Understanding power quality and its importantce
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The document discusses the importance of power quality in electrical systems, detailing its impact on operational efficiency and the consequences of disturbances such as harmonics, sags, and transients. It emphasizes the need for monitoring and managing power quality to ensure safe operation and reduce costly downtime in various applications. The document also highlights the solutions and technologies offered by Messung Systems, including power quality analyzers and monitoring software.
Understanding power quality and its importantce
- 2. UNDERSTANDING POWER QUALITY AND ITS IMPORTANCE www.messungelectricalengineering.com
- 3. INTRODUCTION - MESSUNG SYSTEMS PVT LTD • Messung started its journey in 1981. • For nearly four decades, Messung has been at the forefront of industrial automation in India. • Today, our portfolio and prowess extends far beyond this field to Home, Office & Hotel Automation, Building & Infrastructure Automation, Power Distribution, Workplace Ergonomics, Electronic Assembly and Test & Measuring. www.messungelectricalengineering.com
- 5. www.messungelectricalengineering.com • What is Power Quality and why you should care • Power Quality Disturbances • Power Quality Monitoring • Janitza Products Overview CONTENTS
- 6. www.messungelectricalengineering.com BASIC CONCEPT OF AN ELECTRICITY • An Electricity is a fuel which is required for any Electrical equipment to operate in its intended manner. • Unusual Commodity • Required as a continuous flow. • Cannot be conveniently stored in a quantity. • Electric Power: It is a Rate at which work is done. • P = V X I X COSØ…………………For AC Circuits • P = V X I ………………………….For DC Circuits • Electric Energy: when power is applied for certain duration of time, an energy gets consumed by an equipment. • Every equipment is designed to operate on certain rated conditions, these conditions are mentioned on the Nameplate of an equipment.
- 7. www.messungelectricalengineering.com PERFECT AND NON PERFECT GRID PERFECT GRID TIME AMPLITUDE VOLTAGE WAVEFORM CURRENT WAVEFORM 3 NON PERFECT GRID AMPLITUDE TIME
- 8. www.messungelectricalengineering.com WHAT IS POWER QUALITY AND WHY YOU SHOULD CARE • Power Quality • "The concept of powering and grounding sensitive equipment in a manner that is suitable to the operation of that equipment." • Electronic equipment & controls are increasing • System control and energy efficiency is a priority • The modern power grid is changing • High dependence on reliable electrical systems • Some Facilities operate 7 days a week, 24 hours a day • Many facilities have high cost of downtime
- 9. www.messungelectricalengineering.com CONSEQUENCES • Energy efficiency and Power Quality is increasingly a concern of organizations • Maintaining Power Quality to the level that is required by the application enables safe operation and reduces costly downtime. • Power failure, malfunction, overheating, flickering light, energy waste, etc.
- 10. www.messungelectricalengineering.com POWER QUALITY STANDARDS Characteristics of the voltage (PQ) in public electricity supply networks Recommended practices and requirements for Harmonics Control in Electrical Power Systems Electromagnetic compatibility (EMC): Ambient conditions; compatibility level for low frequency, conducted interferences in industrial plants Testing and measurement techniques – Power Quality measurement methods EN 50160 IEEE 519 IEC/EN 61000-2-4 IEC/EN 61000-4-30
- 11. www.messungelectricalengineering.com TYPES OF POWER QUALITY PHENOMENON
- 12. www.messungelectricalengineering.com HARMONICS • Harmonics are extra frequencies (multiples of fundamental frequency) that when present in an electrical circuit, distort the AC sine wave • Causes: Non-linear electrical loads; Loads with rapidly changing energy consumption • Consequences: Inefficient operation; Excess heat (skin effect); Overheating in neutral conductors; Decreased efficiency and lifespan of equipment; Circuit breakers can trip • Benefit of measuring: Identify the source of harmonics in the electrical system; Increase operational safety and efficiency Capacitors destroyed due to harmonics
- 13. www.messungelectricalengineering.com SAGS AND SWELLS • Voltage Sag is a decrease in rms voltage less than 0.9 pu for a duration less than 1 minute • Voltage Swell is a increase in rms voltage greater than 1.1 pu for a duration less than 1 minute • Causes – Heavy energy loads turning on or off (inside) or network faults (outside) • Consequences – Damage to machines and equipment; Loss of use; Short interruptions can be catastrophic for sensitive applications • Benefit of measuring – Avoid damage and costly downtime
- 14. www.messungelectricalengineering.com TRANSIENTS • Transients are high frequency energy packets which superimpose on fundamental frequency wave and severely affect the high impedance circuit • Causes: Switching operation (arcing), lightning strike or malfunction • Consequences: Fast change in voltage, current or load; Can lead to insulation breakdown; Breaker trips and damage to equipment • Benefit of measuring: Avoid costly downtime and damage to equipment
- 15. www.messungelectricalengineering.com UNBALANCE • Deviation in voltage or current waveform from perfect sinusoidal, in terms of magnitude or phase shift is called unbalance in a system. • Causes: Asymmetry of loads like single phase loads, phase-to-phase loads or unbalanced three phase loads (e.g. welding equipment) • Consequences: Reduced efficiency; Excess heat and overheating; Device failure and damage to equipment; Reduced lifespan of equipment • Benefit of measuring: Increase lifespan; Avoid overheating; Reduce unwanted downtime
- 16. www.messungelectricalengineering.com FLICKER • Voltage variations cause light density changes in lamps, which can result in visual perceptions referred to as flicker • Causes: Load variations (furnaces, welding machines, generators, VFDs, large motors); Wind generators • Consequences: Visible fluctuations in brightness of a lamp; Possible health problems • Benefit of measuring: Find out what equipment within the electrical distribution is causing Flicker
- 17. www.messungelectricalengineering.com RESIDUAL CURRENT MONITORING • TN-S system (5-conductor network) – Basic precondition for the safe operation of IT equipment, machinery • and networked systems including residual current monitoring • RCM plays important role in high availability supply systems such as Data Centres and Hospitals • Rapid & direct identification of faults and insulation problems • Avoids fire risks and increases system availability • Extra safety in areas in which no RCDs can be used due to operational reasons • Preventive maintenance = higher productivity & uptime
- 18. www.messungelectricalengineering.com POWER QUALITY MONITORING (PQM) • Power Quality Monitoring (PQM) is the process of gathering, analyzing and interpreting raw measurement data into useful information • PQM is often done to improve system-wide power quality performance • Power Quality Monitoring includes: • Power Quality metering, monitoring and onsite measurements • Temporary and Permanent power quality monitoring to facilitate problem solutions • Documenting and trending system performance to increase system reliability
- 19. www.messungelectricalengineering.com BENEFITS OF POWER QUALITY MONITORING (DIN EN 50160) Secure, highly-availability power supply Assured quality of the electrical energy through continuous monitoring and analysis Avoidance of overload situations Avoidance of production stoppages Ensuring product quality/stable processes Maximisation of operating times Production-related quality assurance by monitoring the local power quality Optimisation of the maintenance costs
- 20. www.messungelectricalengineering.com ONE SYSTEM THREE BENEFITS Energy Management ISO 5001 • Reduces energy costs • Improves energy efficiency Power Quality EN50160 • Reduces downtime • Optimizes maintenance Residual Current Monitoring • Identifies insulation faults faster • Improves supply reliability
- 22. www.messungelectricalengineering.com PORTFOLIO OF DEVICES On its capabilities UMG96PA UMG605 UMG512PRO UMG509 UMG96PA -MID UMG96PA -MODULES UMG103 -CBM UMG801 MOD-800 UMG804 EC-1 EC-2 EC-3 EI-1 ED-1 UMG96S2 UMG604 UMG804 BCPM RCM202 RCM201 UMG96RM UMG96RM-E UMG96RM-P UMG96RM -CBM UMG96RM-PN UMG96RM-EL UMG96RM-M
- 24. www.messungelectricalengineering.com JANITZA UMG 512-PRO • Power Quality Analyzer, Class A according to IEC 61000-4-30 • High Accuracy: Active Energy Class 0.2S Voltage 0.1%, Current 0.1% • Modbus Master / Gateway & Modbus RS485 • Modbus TCP, FTP, SMTP, SNMP, Bacnet, Profibus • All communication protocols are working simultaneously • NTP and PTP time synchronisation • Jasic PLC Programming • Memory 256 MB • Digital I/O, (2 In & 2 Out), Temperature Input • 2 Analogue Inputs for RCM Measurement or Temperature Measurement • Logging of currents and voltages (15 – 440 Hz) • Recording of over 2,000 measurement values
- 25. www.messungelectricalengineering.com JANITZA SOFTWARE GridVis software Visualisation software for energy management systems and for power quality monitoring.
- 26. www.messungelectricalengineering.com JANITZA APPS – APPLICATION SOFTWARE WITH KNOW-HOW • APPs can be called up via the measurement device homepage • Web-based data display and configuration • No software installation required • Data can also be displayed directly in the browser on mobile devices such as an iPad • Extremely cost-effective and convenient solution • User-defined settings enable a low data volume
- 28. www.messungelectricalengineering.com Contact us MESSUNG SYSTEMS PVT. LTD. 501, 502 & 503 Lunkad Sky Vista, Viman Nagar, Pune, India - 411 014. +91 20 6649 2800 | info@messung.com THANK YOU