When selecting a power quality analyzer, consider the key features that align with your monitoring needs. Look for devices that offer high accuracy and resolution to detect even the smallest power quality issues. The ability to record and analyze data over time is also vital for identifying intermittent problems. Ensure the analyzer has sufficient memory capacity and a user-friendly interface for data retrieval and analysis. Additionally, check for compatibility with the types of electrical systems you'll be testing, as some analyzers are better suited for industrial environments, while others are designed for commercial or residential use.
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Steady, high-quality power supply is not only about availability, but also about power quality. However, identifying the root causes of power quality issuesranging from harmonic distortions and voltage fluctuations to the effects of lightning strikes and equipment failurescan be a complex challenge. These disturbances, often invisible to the naked eye, can lead to equipment malfunctions, operational downtime, and even safety hazards. Conducting a thorough power quality survey is the first step towards analyzing and mitigating these issues, thereby enhancing the overall performance of electrical systems.
This article provides useful tips and gists for conducting power quality surveys and analysis and identifying power quality problems. Whether you are a facility manager, an electrical engineer, or simply interested in electrical system optimization, these guidelines will serve as an essential tool in your efforts to ensure a stable and high-quality power supply.
Before diving into the measurements for a power quality survey, gathering detailed information about the site is essential. This foundational knowledge allows for a more accurate assessment and identification of potential improvement areas.
The following information must be collected.
This comprehensive approach to pre-survey preparation ensures a thorough and effective power quality analysis, setting the stage for actionable insights and improvements.
Finding the root cause of power quality problems can be difficult. The following few tips can help with power quality measurements. Here are 4 tips to help you measure power quality.
Understanding is the key to resolving troubleshooting caused by power quality problems. First, we need to know what type of trouble is occurring. A tip is to look for heat or unusual noises coming from the equipment.
Next, it is necessary to know when the trouble occurred. Is it cyclical or intermittent? It is better if specific dates and times are known. If an event is recorded, the trouble could be caused by equipment that is running or restarting at that time of day. Knowing exactly what time the event occurred and when the trouble subsided will make it easier to determine which equipment or location caused the trouble.
The next step is to identify the measurement location. For example, if measurements are taken at a receptacle point, the trends in voltage and current may provide useful information. If both voltage and current are falling, the cause can be traced to outside the building. If the voltage is falling, it can be assumed that a short circuit or inrush current caused the problem inside the building. Simultaneous measurements at a number of locations can help identify the cause of the problem.
Finally, once the measurements have been completed, the root cause of the problem can be deduced. Sort power quality events by specific dates and times, and cross-reference them with site information such as equipment schedules and any recent changes in equipment (additions or removals). This approach can offer valuable clues to pinpoint the cause of issues.
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To measure power quality, a specialized power quality analyzer is used. Hioki offers two types of analyzers: the advanced type PQ and the standard type PQ. Table 1 gives an overview of the two types.
Table 1: Overview of power quality analyzers
Product modelPQPQMeasuring instruments are only for recording data, while software is needed for analysis. Let me remind you that both are important. The data acquired by Hioki's power quality analyzer can be analysed using software called PQ ONE.
Here are some useful features of PQ ONE in this area:
1.
Event statistics2.
Event list3.
Trend graphs and event details4.
EN determination function2. Event list
This feature allows you to view all captured events or filter them by specific occurrences, making it simpler to identify power anomalies based on duration and severity.
PQ One software also offers a convenient way to generate reports automatically with just a few clicks.
By clearly understanding what the true problem is, when and where it occurs, and the causes of those problems, you can take action to mitigate them and improve the power quality on your site. With Hiokis power quality analyzer, you can diagnose even difficult-to-detect problems in power quality.Contact one of our experts today to find out more about how we can help you improve your production process.
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