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The Function and Working Principle of Power Protector

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.06.01
A power protector is a device used to protect power equipment in the power system. Its main function is to monitor and control the power supply to ensure the safe operation of the power system. In modern society, electricity is the foundation for the normal operation of various equipment and systems, and there are various faults and abnormal situations in the power system. The power protector monitors the power status in real-time, detects faults and abnormalities, and takes corresponding protective measures to ensure stable power supply of the power system. This article will introduce the definition, functional functions, and detailed explanation of the principle and working mode of power protectors.


Power surge protector

1. What is a power protector？

A power protector is a device specifically designed to protect power equipment in a power system. It mainly monitors the voltage, current, frequency and other parameters of the power supply in real-time, and monitors and controls the power supply according to preset protection logic and strategies. When the power supply fails, malfunctions, or exceeds the set range, the power protector will take timely protective measures, such as cutting off the power supply, reducing output power, etc., to avoid the expansion of the fault and protect the safety of other equipment and loads in the power system.

2. The Function of Power Protector

2.1 Monitoring power supply status

The power protector can monitor various parameters of the power supply in real time, including voltage, current, frequency, power factor, etc. By monitoring the power supply status, it is possible to promptly detect whether the power supply is working properly, in order to take corresponding measures for adjustment or repair.

2.2 Detection of faults and anomalies

The power protector has the functions of fault detection and anomaly detection. When there is a malfunction or abnormal situation in the power supply equipment, such as short circuit, overload, undervoltage, overvoltage, etc., the power protector can detect it in a timely manner and provide corresponding alarms and protection signals.

2.3 Protecting the safety of the power system

After detecting a power failure or abnormality, the power protector will take corresponding protection measures based on the preset protection logic and strategy. These protective measures can include cutting off power, reducing output power, automatically switching backup power, etc., to avoid the escalation of faults and protect the safety of other equipment and loads in the power system.

3. Principle and working mode of power protector

3.1 Principle of Power Protector

Power protectors are mainly based on circuit principles and protection theories in power system engineering. It monitors power parameters in real-time through the use of sensors, measuring instruments, and controllers, and makes judgments and controls based on preset logic and strategies.

3.2 Working mode of power protector

Power protectors are usually divided into two working modes: monitoring mode and protection mode.

In monitoring mode, the power protector continuously obtains various parameter data from the power supply and analyzes and processes it. If the power supply is found to be working abnormally or exceeding the set range, the power protector will enter protection mode.

In protection mode, the power protector takes corresponding protection measures based on the preset protection logic and strategy. These measures can include cutting off power, reducing output power, issuing alarm signals, etc. At the same time, the power protector will also record and store fault information for subsequent analysis and processing.

Power protectors typically use intelligent controllers such as microprocessors or digital signal processors to achieve monitoring and control functions. Sensors and measuring instruments are responsible for real-time collection of power supply parameter data and transmitting it to the controller for processing. According to the preset protection logic and strategy, the controller will judge the power status and take corresponding protection measures as needed.

In addition, the power protector can also communicate with other devices and systems to achieve remote monitoring and management. By connecting to the upper computer or monitoring system, the power protector can transmit real-time data, fault information, etc. to the operator for timely repair and maintenance.

A power protector is an important device used to protect power equipment in the power system. It ensures the safe operation of the power system by monitoring the power supply status, detecting faults and anomalies, and taking corresponding protective measures. The working principle of a power protector is based on circuit principles and protection theory, utilizing sensors, measuring instruments, and controllers to achieve real-time monitoring and control functions. Its working mode includes monitoring mode and protection mode, which are judged and controlled through intelligent controllers. By communicating with other devices and systems, power protectors can achieve remote monitoring and management, improving operational efficiency.
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