Hangzhou Hansong Electric Co

The connection points of many high-voltage electrical equipment in high-voltage switchgear in power plants and substations are the weakest link in power transmission. During the long-term operation of the equipment, the essential problem of this weak link is the heating of the connection points. As the load increases, the connection points heat up and form a vicious cycle of temperature rise, expansion, contraction, oxidation, resistance increase, and temperature rise again. The temperature of these heating components cannot be monitored in real time, which ultimately leads to fire accidents. By monitoring the operation of the electric shock temperature in the switch cabinet, fires in the switch cabinet can be effectively prevented. However, due to the narrow structure of the high-voltage switch cabinet, manual inspection and temperature measurement cannot be carried out. Therefore, online temperature monitoring is to ensure the safe operation of the high-voltage switch cabinet. important means.
The front end of this system uses a wireless digital temperature sensor. The temperature sensor can be quickly and easily installed on the tested contacts of high-voltage charged objects, and can accurately track the temperature changes of the heating contacts. The wireless temperature sensor uses radio frequency technology to transmit temperature information, achieving The collector and the collected point are at the same potential, which is safe and reliable. The cabinet terminal of this product can accurately report the temperature rise of all the heat-prone components of the measured high-voltage equipment during operation, providing reliable data basis for the safe operation of the equipment. The temperature monitoring operation software installed in the municipal and district monitoring centers is powerful, and the system database is passed by human The computer interface intuitively displays geographical distribution maps, joint temperature operating parameters, warning information, historical parameters, etc. through graphics, tables, curves, bar graphs, etc., providing the most direct and reliable data basis for decision-makers to eliminate hidden dangers and maximize Reduce accidents.
The temperature monitor is equipped with a standard communication interface and can be operated on the Internet. Through the host computer, the operating temperature data of the switch cabinet can be recorded, providing a basis for the maintenance of the switch cabinet and realizing the predictive maintenance of switch cabinet failures.
This system not only saves a lot of manpower and material resources, but also shows that this product system has high temperature measurement accuracy, fast response speed, small size, easy installation, and real-time online compared with temperature wax sheets and infrared temperature measurement. , optical fiber transmission, strong anti-interference and other advantages, it is a revolution in traditional temperature measurement methods.
Technical parameters

Power supply



Frequency band

br/>
Communication protocol Standard

br/>
Temperature sensing method

Wireless transmission

Temperature measurement method

Digital The temperature sensor is in direct contact with temperature measurement

Temperature measurement channel

A single machine comes standard with a wireless temperature sensor and supports up to 2 temperature sensors

Instrument working environment temperature< br/>
℃~℃

Meter working environment temperature



Battery life

Years Enhanced type can reach more than 10 years

Communication interface

(Photoelectric isolation)

Distance between wireless temperature sensor and receiving device

Meters (considering environmental factors)

Communication distance

Meters

Temperature measurement range

~℃

Temperature sensor accuracy



Resolution



Sensor temperature tolerance

℃

Installation method

Embedded disk installation


System function
This system is tested It consists of two parts: temperature device and temperature analysis configuration software
)
Information collection function
This system uses wireless photoelectric temperature sensors to collect the temperature of high-voltage charged objects, such as dynamic and static contacts in high-voltage switch cabinets. busbar connection.
)
Wireless thermometer function
The microelectronic processor is composed of the most advanced modern electronic modules, which is highly intelligent, fast, stable and reliable. Each station has a channel for users to use. This equipment can digitally analyze and process the temperature information collected by the sensor in a timely manner, and the system can promptly obtain the normal, early warning, alarm and unbalanced temperature information of each measured point.
)
Operating status data display function
The system display is divided into three parts
Cabinet display terminal
The cabinet display module can display the normal and early warning of all tested contacts of this cabinet online in real time , alarm and three unbalanced temperature data. It can run automatically and perform manual inspection.
Station central control room display terminal
The power station central control room display module can display the normal, pre-warning, alarm and three unbalanced temperature data of the tested contacts of all tested switch cabinets in the power station online in real time. It can run automatically and perform manual inspection.
Domain Monitoring Center Operation Software
This software can be installed on the server of the regional monitoring center, and displays online in real time the normality and early warning of each measured point of any power station and any switch cabinet in all power stations in the controlled area. , alarm, and three unbalanced operating temperature data.
)Self-check function ensures equipment safety
Terminals at all levels of this system have automatic fault diagnosis, automatic reporting, and automatic recovery functions to ensure the reliability of system operation.
)
Communication function
Both the cabinet terminal and the power station central control room terminal are equipped with data communication interfaces. The system can transmit operating data to any address required by the user according to the user's requirements. Equipped with a dedicated conversion interface to realize local area network and remote network communication.
)
Storage and printing functions
The central control room terminal and system operation software are equipped with storage and printing modules, which can store the pre-warning, alarm, and three unbalanced operation data measured by the system according to time, The address is stored and the data can be printed into a written document if necessary.
Wireless temperature sensor The wireless temperature sensor consists of a temperature collection point and a wireless transceiver. The temperature collection point is extremely small and can be flexibly installed at any point of the object being measured. The temperature collection point is connected with a data line and a wireless transceiver in an equipotential form. The temperature data is wirelessly reported to the base station by the wireless transceiver in real time. Using radio frequency technology to transmit temperature information, the collector and the collected point are at equal potential, which is safe and reliable.
Temperature monitoring center station software
This software runs on the host computer and is used to process the cabinet temperature data collected and sent by each power station. It has a powerful database for calculation, display of warnings, storage and printing. This software must be ordered separately.
Taking into account the development ideas of unattended stations, the server is maintenance-free
The system software is simple to operate and has a clear interface
The system software can display and store the actual temperature of each temperature measurement point in real time
/>The statistical function of the system software can record and store the temperature data of the temperature measurement point and the alarm time, and can display the historical data graphically for easy analysis
The system software can provide high temperature warning and alarm prompts
System software support Data network sharing, support browsing
This system is mainly used to monitor the heating-prone components of high-voltage electrical equipment in the power grid
Online monitoring of the moving and static contacts of high-voltage switch cabinets and the temperature of various contacts in the cabinet
Next Online monitoring of the temperature of high-voltage cable joints and other high-voltage heat-prone parts in cable trenches
Online monitoring of station main transformer temperature
Online monitoring of the temperature of power plant substation equipment and cable joints in cable trenches.