Online monitoring device for power quality of 110Kv and below power supply system

The APView500, an online monitoring device for power quality of 110Kv and below power supply systems, adopts digital signal processing technology and has high precision and stability. Through it, users can monitor and analyze power quality data in real time, grasp the operation of the power system, and take corresponding measures to ensure stable power supply.

Sudden shutdowns of industrial production lines, drift and distortion of precision instrument data, and flicker faults in commercial building lighting... Behind these seemingly asymptomatic electricity problems, there is often an easily overlooked "invisible killer" - energy disturbance.

Power quality issues such as voltage fluctuations, harmonic distortion, three-phase imbalance, and temporary drops and rises are not as visible as equipment failures, but they can erode the production efficiency, equipment lifespan, and electrical safety of enterprises over time. In fields such as intelligent manufacturing, data centers, and healthcare that require strict reliability of electricity, the losses caused by power disturbances are even more alarming.

1. What is power quality

Power quality refers to the quality of electrical energy in the power system. The ideal electrical energy should be a symmetrical sine wave with a complete waveform of electrical parameters. Some factors can cause the waveform to deviate from the symmetrical sine, resulting in power quality issues. On the one hand, we study which influencing factors can lead to power quality problems, and on the other hand, we investigate which aspects of problems these factors can cause,*Afterwards, we need to study how to eliminate these problems, in order to*To a large extent, make the electrical parameter waveform approach a sine wave.

2.Common issues in power quality

（1）Reduce the efficiency of the power grid, transmission, and electrical equipment usage；

（2）Zero wire overheating；

（3）Electrical equipment heats up and accelerates aging, thereby reducing the service life of the equipment；

（4）Causing damage to electrical equipment, severe resonance can also lead to tripping accidents；

（5）Inaccurate measurement of electrical measuring instruments；

（6）The user's absorption of the total power of the power grid increases, resulting in the occupation of the capacity of the power supply transformer.

3. Ankerui Power Quality Monitoring and Management System

The power quality monitoring and governance system platform mainly consists of four parts: power quality governance equipment, physical gateway, server, and service terminal. The power quality governance equipment serves as the foundation to achieve data collection and power quality compensation. The physical gateway realizes data transmission between devices and servers and allocates strategic functions to devices. The data is transmitted through servers*Ultimately, providing visual displays to users through service terminals as a medium.

The power quality monitoring and governance system not only serves as a local terminal to provide users with functions such as power quality monitoring, governance, and equipment operation and maintenance, but also can provide remote online services to users by accessing the AcreIEMS enterprise microgrid energy efficiency management platform.

4. The necessity of deploying a power quality monitoring and governance system

（1）Guarding core equipment to avoid huge losses caused by unplanned downtime

For industries such as industrial manufacturing, semiconductors, and automotive parts processing, unplanned downtime of a production line means the loss of tens of thousands of yuan in output value per minute, and may also trigger chain reactions such as product scrapping and order defaults. And electrical disturbance is one of the main culprits causing equipment strikes.

Harmonics can cause additional heating of equipment such as motors and transformers, accelerate the aging of insulation layers, and significantly increase the failure rate; A temporary voltage drop can cause the PLC control system and servo motor to instantly "lose power", and the cutting tools and molds of precision machining equipment can be damaged or directly scrapped.

The Ankrui power quality monitoring device can collect more than 200 power quality parameters such as voltage, current and harmonics in real time. Once the disturbance exceeds the standard, the system will immediately send an early warning signal and quickly locate the disturbance source through the edge computing gateway. Paired with active power filters (APF), static var generators (SVG) and other treatment equipment, it can achieve rapid filtering of harmonics and dynamic compensation of reactive power, effectively preventing equipment shutdown caused by power disturbances and ensuring production continuity.

（2）Improve energy utilization efficiency and reduce electricity costs for enterprises

High electricity bills are a common pain point for many companies, but few people realize that power quality issues are the "invisible driving force" that raises electricity bills.

Three phase imbalance can lead to increased line losses and decreased transformer output; Exceeding the standard of reactive power will result in a penalty of electricity fees charged by the power grid company; Harmonic currents will occupy the capacity of the power grid, causing ineffective loss of electrical energy.

Ankerui's power quality monitoring and governance system accurately identifies key nodes of power loss through intelligent analysis modules, providing customized governance solutions for enterprises. Active power filters can control the harmonic distortion rate within 5%, while static reactive power generators can compensate for reactive power in real time, stabilizing the power factor above 0.95. This not only avoids fines but also reduces losses in lines and equipment.

（3）Meet industry compliance requirements and help enterprises achieve high-quality development

The Ankerui power quality monitoring and governance system complies with national standards such as GB/T14549-1993 "Harmonics in Public Power Grids for Power Quality", and can generate power quality reports that meet the requirements of the power grid, helping enterprises pass various compliance inspections smoothly. At the same time, the digital management platform of the system can achieve remote monitoring and operation of multiple sites and devices, making the power quality management work of enterprises more efficient and standardized.

5. Product application

6. Product selection

7.Conclusion

Although electric energy disturbance is' invisible ', its harm is real. Driven by the dual goals of Industry 4.0 and "dual carbon", enterprises are becoming increasingly reliant on electricity, and their requirements for power quality are becoming more stringent.

Ankerui's power quality monitoring and governance system, with a full chain solution of "monitoring analysis governance operation and maintenance", helps enterprises bid farewell to the troubles of power disturbance, safeguard production safety, reduce electricity costs, and further assist enterprises in achieving stable and far-reaching high-quality development.