Power transformer is one of the most important electrical equipments in the high-pressured power transmission and transformer system. In order to guarantee the safe operation of the electric Power system, the study of transformer on-line condition monitoring and fault diagnosis technology could find the potential faults of the transformer earlier. It is of great significance
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The paper first introduces the concept classification and other basic contents of the power quality, analyzes the development status of power quality monitoring device at home and abroad. After that,it explains the definitions of the 5 major power quality indices–voltage deviation,frequency deviation,harmonics,ltage fluctuation and flicker,three-phase voltage unbalance factor. The paper also summarizes the monitoring theories
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As an important part of smart transmission line, Dynamic Line Rating(DLR) can improve the utilization of transmission equipment and help the operator to know the current operation status of transmission line. DLR technology was the most economical and most environmentally friendly technology to improve transmission capacity and solve the transmission bottleneck.This paper systematically explain the
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With the development of smart grid, remote medical service and cloud computation, copper cables will finally be replaced by optical fibers. Nowadays, Passive Optical Network (PON), especially Ethernet Passive Optical Network (EPON), becomes more and more popular due to its high bandwidth, high reliability and low cost, which make it one of the most suitable
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With the economic globalization and the sustained growth of logistics the port lifting equipment is becoming larger, heavier and faster accordingly which made a new demand for the port lifting equipment monitoring system, no longer simply stay on the correctly control and running, but comprehensively acquire the information of equipment operating posture, operating status and
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Notoriously, the operation safety of the power network requires the power equipments always keep reliable. However, due to the effect of lighting strike, temperature and inside overvoltage, the insulation system of the equipments is gradually aging which can cause the equipments partial discharge. Without any restoration measure afterwards, a destructive breakdown would occur in the
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In recent years, our country has proposed the building of Smart Power Grid.The construction of smart substation is an important part of the Smart Grid intelligent substation is the foundation of the intelligent network. The construction of Smart Substation consists of two parts.First, the construction of intelligent substation; The second is through the intelligent transformation
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In recent years, our country has proposed the building of Smart Power Grid.The construction of smart substation is an important part of the Smart Grid intelligent substation is the foundation of the intelligent network. The construction of Smart Substation consists of two parts.First, the construction of intelligent substation; The second is through the intelligent transformation
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With the Complicate the structure of the electric power system, capacity expansion, development of voltage and high pressure, on power system security and reliability requirements are increasingly high, at the same time because of the particularity of the high-voltage transmission lines, the geographical environment in which is part of the transmission line and does not
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Temperature is an important parameter of power system .Most faults of the power system can cause the unusual rising of temperature at some key positions .On the other hand, high temperature can cause the drop of performance of system components, and even the damage of equipment of electric power system. These can seriously affect the
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