Posted by messungelectricalengineering on February 4th, 2022

The main power quality issues that result in problems are frequency distortion, voltage variation and harmonics. Overloading in the distribution network causes voltage variations resulting in increased faults and losses in the network. At the consumer end, increasing use of semiconductor-based electronic equipment, non-linear loads and rapid integration of non-conventional energy sources into the grid throws up new challenges for the power quality environment.


An earlier study carried out by APQI shows that the direct costs of downtime in India are in the tune of Rs. 20,000 crore per annum. About 57% of these financial losses are due to voltage sags and short interruptions, while about 35% of the losses are due to transients and surges.However, the cost of prevention for these may be less than 10% of the cost of problems. (

Nowadays, since the current waveform deviates from the ideal sinusoidal wave, voltage waveform distortions are created. Voltage interruptions, transients, harmonics, flickers or start-up currents change the sinusoidal character of the current and thus also the power quality.

Impermissible electrical loading and increased thermal losses are daily occurrences. Both the consumer and the distribution utilities suffer from equipment /process failure and high cost of operation and maintenance due to compromised equipment quality and poor monitoring of consumer establishments. This can result in the equipment operating in a restricted manner or failing completely which may cause production failure.

So, it is a great advantage to identify grid feedback effects early and to implement counter measures.


In India, there are various regulations for quality of electricity supply which apply to generation, transmission and distribution companies. State Regulatory Commissions have specified various regulations in their respective states. These regulations, when dealing with the aspect of power quality, vary in approach and applicability. Therefore, there is a lack of consistency in the way different states deal with power quality, and it is evident that the implementation of power quality of electricity distribution, supply and utilisation / consumption are not very structured, nor are they strictly enforced by the Regulators. This has inevitably fostered ambiguity, and limited awareness of the economic importance of power quality in the entire eco system of electricity distribution-supply-utilisation.


In India, it is becoming mandatory for industries to ensure harmonic control in electrical power systems as per IEEE 519-2014 standards. In India, Tamil Nadu has already made IEEE 519-2014compliance mandatory; Maharashtra will enforce it by 2023. No doubt other states will also follow suit.

Industry realises that PQ and reliability are critical for the successful delivery of a product and uninterrupted operation of an industry. It is even more critical for industry to pursue Energy Efficiency (EE) because of the increasing application of electronic loads and digital controllers which are sensitive to the quality of power supplied.

Hence, IEEE 519-2014compliance will slowly but surely become the norm for industries.


The IEEE-519-2014 is a system guideline for setting limits on voltage and current distortion, which is being followed by industries around the world.

The IEEE 519-2014 standard defines the voltage and current harmonics distortion criteria for the design of electrical systems. Goals for designing electrical systems that contain both linear and non-linear loads are established in this standard.

It details the recommended practices and requirements regarding harmonic control in electrical power systems. It defines the specific and separate responsibilities for each participant – utilities and users – to maintain the voltage THD within acceptable limits at the Point of Common Coupling (PCC) between the utility and the user, and protect the user and utility equipment from the negative impact of harmonics.

IEEE 519-2014 introduces measurement methods and statistical evaluation techniques to determine compliance with the recommended limits. All measurement methods are referenced to IEC (European) standards:

  • IEC 61000-4-7 for harmonics and inter-harmonics measurements
  • IEC 61000-4-30 for power quality measurement methods
  • IEC 61000-4-15 for Flickering measurement methods


Messung Systems (Electrical Engineering div.) is recognised as the System Integrator for Janitza electronics GmbH, in India. Janitza provides the best solution for both preventive and corrective action for power quality, residual current monitoring and modern energy management(e.g. ISO 50001).

Janitza offers the complete system solution under one roof – from current transformers through measurement devices, from communication devices through the IT environment, databases and analysis.

A world leader in development and manufacture of energy management solutions, Janitza\'s energy measurement technology, class A power quality monitoring devices, GridVis® system software, energy data management systems, digital integrated measurement equipment, power factor controllers, harmonics filtersand correction systems are setting the standard throughout the world.

Messung supplies Janitza\'s Energy measurement technology, Class A power quality analysers, energy measurement devices,GridVis® system software, and energy data storage & management systems, for industry across India.

Some Highlights of Janitza Products

  1. Industry 4.0 (Linking of Production and Communication) – Power Grid monitoring software, the energy portal and the Janitza Apps are tightly meshed with measurement devices
  2. 3 in 1 Solution – The UMG measurement devices combine three solutions in single product: Energy Management, Power Quality Monitoringand Residual Current Monitoring
  3. Open Communication Architecture – Janitza products easily communicate with numerous protocols (Modbus, Binfile, OPC, Profibus, Profinet, BACnet)
  4. Certifications – Janitza fulfils the ISO 50001 standard as well as requirements for a quality management system as per DIN EN ISO 9001. All measurement devices are tested and certified by Independent Institutes
  5. Measured Data Memory – For select products, measured data memory up to 256 MB.

Janitza Software Features

GridVis® Software - Three applications (EMS, PQ & RCM); One Software

  1. Energy Management certified according to ISO 50001
  2. Networking analysis & evaluation
  3. Security and alarm management
  4. Multilingual and scalable software solution
  5. Reports can be automatically generated and dispatched


As the authorised distributor and system integrator for Janitza electronics GmbH in India, call Messung to solve your energy management challenges, and access Janitza’s globally acclaimed 3-in-1 technology for energy management, power quality and RCM.

Messung has the expertise to customise IEEE 519-compliant energy management solutionsthat ensure energy efficiency, supply stability, cost savings and maximum uptime. Messung will support you from the development of the conceptual solution till commissioning. They will also help you with the maintenance and support and training your personnel for the secure operation of the energy systems.

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Joined: February 27th, 2021
Articles Posted: 15

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