Our Power quality monitoring systems combine hardware for waveform measurements with flexible software capable of performing any power metering, power quality, or power monitoring analysis. Measurements such as RMS, power factor, frequency analysis (FFT) and harmonic analysis can be performed over multiple phases and reported via a variety of methods including Web, PDF, database connectivity, email, or cell communication. Use LabVIEW to customize your power quality monitor to fit your specific needs.
System overview
A basic power quality system will monitor the voltages and currents from each phase. It may also monitor the voltages and currents on the neutral line if imbalanced loads or harmonics are suspected. A basic power metering system will monitor the RMS voltages and currents from each of the three phases and will monitor the power factor. Power quality monitoring and power metering will allow plants to perform predictive maintenance, energy management, cost management, and quality control.
Voltage Measurement module
- 300 Vrms measurement range with line-to-neutral as well as line-to-line measurement
- 600 Vrms channel-to-channel isolation eliminates ground loops
- Ideally suited for a 3-phase system.
- 50 kS/s/ch simultaneous sampling of all the channels gives a accurate representation of phase angle between voltage and current.
- Built-in antialias filters eliminate unwanted signals.
- Combined with Current measurement module and current transducer creates a ideal power quality monitoring system.
Current Measurement module
- 5 Arms measurement (14 A peak)
- 50 kS/s/ch simultaneous inputs
- Built-in antialias filters
- Screw terminal connectors included, protective back shells sold separately
- 250 Vrms channel-to-channel isolation
- Transformer Monitoring
- Acquire process, analyze & communicates the critical parameters to centralize Data Center for analysis.
- Visualization of wide spread Distribution Transformers in Electrical Network.
- Guide Predictive maintenance against warranty cost
- Record all relevant values in a local database.
- Detection of incipient faults at an early stage
- Keep a track of thermal ageing.
- Advanced information is available to understand various trends and improve the management of possible overload conditions and critical hotspot temperatures
- Allows more efficient, profitable and controlled transformer exploitation.
- Substation Monitoring
- Transformer Monitoring
- Environment Monitoring
- Fan Control
- Switches Monitoring
- Circuit Breaker Monitoring
- Remote access and alarming
- Measurement and control system for Generators
- Control and Monitor the Power Supply to the whole System by controlling Thruster Bank.
- Measurement of Data from all the 3-phases of Generators (500MW) for testing the quality of power like Voltage/Current peak, Power Factor, etc.
- Measurement of the total health of the System like Temperature, RPM, Pressure, etc.
- Machine Condition Monitoring (MCM) of the generators.
- Data-ware Housing of the entire Test Bed at the central server maintaining the redundancy.
Harmonics
- Waveform harmonic power quality problems are usually caused by equipment with a nonlinear current draw.
- Pulling power in a nonlinear manner introduces harmonics in the electrical system and can overheat plant distribution transformers.
- These harmonics can cause current transmission over the neutral power conductor in a 3-phase system.
- This high current can overload circuits, breakers, and transformers.
Power Factor
- In a plant, the power factor, or difference in the phase of the voltage and current waves, is caused by inductive and capacitive loads.
- Inductive load – Causes the current to lag behind the voltage.
- Capacitive load - Causes the current to lead the voltage.
- Increased presence of inductive loads results in lagging Power Factor, installing capacitor banks can help in correcting the power factor.
RMS Voltage fluctuation
RMS, or the root mean squared, is the standard way to measure the level of a sinusoidal wave.
There are three types of RMS voltage variations; a sag, a swell, and an interruption.
Sag - Sags caused within the facility are often caused by load variations or improper wiring. One common cause of a sag is starting an electrical motor. When a motor is started it has a very high inrush current (sometimes 6-10 times the normal operation current).
Interruptions - in a facility are typically caused by fault protection from a circuit breaker or from a fuse. They can sometimes also be traced to a loose wiring connection.
Swells - are typically caused by a rapid decrease in load such as when an electric heater shuts off.
There are three types of RMS voltage variations; a sag, a swell, and an interruption.
Sag - Sags caused within the facility are often caused by load variations or improper wiring. One common cause of a sag is starting an electrical motor. When a motor is started it has a very high inrush current (sometimes 6-10 times the normal operation current).
10% < RMS Voltage < 100%
Interruptions - in a facility are typically caused by fault protection from a circuit breaker or from a fuse. They can sometimes also be traced to a loose wiring connection.
RMS Voltage < 10%
Swells - are typically caused by a rapid decrease in load such as when an electric heater shuts off.
110% < RMS Voltage
You can specify various averaging modes for your measurement, such as RMS averaging, vector averaging, or peak hold, as the number of averages. You can observe the influence of these averaging parameters, typically on the noise floor, and notice that vector averaging requires the use of a trigger in order to lower the noise floor without lowering the fundamental along with it.
