CN203929246U - Substation equipment temperature-detecting device - Google Patents

Abstract

Substation equipment temperature-detecting device, comprises real-time monitoring system, Control Server, wireless sensing temperature measuring equipment, 2.4G wireless network composition.Wireless sensing temperature measuring equipment is made up of thermometric chip, CPU processor, radio-frequency module and high-temperature battery etc., wireless sensing temperature measuring equipment is directly installed on heating place of substation equipment, wireless sensing temperature measuring equipment temperature signal output terminal is connected with thermometric chip temperature signal input part, thermometric chip signal connects CPU processor, temperature data by wireless radio frequency modules with wireless signal by CAN, industry ethernet by temperature data uploading to main frame.The utility model adopts the sensor device operation of wireless temperature measurement to replace artificial thermometric operation, realizes the detection record of substation equipment running temperature, and wireless temperature measuring device is installed simple, reliable and stable, remarkable in economical benefits, and economic and practical is strong.

Description

Substation equipment temperature detection device

technical field

The utility model relates to a wireless temperature detection technology applied to long-distance real-time measurement of equipment operating temperature in a substation and wireless sensor data communication, transmission and recording, in particular to a wireless real-time temperature detection device for substation equipment.

Background technique

Substation is an important part of power production, which completes the voltage level up and down processing and provides important support for the stable supply of power. A large number of equipment and instruments are running in the substation, including transformers, circuit breakers, knife switches, lightning arresters, capacitors, switchgear, etc. The stable operation of these devices ensures the normal operation of the substation. Due to the high voltage and current in the substation, the temperature of the equipment will rise when it passes through the electrical equipment, and the substation operates continuously, and the temperature of the equipment will rise when the equipment is in operation for a long time. With the prolongation of the temperature rise of the equipment, the degree of oxidation of the equipment will be increased due to heat generation at the place where the temperature exceeds the limit, which will cause combustion, explosion and even equipment damage or quality accidents. Therefore, in the operation and maintenance management of the substation, it is required to regularly monitor the temperature of the equipment in the substation. For a long time, traditional manual inspection methods have been used to measure the heating temperature of electrical equipment nodes. It is impossible to grasp the temperature of the equipment in a timely and accurate manner. When the temperature of the equipment is abnormal, it prompts for reminder processing. The substation has basically realized unattended or few people on duty. The digitization and intelligence of substations and the construction of smart grids urgently require remote, intelligent, online, and real-time monitoring of the heating temperature of electrical nodes in operation. All-weather temperature monitoring and active early warning of substation equipment are problems that need to be solved urgently in the operation and management of substations.

At present, the realization of the temperature measurement method of substation equipment operation is mainly carried out through the manual use of temperature detectors and infrared thermal imaging. The problems and loopholes in this way are:

1. A large number of equipment and instruments are running in the substation. Due to the scattered locations, the means of fault testing are limited, and the point where the operating temperature of the equipment exceeds the limit is not easy to be found. However, because capacitor cabinets and switch cabinets are in a closed environment, it is impossible to install a temperature measuring device for real-time temperature measurement.

2. The substation adopts the traditional wax sheet temperature measurement method, which has low accuracy and cannot store temperature data in real time. The infrared imaging temperature measurement method is too restricted by the site, the installation of the imager is inconvenient, and the real-time performance of the temperature measurement data is poor.

3. The main transformer, knife switch, circuit breaker, lightning arrester and other equipment in the substation require operation and maintenance personnel to go to the site regularly to measure the temperature, and the manual collection and input workload is heavy; high-voltage equipment poses hidden dangers to personnel safety during manual operation.

The above-mentioned problems exposed in the temperature measurement process of substation equipment operation cannot be solved by the original method, and cannot meet the management and development needs of unattended substations.

Utility model content

The technical problem to be solved by the utility model is to provide a wireless real-time temperature measurement, collect temperature data, and conduct centralized monitoring and management, reduce the workload of on-site temperature measurement, ensure the safety of personnel, and overcome the scattered location of equipment and instruments and the closed environment The equipment in the cabinet and the point where the operating temperature of the equipment exceeds the limit are not easy to be found, and the temperature detection device for substation equipment that cannot be installed with a temperature measuring device for real-time temperature measurement.

The technical solutions adopted are:

The temperature detection device for substation equipment is composed of a centralized control center, a real-time monitoring system, a control server, a centralized control terminal, a wireless sensor temperature measurement device, and a 2.4G wireless network. The sensor network transmits the data to the centralized control terminal, the centralized control terminal connects to the control server through LAN/RS485/CAN, the control server transmits the data to the real-time monitoring system, and the real-time monitoring system transmits the data to the centralized control center.

The wireless sensing and temperature measuring device is used to measure the surface temperature of the charged node. It is composed of a temperature measuring chip, a core processor, a radio frequency module and a high temperature resistant battery. The temperature measuring chip is used to measure the temperature value of the device, and perform digital-to-analog conversion. The data is transmitted to the core processor for data conversion and storage; the core processor controls the radio frequency module for wireless communication connection.

The utility model creatively adopts the wireless temperature measurement technology to complete the real-time temperature monitoring of substation equipment by wireless sensing temperature measurement device (including core processor and radio frequency module), centralized control terminal and real-time temperature measurement system. The wireless sensor temperature measurement module sends the monitored real-time temperature data to the centralized control terminal in the form of 2.4G radio frequency. The transmission distance is greater than 100m. The centralized control terminal supports multiple communication methods, which can be connected to the control server through the LAN/RS485/CAN interface. , displayed on the spot, or displayed on the LCD screen, and can also be transmitted to the remote data center in the form of GSM/GPRS. It meets the technical requirements for online monitoring of the power system, and can conveniently, safely and reliably connect the received real-time temperature data to the data monitoring center of the power system. The beneficial effects are:

1. The utility model realizes wireless temperature measurement of substation equipment by means of wireless temperature measurement equipment temperature. Advanced wireless temperature measurement and monitoring technology, accurate real-time temperature monitoring data, easy installation, stable and reliable operation. It meets the technical requirements for online monitoring of the power system, and can be easily, safely and reliably connected to the data monitoring center of the power system.

2. This utility model replaces the manual patrol temperature detection method, and achieves real-time online remote intelligent monitoring of the heating status of electrical nodes, realizes temperature over-limit alarm, prevents and reduces the occurrence of electrical accidents, and greatly improves the safe operation of electrical devices The level and reliability of power supply provide indispensable technical support for the construction of smart grid, which brings significant grid benefits and social and economic benefits.

3. Wireless temperature measurement technology is suitable for on-line monitoring of the heating temperature of electrical nodes during the operation of substations, power plants and power distribution devices of different voltage levels, and it is also suitable for online monitoring of temperature in other fields.

The design of the utility model is scientific, reasonable, and full of creativity. The operation of the sensor equipment with wireless temperature measurement is used instead of the manual temperature measurement operation, and the detection and recording of the operating temperature of the substation equipment are realized. The wireless temperature measurement device is simple to install, stable and reliable, and has significant economic benefits and economic It is practical and has a good development prospect. The wireless temperature measurement technology for substation equipment is an inevitable trend and requirement for the development of power production automation and informatization, and it is also an indispensable technical support and guarantee for the construction of a strong smart grid.

Description of drawings

Fig. 1 is a block diagram of the real-time monitoring system of the present invention.

Fig. 2 is a schematic diagram of the wireless sensing temperature measuring device of the present invention.

Detailed ways

Real-time temperature detection device for substation equipment, including real-time monitoring system, control server, centralized control terminal, wireless sensor temperature measurement device, and 2.4G wireless network. The wireless sensing temperature measuring device is used to measure the surface temperature of the charged node, and is composed of a temperature measuring chip, a core processor, a radio frequency module and a high temperature resistant battery. The temperature measurement chip is used to measure the temperature value of the device, perform digital-to-analog conversion, and transmit the data to the core processor, which performs data conversion and storage. The core processor controls the radio frequency module, performs wireless communication connection, and completes the sending of temperature measurement data. The high-temperature-resistant battery can run in the accessories of high-voltage equipment in the substation, and is not affected by the high-temperature environment, so as to ensure the normal operation of each module of the temperature measuring device and provide the power required for work. The wireless temperature sensor is directly installed on the heating part of the substation equipment. Each sensor has a unique ID code, records the geographical location of each monitoring point, and enters it into the database of the real-time monitoring system together to identify the temperature measuring equipment. The temperature measurement chip signal is connected to the core processor, and the core processor runs the system internally to complete control instructions and data processing. The temperature data is transmitted to the central control terminal receiving the radio frequency signal through the wireless radio frequency module, and the central control terminal uploads the temperature data to the control server through the LAN/RS485/CAN bus. The control server sends the data to the real-time monitoring system, and the centralized control center processes and saves the temperature data, displays the temperature of each monitoring point in real time with a graphical interface, analyzes the temperature change trend of the monitoring point, and compares the relative temperature rise of the equipment and the environment , analyze possible overheating or rapid temperature rise, send early warning signals in advance, and remind managers to deal with them.

working principle:

(1) Install the wireless sensing temperature measuring device on the substation equipment, using two methods of glue sticking and screw fixing, and install it directly on or around the temperature measuring device, and set the internal code ID of the wireless sensing temperature measuring device Binding, identifying the identified temperature sensor data value. The wireless sensing and temperature measuring device is powered by an internal high temperature resistant battery and does not require an external power supply. In the working state, the wireless sensing temperature measurement device establishes a communication connection with the centralized control terminal through the wireless radio frequency module, receives the temperature measurement command sent by the monitoring system, and processes the temperature measurement command by the core processor to control the temperature measurement chip to measure the temperature of the device. After the measurement is completed, the temperature data is transmitted to the core processor, and the internal program of the core processor is encrypted and packaged to form a temperature measurement data package. The data is sent to the centralized control terminal equipment through the radio frequency module, and then transmitted to the monitoring system through the centralized control terminal equipment. Realize real-time temperature measurement of equipment in the substation, and wireless temperature measurement of indoor and outdoor equipment in the substation;

(2) On the substation equipment temperature measurement node, each wireless sensor temperature measurement device installed will establish a 2.4G wireless sensor network channel through its own radio frequency module and centralized control terminal, and transmit the measured equipment temperature data to the centralized control terminal Terminal, centralized control terminal summarizes the temperature measurement data received, and transmits the data back to the control server within the set time. The number of installations is determined according to the area of the substation, and normally the sensors cover an area of 100 meters. More than 100 meters can be completed by adding centralized control terminal equipment;

(3) The centralized control terminal is used to receive the temperature measurement data of the wireless sensor temperature measurement device. The central control terminal has a variety of interfaces and supports a variety of communication methods to adapt to different use occasions and needs; in the substation, it can be connected to the comprehensive information system of the monitoring center or PC through the LAN/RS485/CAN bus; it can also be connected through the GSM/ The GPRS wireless public network is remotely transmitted to the monitoring center and the mobile phone of the full-time personnel; the processor inside the centralized control terminal runs the control program, receives the data packet of the wireless sensor temperature measurement device, and periodically collects the collected data according to the time interval setting of the temperature measurement and monitoring system. The data is sent to the control server, and the control server sends the data to the real-time monitoring system.

(4) The real-time monitoring system stores the final measured equipment temperature data in the database, and displays the real-time temperature status of the equipment in the substation in a graphical way. Display the real-time temperature, temperature rise change, historical temperature curve, high temperature warning prompt, etc. of each device.

Claims (1)

1. substation equipment temperature-detecting device, formed by centralized control center, real-time monitoring system, Control Server, collection control terminal, wireless sensing temperature measuring equipment, 2.4G wireless network, wireless sensing temperature measuring equipment gathers thermometric, by 2.4G radio sensing network, transfer data to collection control terminal, collection control terminal connects Control Server by LAN (Local Area Network)/RS485/CAN, and Control Server transfers data to real-time monitoring system, and real-time monitoring system transfers data to centralized control center;

It is characterized in that wireless sensing temperature measuring equipment is for measuring the surface temperature of charged node, formed by thermometric chip, core processor, radio-frequency module and high temperature resistant battery, thermometric chip is for measuring equipment temperature value, carry out digital-to-analogue conversion, send data to core processor, carry out data-switching and storage by core processor; Core processor control radio-frequency module, carries out wireless telecommunications connection.