ipec mtekpro joint venture technology for testing and measuring instruments
- 1. Mtekpro Technologies Pvt Ltd. MTEKPRO Technologies Pvt. Ltd. (ISO 9001:2015) 28, Second Floor, Okhla Industrial Estate Phase 3, New Delhi –110020, Phone: +91 11 35009275 Website: www.mtekpro.com, GSTN: 07AAHCM1713A1Z3 MSME Registered: UDYAM Reg No # UDYAM-DL-08-0011134
- 2. Product and Service Offerings • Mtekpro Technologies is a dynamic and fast-growing organization that offers complete electrical testing and measurement solutions with accountability, quality, and traceability. • Established in 2011, we provide a complete series of onsite electrical testing services, such as partial discharge testing and monitoring, cable testing, motor testing, transformer testing, relay testing, and more; on all electrical assets like transformers, switchgears, cables, etc. on a pan-India basis with a strong team of highly skilled and experienced engineers to provide reliable service support. • We also represent several pioneering international companies in the Indian Market, including the likes of IPEC, Schleich Advanced Test Technologies, BHT, ELVAC, Wintech Group, Kehui, Terasense, Hikmicro etc. • We believe in consistently adapting and upgrading ourselves to cater to the needs of our customers, guaranteeing customer satisfaction and always striving to provide prompt support and efficient solutions. Over the years, we have established strong relationships in the Indian power sector with esteemed organizations such as NTPC, NHPC, MPPTCL, BHEL, Power Grid, UPPTCL, IOCL, Bharat-Bijlee, BORL, HURL, Siemens, GETCO, PTC India and TATA Power. MTEKPRO Technologies Pvt. Ltd. (ISO 9001:2015) 28, Second Floor, Okhla Industrial Estate Phase 3, New Delhi –110020, Phone: +91 11 35009275 Website: www.mtekpro.com, GSTN: 07AAHCM1713A1Z3 MSME Registered: UDYAM Reg No # UDYAM-DL-08-0011134
- 3. Objectives of Maintenance Keep plant in good working order Maintain safety standards Maximise lifetime
- 4. Maintenance Strategies Preventative Maintenance Carried out at pre-determined/scheduled intervals Corrective Maintenance Carried out to restore failed equipment Opportunity Maintenance Carried out when higher priority equipment is out of service Statutory Maintenance Carried out to facilitate statutory requirements Condition Based Maintenance When Condition Monitoring shows the need
- 5. Our Principals: IPEC • Based in Manchester, UK, IPEC are specialists in On-Line Partial Discharge (PD) monitoring and testing. • Their main products are Partial Discharge Monitoring Systems along with handheld Partial Discharge Spot Testers for critical electrical assets like switchgears, transformers, cables, GIS, rotating machines, etc.
- 6. Products: IPEC Handheld PD Detectors
- 7. Products: IPEC Monitoring Systems On-line Partial Discharge monitors vary in complexity and design, depending on the environment in which they will be permanently installed. Large systems are installed in MV substations, monitoring every cable and every switchgear. More industrialized devices are used in distributed applications, such as small substations and EHV assets.
- 8. Products: IPEC Sensors The Partial Discharge sensors are designed to be non-intrusive and retrofitted to existing equipment. Different sensors are used to detect Partial Discharge activity on various assets.
- 9. Our Services: Condition Monitoring Routine Tests Temporary Monitoring Permanent Monitoring Special Tests
- 10. What is Partial Discharge? • Where does it occur? • Why can it occur at normal operating voltages? • What is a PRPD and why does PD form patterns? • What are the effects of PD and what are the consequences? How to Detect PD? • Current pulses induced in cables and switchgear • Electromagnetically radiated pulses • Acoustic pulses Partial Discharge Theory
- 11. Partial Discharge Theory What is Partial Discharge? ‘Electrical discharge that does not completely bridge the space between two conducting electrodes’ Caused by defects, damage, contamination or incorrect installation of electrical insulation
- 12. Where in does PD occur? In electrically stressed insulation either; • Phase to Phase • Phase to earth Partial Discharge Theory
- 13. Gas filled voids in solid insulation Bubbles in liquid insulation Around electrodes in air/gas Partial Discharge Theory
- 15. Breakdown strength Polyurethane 10kV/mm 20m m Polyurethane Va Example: PD will occur within normal working voltage of an asset, specifically occurring at the defect location The Polyurethane insulation will fail when Va = 200kV Partial Discharge Theory
- 16. PD in the positive and negative half cycles Partial Discharge Theory
- 17. PRPD Pattern Analysis PRPD Patterns can help differentiate PD from Noise
- 18. PRPD Pattern Analysis - PD PRPD Patterns of PD can vary, but all have some consistent characteristics and pattern in the power cycle
- 19. Individual discharges are low energy but they are very localised and can be very repetitive. Damage is caused by; Mechanical – Ionic bombardment Thermal – Local heating at discharge site Chemical – Discharge energy breaks chemical bonds The small discharges will cause progressive damage to the insulation Partial Discharge Theory: Effects
- 20. Our Services: Condition Monitoring • Condition Monitoring on MV and HV assets including Transformers, Cables, Switchgear and Rotating Machines. • Condition Monitoring is a form of Preventive Maintenance where we test and monitor various parameters of electrical assets to check the asset for any developing faults. • For every asset we carry out different Condition Monitoring Tests. In following slides, we shall elaborate on the same asset-wise.
- 21. Condition Monitoring: Transformers • We carry out Partial Discharge Testing and Monitoring of Transformers using Ultrasonic and UHF technology. For Ultrasonic Detection we use Piezoelectric Acoustic Sensors and for UHF detection we use a Drain Valve sensor to measure the internal Partial Discharge Activity in the Transformer. • For Dry Type transformers, Ultrasonic and TEV methods are used for Partial Discharge detection. • In addition we also carry out Thermography of the asset to find any thermal hotspots on the body of the transformer. Oil Tests and DGA is also done to analyze the health of the Transformer Oil.
- 22. Condition Monitoring: Switchgear • For Switchgear Panels we carry out Partial Discharge Spot Testing using Handheld PD Detectors, which use multiple modes to detect the Partial Discharge activity inside the Switchgear Panels. • For AIS panels we use Acoustic and TEV methods to detect partial discharge activity in the asset. For GIS panels we use UHF sensors to detect the PD activity. • Along with Partial Discharge, we also carry out Thermography and Inspection of the panels, given that the panels are fit with suitable IR windows.
- 23. Condition Monitoring: Rotating Machines • We carry out Partial Discharge testing of motors and generators using HFCT and HVCC sensors. • Along with Partial Discharge testing, we also carryout online thermal, vibrational and acoustic analysis of the asset to assess its condition and note any change in trends. • To test the Electrical parameters of Motors, we are also proficient in Motor Current Signature Analysis (MCSA) and Electrical Signature Analysis (ESA) tests.
- 24. Condition Monitoring: Cables • We carry out Partial Discharge on cables using an HFCT sensor which can be clamped around the cable at the terminations. This gives us the accurate value of the Partial Discharge signals travelling in the cables.
- 26. Condition Monitoring: Continuous Monitoring of Critical Assets • We are also proficient in continuous partial discharge monitoring on various electrical assets (MV and HV) like GIS, AIS, Transformers, Switchgears and Cables using our precise in-house Measurement and Monitoring Systems manufactured by our partner IPEC, United Kingdom. • The continuous monitoring is carried out by a centralized monitoring system, starting at 4 channels and going up to 128+ channels depending upon the customer requirement, along with different sensors which can be easily installed on the asset to be tested. • We are amongst the frontrunners in India when it comes to providing Continuous Partial Discharge Monitoring services with systems capable of 24x7 monitoring of assets with minute wise data collection and reporting, along with accurate and swift alarm systems without any false alarms.