Asset Management of the Interconnection of Wind Turbines
Funder Program: RETOS COLABORACION
File number: RTC-2017-6349-3
Ormazabal y Cía (OyC)
Ormazabal Cotradis (CTRD)
Ormazabal Protection & Automation (OP&A)
Mondragon Goi Eskola Politeknikoa (MGEP)
The world of electricity grids has been changing in recent years thanks to the lower cost of information technology. This “revolution” in the IT-driven sector has been a lever for boosting R&D activity in other disciplines. In general, a great deal of work is being carried out on aspects such as the safety, reliability and integrity of the lines in medium and high voltage electrical networks. These aspects can be effectively controlled by monitoring the state of their isolation. Over the last decades, the electrical network scientific community has developed effective techniques for measuring and evaluating the state of the main insulation of the equipment installed in the high-voltage network by measuring various parameters that previously had to be carried out under out-of-service conditions. These measurements were carried out by specialized personnel with complex and expensive equipment that had to be transported to the points where the diagnoses had to be made.
However, continuous monitoring systems allow network equipment to be monitored and incipient defects to be detected, making it possible in turn for network operators to adopt early measures such as: more detailed monitoring, new complementary tests to corroborate the results obtained by the continuous monitoring and planned repair, avoiding unexpected power cuts due to sudden equipment failures that can additionally pose the risk of explosion and fire.
Given the extent of distribution networks, any solution adopted must be intrinsically safe, reliable and economical. The economy requirement is the one that requires that the solutions provided be integrated, so that the installed and tested solutions can be supplied from the factory. However, the possibility of equipping the equipment currently in service with diagnostic means should not be ruled out, especially taking into account their progressive aging and their possible consequences in the event of failure.
The objectives of the GADIA project are as follows:
Transformers: Develop detectors for on-line monitoring of dielectric liquid degradation in distribution transformers using sensors developed in-house.
Cells with vacuum interrupters: Develop an integrated “on-line” monitoring system of the degree of vacuum in the switches installed in medium-voltage cells.
Develop a system for monitoring and diagnosing insulation in transformers and cables.
Ceit's role in the project
Ceit’s role in the project focuses on the development of two systems:
The supply system for the pressure transducer installed inside the vacuum switch.
The liquid dielectric diagnostic system.