PD IEC TS 62749:2020 - Assessment of Power Quality

In the modern world, where electricity is the backbone of almost every industry and household, ensuring the quality of power supplied by public networks is of paramount importance. The PD IEC TS 62749:2020 standard is a comprehensive guide that provides a detailed assessment of power quality, focusing on the characteristics of electricity supplied by public networks.

Overview

This standard, released on February 24, 2020, is an essential document for professionals in the electrical and energy sectors. It is designed to help engineers, technicians, and policymakers understand and evaluate the quality of power being distributed through public networks. With a total of 62 pages, this standard offers in-depth insights and guidelines that are crucial for maintaining and improving power quality.

Key Features

• Standard Number: PD IEC TS 62749:2020
• ISBN: 978 0 580 51129 5
• Status: Standard

Importance of Power Quality

Power quality is a critical aspect of electrical systems that affects the performance and longevity of electrical equipment. Poor power quality can lead to equipment malfunctions, increased energy costs, and even safety hazards. The PD IEC TS 62749:2020 standard provides a framework for assessing power quality, helping to identify and mitigate issues that can arise from poor quality electricity.

Comprehensive Assessment

The standard covers a wide range of topics related to power quality, including voltage fluctuations, frequency variations, and harmonic distortions. It provides methodologies for measuring and analyzing these parameters, ensuring that the electricity supplied meets the required standards for safety and efficiency.

Benefits of Implementing the Standard

By adhering to the guidelines set out in the PD IEC TS 62749:2020 standard, organizations can achieve several benefits:

• Improved Equipment Performance: Ensuring high power quality can enhance the performance and lifespan of electrical equipment.
• Cost Savings: Reducing power quality issues can lead to lower maintenance costs and energy savings.
• Enhanced Safety: High-quality power reduces the risk of electrical hazards, ensuring a safer environment for both workers and equipment.
• Regulatory Compliance: Meeting the standards helps organizations comply with national and international regulations, avoiding potential fines and legal issues.

Who Should Use This Standard?

The PD IEC TS 62749:2020 standard is ideal for a wide range of professionals, including:

• Electrical Engineers
• Power Quality Analysts
• Energy Consultants
• Utility Companies
• Regulatory Bodies

Conclusion

In conclusion, the PD IEC TS 62749:2020 standard is an invaluable resource for anyone involved in the assessment and management of power quality. By providing a detailed framework for evaluating the characteristics of electricity supplied by public networks, this standard helps ensure that power systems are efficient, reliable, and safe. Whether you are an engineer, a consultant, or a policymaker, this standard is an essential tool for maintaining the integrity and performance of electrical systems.

Invest in the PD IEC TS 62749:2020 standard today and take a proactive step towards ensuring superior power quality in your operations.

PD IEC TS 62749:2020

This standard PD IEC TS 62749:2020 Assessment of power quality. Characteristics of electricity supplied by public networks is classified in these ICS categories:

• 17.220.99 Other standards related to electricity and magnetism

This Technical Specification specifies the expected characteristics of electricity at the point of supply of public low, medium and high voltage, 50 Hz or 60 Hz, networks, as well as power quality assessment methods.

NOTE 1 The boundaries between the various voltage levels can be different for different countries/regions. In the context of this TS, the following terms for system voltage are used:

• low voltage (LV) refers to UN ≤ 1 kV;

• medium voltage (MV) refers to 1 kV < UN ≤ 35 kV;

• high voltage (HV) refers to 35 kV < UN ≤ 230 kV.

NOTE 2 Because of existing network structures, in some countries/regions, the boundary between medium and high voltage can be different.

This document applies to the phenomena listed in Table 1.

Table 1 – Classification of electromagnetic phenomena addressed by power quality indices

Continuous phenomena	Discontinuous phenomena – Events	Other phenomena
FREQUENCY DEVIATION	SUPPLY INTERRUPTION	MAINS COMMUNICATING VOLTAGES
SUPPLY VOLTAGE DEVIATION	VOLTAGE DIP
VOLTAGE UNBALANCE	VOLTAGE SWELL
HARMONIC VOLTAGE	TRANSIENT OVERVOLTAGE
INTERHARMONIC VOLTAGE	RAPID VOLTAGE CHANGE
FLICKER （VOLTAGE FLUCTUATION)

NOTE 3 Specification of related measurement methods can be found in IEC 61000-4-30.

NOTE 4 Specification of the performance of related measuring instruments can be found in IEC 62586.

While power quality is related to EMC in a number of ways, especially because compliance with power quality requirements depends on the control of cumulative effect of electromagnetic emission from all/multiple equipment and/or installations, this document is not an EMC publication (see also Annex F).