ATE400 passive temperature measurement?

Description :

　　ARTM series electrical contact online temperature measurement device

　　Overall scheme of ATE400 passive temperature measurement online temperature measurement system

　　To meet the on-site requirements of the substation, the online temperature measurement system of the high-voltage switchgear must meet the following requirements:

　　(1) Sensors should be able to record, display, historical query, and alarm temperature signals, and the system's capacity should exceed the number of measurement points; In order to avoid insulation faults during the monitoring process, it is required to be inherently passive and have no electrical signals.

　　(2) The system's relevant indicators meet the environmental requirements of the substation, achieving the goals of voltage resistance, electromagnetic interference prevention, moisture resistance, and dust prevention.

　　(3) Each sensor can be connected to the upper computer in the control room through an optical path and send the measured temperature parameters to the upper computer.

　　In summary, the bottom layer of the online temperature measurement system for high-voltage switchgear is the temperature sensor. The calibrated fiber optic grating temperature sensor is installed at the fault prone point and connected to the coupler. The fiber optic grating sensor is connected to multiple channels and connected to the host through a multi-channel switch to transmit temperature data in a timely manner.

　　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

　　During long-term operation of the ATE400 passive temperature measurement substation's 10 kV switchgear, the contact parts of the isolation switch contacts, switch contacts, conductive busbar connections, and cable head connections can easily cause an increase in contact resistance due to surface oxidation corrosion, loose fastening bolts, and other reasons, leading to heating and electrical corrosion of the contact parts. In severe cases, it can melt the connecting components and cause short circuit faults, resulting in widespread power outages, reduced system power supply reliability, and significant economic losses. Preventing heating faults in 10 kV switchgear is an important issue that the substation operation department needs to face in the long term. Clear regulations: prevent overheating of the current carrying circuit of switchgear; Regularly use temperature measuring equipment to inspect the joint parts of switchgear and the conductive parts of isolating switches (such as contacts, outlet sockets, etc.), especially during heavy loads or high temperatures, strengthen monitoring of the temperature rise of operating equipment, and take timely measures if problems are found.

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