ATE400 switchgear wireless temperature measurement

Description :

　　ARTM series electrical contact online temperature measurement device

　　The ATE400 switchgear wireless temperature measurement switch contact online temperature measurement device uses CT saturation power technology to enable the temperature acquisition part to work normally without the need for batteries. The temperature display part can display the temperature values of the upper and lower contacts of phases A, B, and C, as well as the ambient temperature. It also has an overtemperature warning. If the set temperature upper limit is exceeded, an overtemperature warning will be issued to prompt relevant personnel to carry out maintenance or take other corresponding measures to eliminate the problem in its infancy. In practical use, the temperature acquisition end of the switchgear switch contact online temperature measurement device does not require external power supply. Therefore, the switchgear switch contact online temperature measurement device can also be applied to online temperature detection of high-voltage line switches inside and outside the house, in order to prevent temperature rise faults of high-voltage switches. It has very important significance.

　　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 temperature monitoring methods for ATE400 switchgear wireless temperature measurement substation 10 kV switchgear equipment mostly use three main methods: temperature wax monitoring, handheld infrared temperature measurement, and active sensor wireless temperature measurement. However, the above methods have problems such as inability to monitor in real time, large measurement errors, and easy probe failure. It is necessary to develop passive wireless temperature measurement technology for sensors to overcome the shortcomings of previous temperature measurement methods, achieve real-time online temperature monitoring, diagnosis, warning and other functions for key parts of switchgear, and meet the requirements of accurate temperature measurement, long-term operation of sensors without maintenance during the working life cycle, and replacement of receiving devices without power outage.

　　This article proposes and develops a passive wireless online temperature measurement system, which achieves passive wireless temperature online monitoring of the heating situation inside the 10 kV switchgear, improves the reliability of equipment operation, and achieves the following technical goals:

　　a) By utilizing the thermal sensitivity, inverse piezoelectric effect, and piezoelectric effect of surface acoustic wave devices, a passive wireless sensing device is developed. Through electromagnetic compatibility design and coding design, it is applied to online temperature monitoring of 10 kV switchgear.

　　b) Utilize the existing substation comprehensive data network and adopt a unified communication standard to ensure data security and reliable communication.

　　c) Establish an intelligent monitoring platform to integrate temperature monitoring systems from multiple substations under the power supply bureau on the same platform, achieving centralized management of temperature measurement data.

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