Ankerui switchgear temperature measurement? product

Description :

　　System Solution

　　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 advanced computer technology, modern electronic technology, communication technology, and signal processing technology, the temperature data from the connected temperature measurement devices can be read, analyzed, processed, and displayed on the computer, enabling monitoring of 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.

　　Wireless temperature measurement product case This project is the off-site power supply and distribution project for the T1 terminal of Nanjing Lukou International Airport. The airport currently has a 10kV switchgear, which was renovated from the original 35kV central substation and constructed in 1996. The main line of the 10kV system operates in sections with a single busbar, and the busbar is equipped with a self switching device. There are 50 10kV side outgoing lines, and the switch cabinet adopts ZCN1 handcart cabinet. The reactive power compensation adopts a semi enclosed complete capacitor compensation device, and the station transformer has a capacity of 200kVA. All 10kV substations are equipped with dual circuit power supply, which is led out from the 10kV I and II busbars of this switching station.

　　The 10kV power supply system of Nanjing Lukou Airport adopts a radial power supply method, with a total of 46 10kV/0.4kV substations set up. Each 10kV substation is an internal substation of the airport, with its main protection, metering, and dispatch centralized in the 10kV switching station and 10kV central substation. The 10kV outgoing circuits of the airport are reorganized according to their functional purposes, with the 110kV substation as one station responsible for supplying power to important loads such as T1 and T2 terminals, and the 10kV switching station as the second station responsible for supplying power to production ancillary facilities. The T1 terminal requires a total of 16 incoming lines. According to the 10kV power supply conditions of the 110kV substation, it is proposed to change the 12 10kV power supply cables of the T1 terminal from the 10kV switchgear to the 110kV substation for power supply. In addition, the transformer power supply for the 2 intermediate frequency power supplies and aircraft air conditioning will be supplied by the newly added 10kV distribution equipment, and the high-voltage refrigeration unit will be provided by this station.

　　Product Requirements

　　For the off-site power supply and distribution project of the T1 terminal of Nanjing Lukou International Airport, wireless temperature measurement products need to be configured. The requirements for this project are as follows:

　　1) Implement 6-point online temperature measurement for the contact wall of the circuit breaker, and it is recommended to set the temperature measuring element on the contact wall side of the circuit breaker to avoid any impact on the external electric field. It is also necessary to complete the factory test verification with the switchgear and circuit breaker as a whole. Ensure safety and reliability during use;

　　2) Perform temperature rise analysis based on real-time operating status such as dynamic load and environment, in order to determine whether the switchgear is operating normally or to issue alarms (non set value alarms);

　　3) The power supply components adopt self powered technology and do not require external power supply;

　　4) After exchanging circuit breakers of the same specifications, temperature rise monitoring of the circuit breakers inside the cabinet can be achieved; The working environment temperature of the sensor meets the requirement of -40 ℃ to+120 ℃.

　　Based on the above requirements, ATE300 CT induction power sensor is selected. In addition, the original plan was to use a 7-inch touch screen ARTM-7062HT-4 (HI) - W wireless temperature measurement centralized on-site display device. Considering cost factors, it was chosen to directly connect the backend system with an ATC400 transceiver. The application of Ankerui wireless temperature measurement products in the off-site power supply and distribution project of the T1 terminal of Nanjing Lukou International Airport is aimed at monitoring the temperature of the electrical connection points of the circuit breaker contacts in the high-voltage switchgear. With the increasingly convenient development of transportation, airport safety is particularly important. To prevent safety issues caused by excessive contact resistance and heating due to oxidation, looseness, dust, and other factors, it is necessary to monitor the temperature online, timely, continuously, and accurately reflect the operating status of equipment, avoid safety accidents, and reduce equipment accident rates.

　　 ARTM series electrical contact online temperature measurement device

　　1 Product Introduction Ankerui Switchgear Temperature Measurement Products

　　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

　　Ordering Example:

　　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

　　Ordering Example:

　　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 External dimensions

　　Background of wireless temperature measurement system construction

　　1.1 Equipment scale

　　The power distribution project of this rolling mill consists of a 10kV switchgear and two substations, 1 # and 2 #, with a total of 21 medium voltage switchgear cabinets. Among them, the medium voltage switch is a mid mounted switchgear for vacuum circuit breakers, using 150VCP-W50 vacuum circuit breakers imported from Eaton in the United States and VD4 vacuum circuit breakers produced by ABB.

　　1.2 Current Status of Equipment Operation and Maintenance

　　In daily operation, 10kV switches have the characteristics of long live operation time, high operating current, and few opportunities for power outage maintenance and repair. Moreover, due to the five prevention design, the switch cabinet door cannot be opened due to locking. It is difficult for operation and maintenance personnel to effectively monitor the temperature of hot parts of the switch cabinet, such as dynamic and static contacts, outgoing busbars, etc., relying solely on temperature measuring guns or infrared imaging devices. From 2013 to 2015, this power distribution project experienced accidents that affected the safety and stability of the distribution room, such as the overheating and tripping of the 1AH6 incoming line switch contacts causing busbar power loss, and the overheating and tripping of the 1AH10 incoming line switch contacts causing busbar power loss.

　　The main reason for the above accidents is the lack of effective online monitoring methods, which makes it difficult to effectively prevent overheating faults. When the switch components heat up, they cannot be dealt with in a timely manner, resulting in switch damage and even non-stop operation of the distribution room. In short, the 10kV switch of this distribution project cannot meet the requirements for safe and stable operation of the distribution room.

　　The necessity of temperature measurement for electrical equipment

　　The development of the power system will move towards high voltage and large capacity, and the increasing transmission capacity of equipment will highlight the problem of temperature rise in electrical equipment that affects the operation of power plants. Equipment temperature is an important parameter that characterizes the normal operation of primary transmission equipment in modern power grids, especially for the breaking points and contact points of primary equipment. The materials of the equipment can generate heat during operation due to environmental pollution, long-term operation, overload operation, contact oxidation, arc impact, and other reasons, causing the temperature to continuously rise and posing hidden dangers to the safe operation of the equipment. The reasons for overheating of power equipment are multifaceted, and monitoring the current alone cannot accurately reflect whether the equipment is overheating, as temperature is a comprehensive reflection of various factors affecting it. The poor electrical contact condition at the conductive connections and plug connections of power equipment is an important cause of high temperature in that area, which can exceed the allowable temperature even under normal current. Therefore, effective monitoring of electrical equipment temperature is essential.

　　Traditional temperature measurement methods such as infrared temperature measurement have problems such as low accuracy, insensitivity to temperature changes, susceptibility to light interference, limited applicability, and manual operation. In addition, infrared waves cannot pass through metals and walls, so they can only monitor the temperature of visible areas on the surface of the equipment, and cannot monitor the internal or dead corners of the equipment. Infrared imagers and infrared temperature guns cannot be used to measure the internal temperature of enclosed medium and high voltage switchgear and other electrical equipment. Fiber optic temperature measurement method can be used to measure the internal temperature of switchgear, but it has the problems of high cost, complex structure, difficult debugging, difficult installation, and the need for an external laser source, making it difficult to promote. And it is afraid of water, not wear-resistant, often breaks, and expensive, so it is rarely used. The temperature measurement patch method cannot open the cabinet door during the operation of high-voltage electrical switchgear, and can only roughly judge the temperature of the hot spot by observing the depth of color change of the temperature measurement patch. For important closed contacts, the temperature cannot be intuitively quantified, and can only be confirmed and judged on site.

　　Ankerui switchgear temperature measurement products

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• Temperature measurement of switchgear? product