ATE400 switchgear wireless temperature measurement device

Description :

　　ARTM series electrical contact online temperature measurement device

　　The informationization of the ATE400 switchgear wireless temperature measurement device for power grid construction is an important strategic deployment in China's energy sector and a development direction for the power industry. Substation cables and joints are important daily monitoring objects for system operation, and their operating temperature is an important external representation of equipment operation status (accurate judgment of equipment working status can be made based on operating temperature, relative temperature rise, and other information), and can also provide important data basis for achieving condition based maintenance. There are three ways to implement online temperature measurement technology recently: distributed fiber optic temperature measurement, laying temperature measurement optical cables along the cable, and detecting the temperature of the entire cable area through the intensity of light scattering signals; Point bus temperature measurement, temperature sensors are installed along the cable location, and the temperature is transmitted to the background monitoring computer through the data bus to achieve cable temperature monitoring; Wireless temperature measurement powered by point type batteries, with sensors placed at the cable location and wireless data transmission achieved through ZigBee technology. The main disadvantage of one method is that the temperature measuring optical cable is prone to damage when it is manually transported or bitten by animals, and the investment cost is relatively high; The main disadvantage of the two methods is that there is a lot of wiring and the construction is complicated; The main characteristics of the third method are wireless transmission, simple installation, and moderate cost. This method is adopted here.

　　Detailed explanation of wireless temperature measurement configuration scheme

　　1 Product Introduction

　　Function:

　　ARTM Pn wireless temperature measurement device: The ARTM Pn wireless temperature measurement device can be installed separately in high-voltage cabinets and low-voltage drawer cabinets. Each device can receive data from 18 sensors, and sensor models can be selected as ATE100, ATE200, or ATE300. The device is equipped with a 485 interface, which can upload the collected temperature data to the monitoring center.

　　ARTM8 Temperature Inspection Instrument: The ARTM series temperature inspection and control instrument is suitable for measuring and controlling one or multiple temperatures, mainly used for temperature inspection, measurement and control in thermal power plants, hydropower stations and other occasions. Measure the temperature of Pt100 in 8 channels, and any channel can also be shielded. Each channel temperature measurement corresponds to 2 alarm segments, and the relay output can be set to any alarm direction and value.

　　Wireless temperature measurement centralized collection touch screen: The wireless temperature measurement touch screen can be embedded and installed in high-voltage cabinets and low-voltage drawer cabinets. Each device can receive data from 240 sensors and can be optionally used with ATE100, ATE200, and ATE300 sensors. The device is equipped with a 485 interface and an optional Ethernet port, which can upload the collected temperature data to the monitoring center.

　　Application scope:

　　Suitable for temperature monitoring of cable joints, circuit breaker contacts, knife switch switches, high-voltage cable intermediate heads, dry-type transformers, low-voltage high current equipment, etc. inside high and low voltage switchgear.

　　Ordering Example:

　　Technical requirements: Passive wireless temperature measurement with 6-point circuit breaker contacts and 3-point busbar in one high-voltage cabinet

　　Auxiliary power supply: AC/DC 220V

　　Display mode: standalone wireless temperature display

　　In summary, the confirmed model is: wireless temperature measurement device: ARTM-P9-300, 1 unit; Wireless temperature sensor: ATE300, 9 pieces

　　Technical requirements: Wireless temperature measurement for 6-point circuit breaker contacts and 3-point busbar in 10 high-voltage cabinets

　　Wireless sensor requirements: battery powered, wireless

　　Display mode: centralized wireless temperature display

　　In summary, the confirmed model is: Wireless temperature measurement centralized touch screen: AARTM-7062HT-4 (HI), 1 unit; Wireless temperature sensors: ATE200,90 pieces; Wireless temperature measurement transceiver: ATC200,10

　　Technical requirements: Wireless temperature measurement for 6-point circuit breaker contacts and 3-point busbar in 10 high-voltage cabinets

　　Wireless sensor requirements: Passive wireless

　　Display mode: centralized wireless temperature display

　　In summary, the confirmed model is: wireless temperature measurement centralized touch screen: ARTM-7062HT-4 (HI), 1 unit; Wireless temperature sensors: ATE300, 90 pieces; Wireless temperature measurement transceiver: ATC400, 1 unit; Power module: ARTM-KDYA-DG30-24K, 1 unit.

　　2 Technical parameters

　　3. Configuration of online temperature measurement scheme for electrical wiring points

　　3.1 Configuration scheme for wireless temperature measurement of electrical contacts in high and low voltage cabinets (single cabinet local display)

　　3.2 Configuration scheme for wireless temperature measurement and display function of electrical contacts in high and low voltage cabinets (single cabinet local display)

　　3.3 Wireless temperature measurement configuration scheme for electrical contacts inside high and low voltage cabinets (no need for on-site display)

　　a. Centralized (ATC450-C)

　　Description: The ATC450-C wireless temperature transceiver can connect 60 wireless temperature sensors ATE100/100M/200/400 and receive temperature signals from multiple wireless temperature sensors inside the cabinet.

　　a. 2 Centralized (ATC600)

　　Description: The ATC600 wireless temperature transceiver can connect to 240 wireless temperature sensors ATE100/100M/200/400, receive temperature signals from multiple cabinets, and has transparent transmission function.

　　3.4 Wireless temperature measurement of electrical contacts inside high and low voltage cabinets (centralized on-site display)

　　a. Touch screen paired with ATC450-C

　　Description: The touch screen is connected to four ATC450-C through RS485 interface to achieve centralized display of switch cabinet temperature. One ATC450-C can receive 60 wireless temperature sensors ATE100/100M/200/400.

　　b. Touch screen paired with ATC600

　　Description: The touch screen is connected to an ATC600 through an RS485 interface to achieve centralized temperature display in the switchgear. Each ATC600 can receive 240 wireless temperature sensors ATE100/100M/200/400.

　　3.5 Centralized monitoring of distribution room

　　a. Acrel-2000T/A paired with ATC450-C

　　Explanation: Acrel-2000T/A is connected to four ATC450-C through RS485 interface to achieve centralized temperature display in the switchgear. Each ATC450-C can receive 60 wireless temperature sensors ATE100/100M/200/400.

　　b. Acrel-2000T/A paired with ATC600

　　Explanation: Acrel-2000T/A is connected to an ATC600 via RS485 interface to achieve centralized temperature display in the switchgear. Each ATC600 can receive 240 wireless temperature sensors ATE100/100M/200/400.

　　c. Acrel-2000T/B distribution room centralized monitoring

　　Explanation: Acrel-2000T/B can not only connect multiple ATC transceivers through RS485 to receive all types of sensors for centralized display, but also communicate with wireless temperature measurement related local display devices in the distribution room for centralized display. At the same time, it can also connect to intelligent control, microcomputer protection, power instruments and other power monitoring equipment in the distribution room for monitoring.

　　3.6 Low voltage electrical contact wired temperature measurement and transformer winding temperature measurement configuration scheme ARTM-8 Pt100

　　Explanation: The ARTM-8 temperature inspection instrument can be equipped with 8 Pt100 sensors, wired connections. The Pt100 sensors are provided by the customer. When measuring low-voltage electrical contacts, the Pt100 sensors need to be insulated.

　　4 Wireless Temperature Measurement System Solutions

　　The Acrel-2000/T wireless temperature measurement system can access temperature data from all temperature measurement devices at the user station's equipment layer. Using computer technology, modern electronic technology, communication technology, and signal processing technology, the temperature data from the connected temperature measurement devices is read, analyzed, and processed, and displayed on the computer to monitor all temperature nodes in the entire station. The system has an independent database that can record data, query data, query curves, query reports, and has functions such as high temperature, over temperature limit alarm, and alarm time query. The online temperature monitoring of wireless temperature measurement systems can enhance equipment safety, timely, continuously, and accurately reflect the operating status of equipment, avoid safety accidents, and reduce equipment accident rates. User stations do not require regular inspections, reducing manpower and material resources, and achieving automated management.

　　The system networking diagram is as follows: Ankerui passive wireless temperature sensor

　　The ATE400 switchgear wireless temperature measurement device addresses the issue of heating faults caused by surface oxidation corrosion, loose fastening bolts, and increased contact resistance at the contact points of circuit breakers, isolating switches, and other conductive busbar connections in 10 kV switchgear substations during long-term operation. A passive wireless online temperature measurement system based on surface acoustic wave technology has been proposed and developed for key point temperature measurement in 10 kV switchgear substations. The system achieves unified collection and transmission of temperature measurement information through the existing substation comprehensive data network, with functions such as remote intelligent analysis and diagnosis, real-time and historical data report statistics, web browsing and publishing, and SMS alarms. It has been successfully applied to the 110kV Taifeng Substation, Wen'an Substation, and Yufeng Substation of Zhongshan Power Supply Bureau, monitoring the real-time heating situation of 10kV switchgear equipment, realizing centralized management of temperature measurement data in each substation, and providing reliable data support for the status maintenance and timely defect elimination of 10kV switchgear equipment.

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