic power supply low power consumption contact net and power supply equipment. The system comprises an LORA (Level Of Repair Analysis) data acquisition node, an LORA data gateway, a server, a management end and a monitoring end. A server is adopted as central equipment for interaction processing of different function data ofthe system and is in charge of storing, summarizing, analyzing and processing data of the monitoring system; the LORA data acquisition node is mainly in charge of acquiring service data and transmitting to the LORA data gateway; the LORA data gateway is mainly in charge of uploading data transmitted back from the node to the server; the management end is used for managing and setting related parameters of different monitoring points, used for browsing and checking current operation states of different compensation devices, and used for demonstrating A / B curve diagrams and carrier cable contactwire tension curve diagrams of weights in a diagram mode in real time according to a safety value range; and the monitoring end comprises a plurality of ports such as PC (Personal Computer) web and mobile phone APP (Application)and is used for monitoring weight states of different compensation devices. The system has the advantages of low power consumption and low temperature resistance, and thusthe system can be normally operated in severely cold environments of minus 50 DEG C.

Description

technical field [0001] The invention relates to the field of monitoring systems, in particular to a photovoltaic power supply low-power catenary and power supply equipment monitoring system and method. Background technique [0002] China Railway Corporation's "High-speed Railway Catenary Operation and Maintenance Rules" (Tie Zongyun [2015] No. 362) and China Railway Corporation's "General Speed ​​Railway Catenary Operation and Maintenance Rules" (Tie Zongyun [2017] No. 9) both require Relying on "catenary equipment should make full use of railway power supply safety inspection and monitoring system (6C system) and other means, conduct regular inspections, carry out instant and regular analysis and diagnosis, define equipment status according to standard values, warning values, and limit values, and divide defect levels (two level defects) to provide a basis for equipment maintenance". [0003] With the continuous improvement of railway operating speed, the reliability requi...

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of railway operating speed, the reliability requirements for catenary are getting higher and higher, and the mileage of electrified railway is getting longer and longer. The workload of high-speed road inspection and catenary inspection is becoming increasingly heavy; The vibration range of line tension is an important factor that directly affects the normal operation of the catenary; the ratchet compensator is prone to problems such as eccentric wear of the compensation rope, deflection of the balance wheel, and sticking of the weight; and when the high-speed train is in contact with the catenary , due to the catenary has a certain elastic force, under the action of the train pantograph, the catenary has a certain lifting force, and then the tension and vibration of the catenary in the anchor section will change. When the change exceeds the set range, It will cause an arc between the pantograph and the contact wire, which will endanger the driving safety.

At present, the above problems are monitored through manual inspection or professional inspection vehicles, but neither of them can achieve real-time monitoring results, and inspections need to be carried out in a specific skylight period

[0004] With the development of the Internet of Things technology, some remote monitoring systems have also appeared, but the existing monitoring systems have problems such as scattered monitoring equipment, high power consumption, high cost investment, and large errors.

For example, when the existing monitoring system monitors the A / B value of the catenary compensation device, laser and ultrasonic are usually used, but laser and ultrasonic have many shortcomings in the measurement process: they have high requirements on the environment, and the two are generally at -20°C In areas with low temperature or harsh conditions, it cannot be used; when the ultrasonic wave is snowing and raining, its energy will be refracted and absorbed, and the accuracy of data collection is not enough; the laser line is difficult to feed back under strong light, and the data The error is large; when it snows, the laser and ultrasonic energy ports will be covered, making it impossible to monitor

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