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Intelligent video early warning system for preventing external damage of power transmission line
The intelligent video early warning system for preventing external force on the transmission line is scientifically designed on the basis of the video monitoring system of the transmission line. The intelligent video analysis technology is integrated and applied to the system. When an external damage is detected on the scene, the on-site voice alarm is immediately activated. System, and at the same time capture and record on-site photos, and transmit alarm information and on-site pictures to the monitoring center through 3G/4G/OPGW and other networks. The management system of the monitoring center automatically sends the alarm information and pictures to related work through SMS/MMS On personnel’s mobile phones, corresponding measures can be taken immediately to prevent the continuation of destructive behaviors and reduce or even eliminate the impact of accidents caused by external damage.
Equivalent icing thickness monitoring device for transmission line
The equivalent icing thickness monitoring device for transmission lines is a high-tech product integrating new sensing technology, electromagnetic compatibility technology, data processing and signal analysis technology, low-power design technology, and network communication technology.
Transmission line online monitoring system
Collect the current actual operating temperature of the wire (fittings), and collect the environmental meteorological parameters in the microclimate area where the wire temperature measurement point is located, including sunshine, wind speed, wind direction, ambient temperature, humidity, rainfall (optional), air pressure (optional), etc., Obtain the operating current data through the data acquisition and monitoring SCADA system, and complete the time synchronization with the wire temperature data;
Calculate the real-time sag of the wire according to the wire temperature and environmental parameters obtained by the test, monitor the operation status of the transmission line in real time, and pre-alarm in multiple ways when abnormal conditions occur;
Using trend analysis method, through the comprehensive analysis of real-time data and historical data, the expected temperature of various wires, the expected current and load of the wires, the expected time, the expected sag and other parameters are carried out.
气体检测器包括六氟化硫检测单元、氧气检测单元、温湿度测量单元和通信单元，对六氟化硫的检测采用红外检测技术，克服了测量误差大、精度差、稳定性差等缺点；氧气检测单元采用德国进口传感器，测量精度高、性能稳定；温湿度测量部分采用数字输出的温湿度模块，具有精度高、重复性好等特点。综上所述，该气体检测器可实时、在线监测环境中SF6气体浓度、氧气含量以及温湿度的变化，并将检测到的数据通过RS-485总线上传。
Transmission line wire (fitting) temperature monitoring device
Transmission line conductor (fitting) temperature monitoring device is based on the theoretical model of the dynamic capacity increase of the transmission line of the conductor operating temperature, starting from the relationship between the conductor temperature and the current-carrying s of the transmission line, and through the remote real-time measurement of the conductor temperature a, Calculate safety performance indicators such as wire sag and determine the degree of danger under the current conveying capacity. The wire temperature acquisition unit adopts high-energy battery power supply, which solves the problems of difficulty in obtaining power online and low safety level.
SF6+O2 gas detector (JC-DL/1-02)
The gas detector includes a sulfur hexafluoride detection unit, an oxygen detection unit, a temperature measurement unit and a communication unit. The use of ultrasonic detection technology for sulfur hexafluoride detection overcomes the shortcomings of short service life and poor stability; the oxygen detection unit adopts imported sensors , The measurement accuracy is high, the performance is stable; the temperature measurement part adopts the temperature module with digital output, which has the characteristics of high accuracy and good repeatability. In summary, the gas detector can monitor the SF6 gas concentration, oxygen content and temperature changes in the environment in real time and online, and upload the detected data through the RS-485 bus.
The water level sensor uses a high-performance pressure-sensing chip, combined with advanced circuit processing and temperature compensation technology, to convert pressure changes into linear current or voltage signals. The product is small in size and easy to install. It uses a stainless steel shell to isolate and anti-corrosion. It is suitable for measuring media such as gases and fluids that are compatible with the material of the contact part. It can be used to measure gauge pressure, negative pressure and absolute pressure.
The water level sensor is based on the prototype of the universal pressure transmitter and is formed by adding a welded sealed isolation diaphragm structure. Its welded and sealed isolation diaphragm device has a variety of different process connection structures, which is especially suitable for pressure measurement in high temperature, high viscosity, crystalline media and easily clogged occasions, and also suitable for water level measurement in power environment, sanitation, and medical occasions.
Cable tunnel online monitoring system
With the development of economy, the high and low voltage lines of cities, industrial and mining and national defense construction gradually realize cable entry, and cable tunnels have gradually become the main method of urban power supply. However, tunnels are not like overhead lines, which can be carried out on the map with the naked eye. Inspection and fault finding require assistance based on science and technology, and a comprehensive online monitoring system for cable tunnels is indispensable
The cable tunnel online monitoring system is mainly composed of two parts: the front-end device and the back-end monitoring and analysis software. The front-end part monitors the cable body and the tunnel environment through sensors, and transmits the monitoring data to the back-end monitoring and analysis center, so that the relevant department staff can check the tunnel The environment is remotely monitored, and if an abnormality occurs, corresponding maintenance measures can be taken timely and accurately
Electric power remote automatic weather station based on Beidou communication
The Beidou satellite signal covers the whole country and is not affected by geographical or terrain
Low communication cost, monthly cost service is available
The communication channel of the Beidou system has extremely high confidentiality, which adapts to the security requirements of the power system
The weather station is designed as an integrated structure, which is light in weight and small in size, easy to install and disassemble, and can be completed quickly by a single person
Ultra-small integrated high-definition outdoor power facility remote monitoring device
Capable of capturing live high-definition photos according to a preset schedule and transmitting the photos to the monitoring center;
It has the function of setting camera parameter resolution, including 800X600, 1280x720, 1280X1024.1600X1200, 2560X1920 and other resolutions;
It has the function of remotely setting the time interval of picture collection; it has the function of remotely changing the IP and port of the center;
Able to receive query time and time calibration commands in the background of the system, and the 24-hour error of the system is no more than 2 seconds; when the communication is abnormal, the picture can be temporarily stored, and after the communication is restored, it can be automatically uploaded to the background
It has the management and self-test functions of the device's own working status including collection, storage, processing, communication, etc., when it is judged that the device has an operating failure, it can initiate corresponding measures to restore the normal operating state of the device; it has the data function of outputting battery voltage, operating temperature, etc. ;
With WeChat push function (optional);
Comply with State Grid Communication Protocol Q/GDW 242-2010 "General Technical Specification for Transmission Line Condition Monitoring Device", State Grid Encrypted Communication Protocol "Transmission 11 Interface Protocol", JINPOWER Custom Protocol, China Southern Power Grid "Southern Power Grid Transmission Line Status Monitoring Communication Protocol ".
BCS-I Transformer DC Bias Monitoring System
my country's AC/DC hybrid transmission mode has gradually formed, which has also led to the problem of mutual interference between AC and DC systems. When the DC line has a single-maximum loop operation, the DC current flowing into the earth through the grounding pole of the DC system will have an impact on the power transformer in the AC power system. The main manifestation is that the neutral point of the transformer flows through the DC and the core is biased. The DC bias causes the transformer vibration to increase, the noise increases, and the harmonics increase.
JC-OM100 Transformer Oil Chromatography Online Monitoring
The detection sensitivity is high, and the minimum detection limit for dissolved C2H2 in oil can reach 0.1ppm.
Pumpless vacuum degassing technology does not require a vacuum pump, which improves the reliability and stability of the system.
The oil and gas separation is safe and reliable, and does not pollute. The discharge and non-discharge of transformer oil can be selected by the user;
The oil and gas separation speed is fast, only about 15 minutes, and the special environmental adaptation technology is adopted to eliminate the influence of temperature and humidity changes on the gas distribution coefficient;
It can detect H2, CO, CO2, CH4, C2H2, C2H4, C2H6 and more than seven kinds of gas and micro water content in transformer oil, and can upload spectrum, spectrum and other raw data is completely open to users.
Use a dedicated composite chromatographic column to improve the separation of gas components;
Use imported special detector to improve the detection sensitivity of hydrocarbon gas;
High-stability, high-precision gas detection technology, with an error range of ± 10%;
Strong environmental adaptability, successfully applied to high-cold, high-temperature, high-humidity and high-altitude areas;
High anti-interference performance, electromagnetic compatibility performance meets GB/T17626 and IEC61000 standards;
Two-level alarm function is provided, and the alarm signal can be transmitted remotely;
Open database, which can be connected to the local area network of the power system;
Faster analysis cycle, the minimum monitoring cycle is 60 minutes, which can be set by the user, and the recommended detection cycle is 12 hours;
The analyzed oil sample adopts degassing and buffer treatment technology to eliminate the bubbles contained in the oil sample of the re-injected transformer body. Multi-layer isolation re-injection (oil return) technology absolutely guarantees that the carrier gas will not be brought into the transformer body;
The lowest detection limit of C2H2 can reach 0.1-0.5 μ L/L;
The system is equipped with secondary gas threshold alarm and growth rate alarm functions. The alarm concentration and growth rate can be set arbitrarily.
Equipped with an expert system for judging latent faults, the latest oil chromatographic fault diagnosis technology adopts the IEC60599 standard and the improved fuzzy three-ratio method, David's triangle, cubic diagram method and other methods, which users can choose at will.
With historical data trend graph query, report format display and printing functions, it is convenient to compare the monitoring data longitudinally, so as to analyze the transformer operation status and fault development trend.
Support the IEC 61850 communication standard, optical fiber or twisted pair is optional.
The system has a high degree of integration, and the components can be equipped with iron core ground current and ambient temperature and humidity monitoring functions.
It adopts dual-loop multi-mode constant temperature control, with a temperature control accuracy of ± 0.1 ℃, and the equipment is equipped with an automatic constant temperature industrial air conditioner;
The functional interface circuit adopts optocoupler isolation design to further improve the anti-interference performance of the system;
Using Ethernet, it can realize all-digital, remote data transmission, control and parameter setting;
High scalability, can be easily integrated with other monitoring devices;
No cylinder design, no need to replace the carrier gas every year, greatly reducing the amount of after-sales maintenance, and there is no high-voltage container next to the transformer, the equipment safety is fully guaranteed, and there are no safety hazards.
The analysis software has a friendly man-machine interface, an all-Chinese interface, simple operation and rich system functions.
The core device has a standard 19-inch rack structure, compact structure, small size, easy maintenance and screen assembly.
JC-OM400K switchgear local on-line monitoring system
Insulation faults of high-voltage switchgear are mainly manifested as external insulation-to-ground flashover breakdown, internal insulation-to-ground flashover breakdown, phase-to-phase insulation flashover breakdown, lightning overvoltage flashover breakdown, porcelain bushing, capacitor bushing flashover Networking, pollution flashover, flashover, breakdown, explosion, lifting rod flashover, CT flashover, breakdown, explosion, porcelain bottle fracture, etc. Various insulation defects develop to the final breakdown, and they often go through the partial discharge stage before they lead to accidents. The strength of the partial discharge can reflect the insulation status in time. Therefore, the online monitoring of the partial discharge to determine the insulation status is to realize the online monitoring of the switchgear insulation. And effective means of diagnosis.
MOA current monitor (JC-OM200/A)
The arrester monitoring device is mainly used for real-time and online monitoring of the full current, discharge current and cumulative action times of MOA arresters.
The arrester monitoring device adopts a current sampling method with no residual voltage and full isolation, which is mainly composed of a current transformer, A/D conversion, single-chip microcomputer and RS485 communication module. The current transformer uses a single-turn primary core-through current transformer, and the measurement result is used on a bus To transfer. The arrester monitoring device adopts advanced compensation technology, so it has good versatility and interchangeable measurement.
Ground resistance detection sensor
The ETCR5500 series ground resistance detection sensor breaks through the traditional detection method and adopts clamp-type non-contact measurement. It is widely used in the ground resistance measurement of electric power, telecommunications, meteorology, oil fields, construction and industrial electrical equipment. Magnetic shielding technology and CT technology can ensure high precision, high reliability, and high stability for year-round uninterrupted testing.
The ETCR5500 series is divided into a clamp-shaped open-loop structure and a closed-loop structure, as well as a long jaw and a round jaw. The long jaw is particularly suitable for flat steel grounding occasions and can meet the detection of various grounding systems. For the grounding system that forms a loop, there is no need to disconnect the grounding down conductor, and no auxiliary electrode is needed, which is safe and time-saving.
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