Distributed system

Distributed system for Power Quality Monitoring

A Power quality monitoring system can be built simply from ENAs (ELCOM Network Analyzers). A comprehensive modular solution, used for monitoring power quality, can be used to document and analyze the power quality in selected parts of the transmission or distribution network. Data acquired from the distributed analyzers is transmitted to the central database server. The user can view and evaluate the data stored on the database server through dynamic web pages displayed on a standard web browser. The user can also view the data from any monitored location for a selected time interval and generate printed reports.

The main advantage of using ENA to build a distributed power quality monitoring system is the availability of standard technologies, in the field of computer networks, such as SQL Server, ODBC, and TCP/IP protocol. Permanently installed ENA features extensive communication functions and a large amount of data space. The system allows for centralized data storing, remote administration and online supervision.


The ENA distributed system software package contains the following software components: ENA-Web, ENA-Monitor, ENA-Replicator.


  • ENA-Web is used for analyzing, displaying, comparing, statistical processing, exporting and printing reports from ENA power quality analyzers located in the central database MS-SQL or ORACLE. Data reports are displayed on the client PC (connected to the server) with Microsoft Internet Explorer.
  • ENA-Monitor runs on a database or application server and creates a connection to the distributed ENA analyzers. It transfers data from the analyzers and stories it on the database (MS-SQL or ORACLE). ENA-Monitor also provides information on the status of the entire distributed system.
  • ENA-Replicator runs directly on the ENA and inserts measured data into the database server.
  • ENA-SCADA is a tailor-made user interface used for simultaneously displaying online data on multiple consoles.