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Experience Reliable Operations with Power Quality

Experience Reliable Operations with Power Quality



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The concept that maintaining high power quality can lead to more reliable operations in an electrical system. Power quality is defined by how well the voltage, current, and frequency of the electrical supply conform to standards. Poor power quality can negatively impact the performance, reliability, and lifespan of electrical assets, leading to issues like interruptions, sags, swells, transients, harmonics, noise, and flicker. By ensuring high power quality, businesses can prevent these issues, leading to smoother, more efficient, and more reliable operations. This is particularly important in condition-based maintenance, where power quality can help identify potential issues before they become major problems, thereby minimizing downtime and maximizing productivity.


Poor power quality can be caused by a variety of factors. Here are some common causes:


1. Voltage sags or dips: These can reduce the efficiency and performance of equipment¹. They are often caused by the starting of large loads, especially large inductive ones.

2. Harmonic pollution: This can cause additional stress and losses on the networks and systems. Harmonic distortion issues and voltage and current anomalies represent the areas where common problems in power quality occur.

3. Excessive reactive power: This can increase the apparent power and reduce the power factor.

4. Lightning, switching of lines or capacitors, disconnection of heavy loads: These can cause surges, spikes, or transients that can damage components and insulation materials.

5. Faults at power stations, extreme weather conditions, damage to the electric transmission lines, substations, or other parts of the distribution system: These can lead to poor power quality.

6. Short circuit, or the overloading of the mains supply: This is also a common cause.


Maintaining high power quality is crucial for the smooth and efficient operation of electrical systems. It's important to identify and address these issues to prevent potential damage and inefficiencies.


To address poor power quality, you can take the following steps:


1. Use infrared thermography to locate troubled areas.

2. Conduct a power quality inspection and survey using a properly trained and experienced power quality contractor.

3. Perform a power quality study if an expansion is planned or a large load is being added.

4. Determine the root cause of the bad power factor. When dealing with inductive current, adding power factor correction capacitors to your facility’s power distribution system is one common solution.

5. Have a clear goal for the power quality strategy.

6. Select the correct meters to capture data and events.

7. Use the right software to visualize and carry out analysis.


Remember, the keys to avoiding the pitfalls of Power Quality disruptions are identification and prevention. This involves engaging a reliability specialist to help assess and find the cause of the problem. In some cases, utility power can be at fault, and in others, equipment or system issues can be causing the problem.


To prevent poor power quality, you can take the following steps:


1. Plan for power quality problems and take steps to minimize their impact on your business.

2. Use high-quality electrical equipment, such as motors, transformers, and inverters, which can reduce the occurrence of power quality problems.

3. Improve grounding and bonding of electrical systems to help eliminate ground loops and reduce noise and interference.

4. Have a clear goal for the power quality strategy and resolve specific issues that have been identified.

5. Select the correct meters to capture data and events using state-of-the-art technology for reliable results.

6. Use the right software to visualize and carry out analysis by selecting an expert solutions provider.

7. Perform a power quality study if an expansion is planned or a large load is being added.

8. Determine the root cause of the bad power factor. When dealing with inductive current, adding power factor correction capacitors to your facility’s power distribution system is one common solution.


Remember, the keys to avoiding the pitfalls of Power Quality disruptions are identification and prevention. This involves engaging a reliability specialist to help assess and find the cause of the problem. In some cases, utility power can be at fault, and in others, equipment or system issues can be causing the problem.


How to mitigate power quality issues?


  • Power quality mitigation is the process of improving the quality of the electrical supply by reducing or eliminating disturbances such as voltage sags, harmonics, transients, etc. that can affect the performance and reliability of electrical equipment and systems. Power Quality Issues, Impacts, and Mitigation for Industrial Customers

  • Power quality mitigation techniques include using custom power devices (CPDs) such as distribution static compensator (DSTATCOM), dynamic voltage restorer (DVR), unified power quality conditioner (UPQC), and uninterruptable power supply (UPS) to compensate for the power quality problems. Analysis, monitoring, and mitigation of power quality disturbances in a distributed generation system

  • Power quality mitigation strategies also involve using high-quality electrical equipment, improving grounding and bonding, performing power quality studies, and selecting the correct meters and software for monitoring and analysis. Power Quality in Grid-Connected PV Systems: Impacts.

Summary:

  • Power quality and reliability: The page explains how high-power quality can lead to more reliable operations in an electrical system. It defines power quality as the conformity of the electrical supply to standards. It also lists some common issues caused by poor power quality, such as interruptions, sags, swells, transients, harmonics, noise, and flicker. Power Quality Issues, Impacts, and Mitigation for Industrial Customers

  • Causes of poor power quality: The page identifies some possible factors that can affect the power quality, such as the starting of large loads, harmonic pollution, excessive reactive power, lightning, switching of lines or capacitors, faults at power stations, extreme weather conditions, damage to the electric transmission lines, substations, or other parts of the distribution system, short circuit, or the overloading of the mains supply. Analysis, monitoring, and mitigation of power quality disturbances in a distributed generation system

  • Mitigation of poor power quality: The page suggests some steps to address and prevent poor power quality, such as using infrared thermography, conducting a power quality inspection and survey, performing a power quality study, determining the root cause of the bad power factor, using custom power devices, selecting the correct meters and software, using high-quality electrical equipment, improving grounding and bonding, and having a clear goal for the power quality strategy. Power Quality in Grid-Connected PV Systems: Impacts, Sources and Mitigation Strategies Power Quality: Problems and Mitigation Techniques Power Quality: Problems and Mitigation Techniques [Book News]

  • Power monitoring solution: The page also advertises a product called TrueWatts, which claims to be a power monitoring solution that can help businesses achieve high power quality and reliability. It provides a link to buy the product and subscribe for more posts. TrueWatts



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