Power meter PM800 monitors the value of the power factor

Oct 13, 2025 by wbrum.org 73 views

Introduction

PT. Sinar Alam Permai Palembang, a company with a vast array of electrical equipment, requires an effective system to control and detect early damage to the bank capacitor. Damage to bank capacitors can lead to a decrease in energy efficiency and potentially cause danger. To address this issue, researchers designed an automatic control system that integrates the Human Machine Interface (HMI) with the Programmable Logic Controller (PLC) based on the GE Series 90-30, Moxamgate, and CE Digital Transducer.

Background

The bank capacitor plays a crucial role in maintaining the stability and efficiency of the electrical system. However, damage to the bank capacitor can lead to a decrease in energy efficiency and potentially cause danger. The early detection of damage to the bank capacitor is essential to prevent fatal damage, reduce repair and downtime costs, and increase the reliability of the system.

System Design

The designed system utilizes the PLC GE Series 90-30, Moxamgate, and CE Digital Transducer to monitor the value of power factors in real-time. The HMI acts as a user-friendly interface that displays data on the condition of bank capacitors visually. The system is designed to automatically turn on the bank capacitor when the power factor value drops below 0.95 and kill it when the power value factor reaches 1.

System Advantages

The designed system offers several advantages, including:

Automatic control: The system is able to automatically control bank capacitors based on the power factor value, thus maintaining energy stability and efficiency.
Early detection of damage: The system can detect early damage to the bank capacitor through the current monitoring of each capacitor. This data is displayed at HMI so as to facilitate the identification of the problem.
Real-time monitoring: HMI Displays real-time data regarding the condition of the bank capacitor, including the value of the power factor, the current of each capacitor, and the work status.
Preventive Maintenance: The system helps in conducting preventive maintenance regularly by providing accurate data about the condition of the bank capacitor.

How the System Works

The system works as follows:

Power meter PM800 monitors the value of the power factor: The power meter PM800 monitors the value of the power factor and sends the data to the GE series PLC 90-30 via Moxamgate.
Data Power Factor is sent to the GE series PLC 90-30: The data power factor is sent to the GE series PLC 90-30 via Moxamgate.
PLC processes data and runs a control program based on the power factor value: The PLC processes the data and runs a control program based on the power factor value.
If the power value is factor ≤ 0.95, PLC turns on the bank capacitor and displays the alarm on HMI: If the power value is factor ≤ 0.95, the PLC turns on the bank capacitor and displays the alarm on HMI.
If the power value factor is ≥ 1, the PLC turns off the bank capacitor: If the power value factor is ≥ 1, the PLC turns off the bank capacitor.
CE Digital Transducer sends current data capacitors to PLC: The CE Digital Transducer sends current data capacitors to PLC.
Current data is displayed at HMI, allowing the identification of early damage to the capacitor: The current data is displayed at HMI, allowing the identification of early damage to the capacitor.

System Benefits

The designed system offers several benefits, including:

Increasing energy efficiency: The system maintains the power value to remain optimal, thus minimizing energy loss.
Damage Prevention: The early detection system helps prevent fatal damage to bank capacitors, reduce repair and downtime costs.
Increasing safety: The early detection of damage helps prevent potential hazards that can be caused by damaged bank capacitors.
Increased system reliability: The integrated system increases the reliability and stability of the electricity system.
Better decision making: Accurate and real-time data displayed at HMI helps the maintenance team in more appropriate decision making.

Conclusion

The designed PLC and HMI-based automatic control system has proven effective in controlling and detecting early damage to bank capacitors at PT. Sinar Alam Permai Palembang. This system is able to increase energy efficiency, increase the reliability of the system, and help the maintenance team in conducting preventive maintenance regularly. This proves that PLC and HMI technology has an important role in optimizing the electricity system and securing company assets.

Q: What is the purpose of the designed system?

A: The purpose of the designed system is to control and detect early damage to bank capacitors at PT. Sinar Alam Permai Palembang, thereby maintaining energy stability and efficiency, and preventing potential hazards.

Q: How does the system work?

A: The system works by monitoring the value of power factors in real-time using the PLC GE Series 90-30, Moxamgate, and CE Digital Transducer. The HMI displays data on the condition of bank capacitors visually, and the system automatically turns on the bank capacitor when the power factor value drops below 0.95 and kills it when the power value factor reaches 1.

Q: What are the advantages of the designed system?

A: The designed system offers several advantages, including automatic control, early detection of damage, real-time monitoring, and preventive maintenance.

Q: How does the system detect early damage to the bank capacitor?

A: The system detects early damage to the bank capacitor through the current monitoring of each capacitor. The current data is displayed at HMI, allowing the identification of early damage to the capacitor.

Q: What are the benefits of the designed system?

A: The designed system offers several benefits, including increasing energy efficiency, damage prevention, increasing safety, increased system reliability, and better decision making.

Q: Can the system be integrated with other systems?

A: Yes, the system can be integrated with other systems, such as SCADA (Supervisory Control and Data Acquisition) systems, to provide a more comprehensive and efficient control and monitoring system.

Q: How can the system be maintained and updated?

A: The system can be maintained and updated by regularly checking and replacing the PLC, HMI, and other components, as well as updating the software and firmware to ensure optimal performance.

Q: What are the potential risks and challenges associated with the designed system?

A: The potential risks and challenges associated with the designed system include hardware and software failures, data loss, and cybersecurity threats. However, these risks can be mitigated by implementing regular maintenance and updates, using secure communication protocols, and implementing backup systems.

Q: Can the system be used in other industries?

A: Yes, the system can be used in other industries, such as power generation, transmission, and distribution, as well as in other applications where bank capacitors are used.

Q: How can the system be customized to meet specific requirements?

A: The system can be customized to meet specific requirements by modifying the PLC program, HMI display, and other components to suit the specific needs of the application.

Q: What is the cost of the designed system?

A: The cost of the designed system will depend on the specific components and configuration used, as well as the installation and maintenance costs. However, the system is expected to provide significant benefits and cost savings in the long run.

Q: How can the system be integrated with other systems and devices?

A: The system can be integrated with other systems and devices using standard communication protocols, such as Modbus, Ethernet, and RS-485, to provide a more comprehensive and efficient control and monitoring system.

Q: What are the future developments and improvements of the designed system?

A: The future developments and improvements of the designed system include the integration of advanced technologies, such as artificial intelligence and machine learning, to provide more accurate and efficient control and monitoring of the bank capacitors.