摘要:
Monitoring system in real time of the state of capacitance graded bushings of power transformers, powers reactors, current transformers, circuit breakers and similar, it is applied preferentially by power transformers; power reactors; chain transformers, circuit breakers and similar, being the system passible of accomplish the monitoring in real time of capacitance graded bushings (1), each one resulted from a capacitive 'tap' to which connects a 'tap' adapter (3) that, then, connects to a measuring module (4) which receives signals coming from capacitive 'tap' (2) of three graded bushings (1) which form a triphase group. One or more measuring modules (4) can, if connect to an only interface man-machine module (5), by means of a serial communication (6), forming a modular system.
摘要:
A system and method for monitoring a dielectric state of high voltage equipment. A leakage current is measured and compared to a programmed limit value. An alarm is activated if the leakage exceeds the limit value to indicate that insulation has seriously deteriorated. The leakage current measurement is verified using a comparison of individual leakage currents with a change in a vector sum of leakage currents.
摘要:
A system and method for monitoring a dielectric state of high voltage equipment. A leakage current is measured and compared to a programmed limit value. An alarm is activated if the leakage exceeds the limit value to indicate that insulation has seriously deteriorated. The leakage current measurement is verified using a comparison of individual leakage currents with a change in a vector sum of leakage currents.
摘要:
improvements introduced in monitoring system of dielectric state of high voltage equipments with cap acitive insulation, such as condensive bushings, current transformers, potential transformers and similar allow to detect quick evolution insulation deteriorations and to emit correspondent alarms, being also able to verify their consistency in order to avoid false alarms as well as to automatically disconnect the equipment in case of a critical deterioration; it also allows to monitor in real time the BPDs quipped condensive bushings state as well as the bushings applied in HVDC high voltage direct current.
摘要:
DECENTRALIZED SYSTEM AND ARCHITECTURE FOR REMOTE REAL TIME MONITORING OF POWER TRANSFORMERS, REACTORS, CIRCUIT BREAKERS, INSTRUMENT TRANSFORMERS, DISCONNECT SWITCHES AND SIMILAR HIGH VOLTAGE EQUIPMENT FOR POWER PLANTS AND ELECTRIC POWER SUBSTATIONS, remarkably consisting of intelligent sensors of the IED type that make concerning measurements in the high voltage equipment, interconnected through a communication network to a monitoring central computer, allowing user's remote access to the measurements and diagnosis of the equipment condition as well as emitting automatic alarms should any abnormality appear in it.