变电运行名词解释（Explanation of substation operation terms）First, the explanation questionA, safety knowledge1, 2 the so-called use of electrical equipment -Means all electrical equipment with voltage or part of the voltage and one operation with voltage.2, 2 all power failure work -All the high-voltage equipments in the room were cut off, all the doors close to the high voltage room were locked, and the outdoor high-voltage equipment was all cut off.3, 2 part of the work of power failure -The high voltage equipment is partially cut off, or the whole room is power cut, but the door to the adjoining high voltage room is not locked.4, 2 no power work -1. the work itself does not require power interruption and the risk of accidentally touching the conductive part; 2. the work permitted on the enclosure of the charged equipment or on the conductive part.5, 3 the basic principles of emergency ambulanceTake active measures to protect the wounded life, reduce the injury, reduce the pain, and quickly contact the medical department for treatment according to the injury needs.6, 3 re judgment in the rescue processAfter blowing for 1 minutes, the method of watching, listening and testing was used to determine whether the respiration and heartbeat of the wounded recovered or not in 5-7 seconds.7 、 3 basic principles of trauma emergencyFirst rescue, then fixed, then carry, and pay attention to take measures to prevent injury aggravation or pollution. If the patient needs to be sent to hospital for treatment, immediate measures should be taken to protect the wounded and send them away to hospital for treatment.8, 2 accident investigation three do not let go!The cause of the accident is not clear, the accident liability and the educated should not be spared, and no preventive measures should be taken.9 、 1 personal slight injury accidentBecause of injury for a working day are full.10, 2 unplanned overhaul -Plan everything outside maintenance overhaul, maintenance and repair plan holiday (not including the switch for repeatedly cut off the fault current after the internal inspection).B, job related knowledge126, 2 25 transformer oil -No. 25 transformer oil: the freezing point of insulating oil for the oil - 25 DEG C, known as the No. 25 transformer oil.127 、 3 short circuit voltageShort circuit voltage: two transformer winding short circuit in the primary winding and two winding voltage to current reaches the rated value, the voltage of the primary winding and the value of the ratio of the percentage and the rated voltage value, called short circuit voltage (or impedance percentage) percentage.128, 5 - defluctionDefluction: refers to the meter relay only in voltage or current coil is energized, the relay cylinder output torque caused by rotation of the movable system called creeping.129, 1 conductorConductor: an object with good electrical conductivity is called a conductor.130, 1 insulators -Insulator: an object that cannot conduct charges is called an insulator.131, 2 semiconductors -Semiconductor: a class of objects that are electrically conductive between conductors and insulators, called semiconductors.132, 2 valence electronValence electrons: electrons in the outermost layer of the nucleus are called valence electrons.133, 3 free electronFree electron: the valence electrons are bound by the energy of the external energy and become the electrons of the free motion.134, 3 intrinsic semiconductors - -Intrinsic semiconductors: pure germanium and pure silicon are semiconductors called intrinsic semiconductors.135, 2 cavity -Hole: when the valence electrons become free electrons, a vacancy left in the original covalent position is called a hole.136, 3 P type semiconductor -P type semiconductor: a small amount of boron is incorporated into the intrinsic semiconductor material, and the hole is the majority carrier, which is called P type semiconductor.137, 3 N type semiconductor -N type semiconductors: a small amount of phosphorus is incorporated into the intrinsic semiconductor material, and free electrons are the majority carriers,This type of semiconductor is called N semiconductor.138, 2 PN junctionPN junction: P and N type semiconductor organic combination, at the junction of the surface, forming a space charge area, called PN junction.139, 2 rectification -Rectification: the process of changing alternating current into unidirectional pulsating current by means of the single phase conductivity of the diode.140, 2 filter -Filtering: to remove the AC component in the pulsating DC, so that the waveform becomes flat, this process is called filtering.141, 4 DC current amplification factor C beta -DC amplification factor beta