中英文外文翻译---变电站系统过电压防护技术(编辑修改稿)

中英文外文翻译---变电站系统过电压防护技术(编辑修改稿)内容摘要：

th, power lines and munication cables are very vulnerable to lightning attacks sensors, sensors along the overvoltage power lines and munication lines into one device, which will damage equipment, Therefore, the exchange of firstclass bus to install the power protection (B level) is to ensure the safety of the entire control room, and 80 percent of the overvoltage China, scattered to the earth, play a primary role in the protection, but are still in the exchange of feeder Some of the Blevel power supply voltage and mine the residual pressure increases online and must therefore be important in the exchange of feeder lines (DC charging screen, UPS, etc.) clevel power protection, which would curb overvoltage electrical equipment to backend To the level of tolerance. Protective location: It is 1 EC1312 (LEMP protection in the region of lightning protection principles. Arrester installation should be in different locations at the junction of protected areas, this work, the firstclass protection should be located in the bus exchange. In Two on the bus with the installation of a Bclass models of a threephase power supply voltage surge protector. Install Location: AC bus (cabi). secondclass protection measures to deal with For the more important feeder lines on the exchange of equipment, here for the DC charge screen, the installation of clevel threephase power arrester. As DC charging screen is twoway exchange of electricity supply, so the screen in the DC charge with the installation of two models of clevel threephase power supply overvoltage surge protector. Installation location should choose the DC charge screen open exchange of air power Commissioner Office. integrated automation system overvoltage protection Protective position: Computerbased integrated automation system39。 s ability to bear a very low voltage, several hundred volts of overvoltage is enough to damage the equipment, so must the high side arrester the residual pressure (thousands of volts) to further curb to meet equipment Insulation level of need, and because of the potential rise to power and the induction loop is also overvoltage line up on KV, to be used in the exchange of integrated automation system to the exchange on the clevel singlephase installation of a surge Voltage protection. Location should choose to install automatedping in the Composite Air switch the AC power. did not ask off power supplies (UPS) overvoltage protection Protection here: because of the internal puter systems, hubs, monitoring equipment, electric energy billing systems and so on through the UPS power supply protection, in order to protect the safety of these microelectronics equipment, the UPS power supply device in front of the installation of a cSurge Voltage protection. Optional models: The (UPS for singlephase power input) Cclass singlephase power surge or overvoltage protection (UPS for the threephase power input) of clevel threephase power supply overvoltage surge protector. Installation should choose the location of UPS into the front line. munication interface overvoltage protection Communication Interface overvoltage protection pared with the grid supply system, this overvoltage circuit on the degree of sensitivity is much higher, and these are overvoltage equipment in the circumstances it is very fragile. Equipment insulation tolerance level is very low. With the equipment connected to a signal line, data lines, measurement and control lines, and these are basically in line LPZOB region, but also through the LVZOA region, on the lines of sensors overvoltage relatively strong, according to the IEC test, when the electromagic field Strength increased to GS, will have a microputer equipment malfunction, loss of data. And the safety of these circuits is directly related to a system of safety equipment, so important to be on the interface circuit overvoltage protection. remote puter interface devices overvoltage protection Protective position: As substation puter remote installations scattered distribution structure. From remote m。