© ALSTOM 2013. All rights reserved. Information contained in this document is indicative only. No represen tation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Alstom contributes to th e protection of the en vironment. This leaet i s printed on environme ntally-friendly pa per. T P W R / P R S H T / A L S P A C P D / E N / 4 . 2 0 1 3 / F R A / 1 3 7 2 Reliable condition indication The stator winding is one of the most stressed parts during generator operation. Conventional generator protection systems are not designed to detect insulation problems at an early stage. But insulation aging is a self-reinforc ing process that, if unchecked, can result in expensive unplanned outages. Leveraging decades of e xperience in generator monitoring & diagnostics, Alstom’s ALSPA® Car e Partial Discharge addresses this problem by allowing the early detection of problems within the stator winding system and along the bus bar long before a failure appears. MONITOR THE ENTIRE WINDING ALSPA® Car e Partial Discharge monitors the entire stator winding. Furthermore, it offers an approach that allows a differentiated analysis of the partial discharge (PD). APPLI CATION • All types of medium and large generators • Compliant with IEC 60270 / 60034-27-2 SCOPE Hardware and software module for ALSPA® Care system REQUIRES • Alstom high capacitance PD sensors (or compatibl e) • ALSPA® Care Box • Optionally ALSPA ® Care Centre server for long term data storage SUPERIOR FEATURES FOR MORE RELIABLE DIAGNOSTICS With sensors installed on the three phases and the neutral point, the ALSPA® Care Partial Discharge system acquires the PD signal originating from pulse current sources no matter where they occur in the winding. ALSPA® Care Partial Discharge is a function of the ALSPA® Care Generator solutions for condition monitoring. By monitoring partial discharges in the generator, problems related to insulation aging in the stator winding system can be identifed at an early stage to allow cost-effective mitigation. ALSP A ® Care Partial Discharge Generator stator winding condition monitoring POWER AUTOMATION AND CONTROLS CUSTOMER BENEFITS Risk reduction Protect your generator assets and avoid critical damage leading to high replacement cost by monitoring the whole stator winding Availability Avoid forced outages with precise condition-based monitoring and trend analysis Reliability Support PD source identifcation for accurate assessment of the stator winding condition as a reliable base for planned maintenance
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