The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, microprocessor in association with GPRS, ZigBee, PLC (Power Line Carrier) and voltage current acquisition circuit were adopted to prepare wireless cable theft detection module with detection capability of conductive cable theft for distributed low voltage circuit including overhead line and underground cable. The greatest feature of this module was its capability to monitor simultaneously...
The proponents introduced the development of a power surge monitoring and suppression system with the use of NI LabVIEW. It is designed to capture waveforms and data of an occurring power surge from electrical wirings. The system is intended for household use to protect household appliances. Upon creation of the system, errors and difficulty have brought about problems. The problem acquired is the...
In electrical power systems, such as data centers and hospitals, where service continuity is essential, the electrical operation needs a skilled organization and a team available at all times (24/7) to have a fast emergency response. The hospital management considers doctors, surgeons, administrators, medical devices rightly at the forefront, but electrical and technological systems and the team of...
An unprotected water pipe mainly suffers frequent damages due to water hammer surges developed inside the pipe lines. This paper studied the effect of water hammer in a water delivery pipe theoretically and developed a novel method to combat the damage. The Public Health Engineering Directorate, Government of West Bengal, India has set up an arsenic area piped water supply scheme in the year 2003...
In the case of Taking lightning protection measures for the railway, high-performance devices instead of conventional surge counters are required in order to detect invasion pathways of lightning surge currents into a signal control room or a railroad crossing control box, and evaluate the degradation level of a surge protective devices (SPD). To solve these problems, we have developed Surge Monitor...
In order to develop early failure detection tools for hydro-power plants, “Electricite de France” (EDF) has equipped its high pressure pipes with sensors which monitor the pressure surge transients, the position of the intake and overpressure valves. The control valves are constructed so that the pressure will not exceed a maximum threshold called the Maximum Guaranteed Pressure (MGP). Modifications...
In order to eliminate false alarms, issued by gas sensors in coal mining,caused by Electromagnetic Interference (EMI), a novel field way was brought forward in which the radiated emission measurement in the coal mining roadway was accomplished. The data was acquired through the R&S spectrum analyzer FSP7. With analyzing the influence of alarm and ventilation apertures on enclosure shielding properties,...
The paper discusses the need for a wave energy converter (WEC) to sense and respond to its environment in order to survive and to produce its maximum useful output. Such systems are described for Wraspa, a WEC being developed at Lancaster University and first reported at ICCEP in 2007. The main control system that continually monitors and optimises the power-take-off is termed ldquoStepwise Controlrdquo...
The surge protector (SP) protects the medium wave transmitter damages from deterioration of the VSWR on the output transmission system including the antenna characteristics. In this paper describes the avoidance for SP operation on the antenna VSWR characteristics under the sharpness of the impedance characteristics on high frequency audio modulation. We developed the new type of narrowband detection...
Air cushion surge chamber (ACSC) is a new type of pressure reduction device with some unique advantages like protecting the surface of the natural environment in hydropower plants. However, the inner air pressure of the ACSC could be as high as more than 3 MPa, the monitoring system requires high accuracy and reliability to keep it working safely. In this paper, according to model test and numerical...
From May 1977 through September 1979, the Bell System conducted a study of commercial ac power disturbances ?? To determine their nature and extent ?? To devise statistical ways of predicting their occurrence ?? To reduce or eliminate computer downtime through selection of appropriate, cost-effective power-conditioning equipment for use throughout the System. For a total of 270 months, field data...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.