The quality of electricity (JEE) is defined, in accordance with the relevant standards and regulations, by a set of parameters defining the utility of energy supplied to consumers. JEE is affected by many factors that interfere with the voltages, frequencies and currents present in the network. The measurements of the mentioned parameters are made by SO-52v11-eME power quality analyzers, while data collection and analysis is carried out using the SYNDIS PQ system software, which collects data from the analyzers in on-line or off-line mode. The operation of the entire JEE rating system is shown in the block diagram presented below.

Power quality analyzers SO-52v11-eME continuously monitor all necessary parameters. Data is made available by event (voltage dips, surge currents, voltage swells, breaks, etc.) or in the form of COMTRADE or PQDIF files. The system can be equipped with a site map and an event log. The user has the ability to access reports, charts and other data about JEE using solutions based on website technology.

Our systems are used by energy companies and large industrial plants. It is particularly useful to use our solutions in the dynamically developing renewable energy sector, e.g. in wind farms, due to the multi-directional data transmission from our analyzers.

Our largest implementation in terms of quantity and area is launched in one of the distribution companies. The JEE rating system at this distribution company has the following advantages:

  • On-line measurements cover the majority of important GPZs (Main Power Point)
  • the system is equipped with a system map and an event log mechanism
  • it is possible to analyze and distribute disturbances throughout the entire area of the company
  • the possibility of comparison with the data supervised by the SCADA system
  • all transmissions are carried out via Ethernet links
  • the system is redundant - two servers are working: primary and backup
  • data can be collected and aggregated over different time periods
Block diagram of power quality assessment in the SYNDIS PQ system

We know that each implementation requires an individual approach. Similar functionality has been achieved in another distribution company, where the implementation is being gradually developed. Further analyzers are added to the already working structure. Here are the advantages of this power quality monitoring system:

  • scalable system structure; "on-line" measurements cover an increasing area, and launching subsequent analyzers "seals" the system
  • device flexibility; analyzers are installed in various facilities: in the main power supply, on poles in the field, in switching stations of CHP plants, in biogas plants
  • variety of transmission links; transmission to the master system takes place using Ethernet, GPRS links, but RS-485 serial links or batch operation can also be used
  • different data aggregation periods and configurable recording trigger thresholds
  • the ability to adapt to measurements on any range of voltages and currents   []

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