The superiority of intelligent control devices for high-voltage switchgear
2.1 Advantages of Displaying Actual J=Operation Status
The primary wiring diagram of the high-voltage switchgear is displayed using dynamic modules. Real time dynamic simulation display is formed by graphic symbols of circuit breakers, isolation cars, busbars, current transformers, voltage transformers, and grounding switches. This dynamic simulation wiring diagram can dynamically display the opening/closing of circuit breakers, opening/closing of grounding switches, energy storage status, working/testing position of cars, and dynamic anti false flashing prompts of circuit breakers and grounding switches during the process. The on duty personnel can intuitively and accurately know the current status of the main circuit of the high-voltage switchgear, thereby obtaining more intuitive, rich, and accurate status information.
2.2 Advantages in temperature and humidity control
Temperature and humidity control is achieved through the use of temperature and humidity sensors. The signal is amplified and logically compared before outputting a heating control signal to start/stop the heater. It also has a heating circuit fault detection function and can set alarm limits. When the temperature exceeds the alarm limit, the alarm will sound and can be associated with the LED indicator light and the switch output of the terminal. It can detect the temperature of electrical contacts such as contact points and cable joints online, with a range of OaC to 125 ℃ and an accuracy of ± 1 ℃. Duty personnel do not need to conduct regular inspections every day to check for condensation and take relevant measures, nor do they need to regularly inspect equipment using infrared thermal imagers, thermometers, temperature indicators, and other means. This device achieves real-time monitoring, improves the reliability of power supply, and reduces the workload of on duty personnel.
2.3 Advantages in electrical testing
Using LED high-voltage live display, its starting voltage fkVI=rated phase voltage x (0.15-0.65). It is used for electromagnetic lock start control (kVl=rated phase voltage J x0.65 or less). When phase i is not live at the same time, the lock release light will light up and the electromagnetic lock will be activated. This makes up for the shortcomings of the traditional live display device in high-voltage switchgear. It can achieve the function of power verification, and has high reliability, long service life, maintenance free, and clear and eye-catching display, which can effectively prevent accidents caused by misoperation.
2.4 Superiority in handling
You can directly perform circuit breaker opening/closing, electric vehicle entry and exit, energy storage, remote/local, and lighting operations from the device, without the need to install switch operations on the switchgear cabinet door
2.5 Human body sensing and voice prompt function
When someone stays in front of the high-voltage switchgear, the lighting inside the cabinet will automatically start, and the LCD screen will light up and use voice prompts to indicate that the cabinet has been powered on/off. After the person leaves, it automatically stops. Voice error prevention prompts the logical relationship between switch values and related operating procedures, accurately judge the corresponding position and switch status of the car, and make correct pre judgments for upcoming erroneous operations, providing timely correction voice prompts and corresponding flashing lights to prevent the execution of erroneous operations. When the circuit breaker is in the closed state and the operator mistakenly pushes the car from the test position to the working position or pulls it from the working position to the test position, the voice prompt "Please disconnect the circuit breaker": When the grounding switch is in the closed state and the car is mistakenly pushed from the test position to the working position, the voice prompt "Please disconnect the grounding switch", etc.
2.6 Energy measurement function
It has the function of measuring comprehensive electrical parameters, with an accuracy of 0.5 level. The parameters can include three-phase current, three-phase voltage, split phase active power, combined phase active power, split phase reactive power, combined phase reactive power, split phase power factor, combined phase power factor, complex rate measurement, active/reactive energy, high-order harmonic quantity, and other data.
2.7 Communication function
It can be equipped with an RS485 communication interface to achieve remote automated management.
2.8 Simplified the panel structure design of high-voltage switchgear
2.8.1 Control panel form of traditional high-voltage switchgear.
2.8.2 Control panel form for high-voltage switchgear with intelligent control device.