Relay
The Study of Relay Setting Calculation with A Foreign City Power Network
In recent years, with the development of economic and technique, there are more and more overseas projects. In order to let relay give full play for those power system, it is necessary to do research with the relay setting calculation of foreign network and apply support. Due to tradition and experience, each country has its [...]
Design and Research on Smart Relay Measuring System Base on ARM
Relay plays an important role in various fields of national economy, especially in industry control board. For a relay, whether it can work well and truly is an important guide line to its reliability. The contacts act right or not can be decided by analyzing the contact voltage drop of relay, which is a key [...]
Analysis of Power System Reliability Based on Hidden Failures of Protective Relayings
This paper analyzes three existing hidden failure models, proposes a new hidden failure model considering repairable hidden failure, aging hidden failure and the hidden failure caused by adverse environment. Using the DC power flow algorithm to assess the risk of power system cascading failure, to find out the key-lines, on this basis the preventive measures [...]
Development of an Electro-thermal-driven MEMS Relay
Micro-electro-mechanical systems (i.e., MEMS) are integrated systems of microelectronics (IC), micro-actuator and, in most cases, micro-sensors. MEMS and related technologies make it possible the miniaturization and integration of optical, electronic, magnetic and thermal functional devices, and they have enabled successful demonstration of novel sensors, actuators, and systems in many diverse application areas.MEMS relay is a [...]
The Research of the Fault Signal Monitoring System of Relay Circuit
In China, power has become a daily necessity, the lives of people everywhere can not do without electricity, not only in life, but also in the development of our national economy, electricity is an extremely important role in the protection and support. With the rapid development of economy and improvement of people’s life, power is [...]
Characteristics Analysis and Detection Technology of the Second Pick-Up of Electromagnetic Relay
Relay is a kind of auto control apparatus, which is acted with the special input signal. As the relay is widely used in many kinds of control systems, in order to ensure these systems’reliability and security, we must do a high efficient, objective and full-scale test. Among them, the second pick-up of electromagnetic relay is [...]
Fabrication Technology and Characteristic of A New Type Mems Bi-stable Electromagnetic Relay
Micro relays as a kind of components are widely used and plays an essential role in the fields of aerospace, computer and communication. Communication relay is one of the main applications, its output value accounts for about a quarter of the entire relay industry, and it has more technical content and higher added value of [...]
Study on the Condition-based Maintenance of Substation Relay Protection
With the rapid development of power grid, power equipment, with increasing number of species, the power companies pay more attention to the interests of the enterprise, focusing on the optimal allocation of its resources to pursue the maximization of corporate profits, the cost of the equipment, increasing maintenance costs pressure, maintenance of the traditional way [...]