The Global Positioning System (GPS) offers a very easy and a relatively cheap way of finding out ones location on the planet. As the name indicates this project is an application of GPS. It is a very hardship business for fishermen who stand in the middle of the ocean without knowing where they are actually located. This project addresses these problems by providing a preprogramed portable navi...

The undesired operation of zone 3 may be one of the most conspicuous protective relay features due to the incorrect zone 3 relay operations which have been conducive to the severity of blackouts. Therefore, determining the accurate zone 3 setting of the distance relay is deemed to be necessary. This paper focuses on the development of a new technique for calculating zone-3 setting of distance r...

With China’s attention to the construction of ecological civilization,the reform existing environment governance system is an important way realize civilization.This paper puts forward corresponding measures for problems in protection management China from several aspects:establishing prediction system,cleverly designing economic punishment system,establishing comprehensive application mechanis...

This paper introduces the basic structure of multi-agent based protection system for distribution system with DGs. The entire system consists of intelligent agents and communication system. Intelligent agents can be divided into three layers, the bottom layer, the middle layer and the upper layer. The design of the agent in different layer is analyzed in detail. Communication system is the brid...

This paper presents a new digital protection system to solve the protection challenges in future smart grids, i.e., fast protection and fault isolation in a loop-structured system with limited magnitude of fault current. The new system combines two protection algorithms, i.e., a differential protection as the primary algorithm and an overcurrent protection as the backup one. The new system uses...

In this paper, we introduce the use of program evolution as a technique for defending against automated attacks on operating systems.

The application of Artificial Intelligence (AI) methods in power system protection has been addressed in this paper. Particular emphasis has been put on Artificial Neural Networks (ANN) and Fuzzy Logic (FL). Several novel concepts have been introduced including ANN application to CT and CVT transients correction, fuzzy criteria signals, fuzzy settings and multi-criteria decision making for digi...

For High Voltage Direct Current (HVDC) applications, the control and protection system plays an essential role in the overall performance of the transmission system. The control and protection system adopted by ABB Power Systems uses the latest technology from the fields of electronics and microprocessors. The main objective of this paper is to describe the experience from using the MACHTM (Mod...

Standards relating to the development of safetyrelated systems containing software tend to focus on the requirements that need to be met in order to ensure that a system of the expected integrity is delivered. These standards are establishing benchmarks which customers and regulators are now specifying. The problem is that if a high integrity system is required, it may be uneconomic because of ...

Secure computing has been an issue of high concern since the beginning of shared computers. As computers became more prevalent, so did resources shared between different users of computer systems, and naturally, users came to want to limit the access of other users to their own resources. To this end, many access control mechanisms have been devised whose general purpose are to allow access to ...