REPORT on pre-diploma practice Electric Networks

REPORT on pre-diploma practice Electric Networks

Report on the pre-diploma practice Tomsk Polytechnic University Institute of Electrical Engineering

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Additional information:

1. General guidelines for the testing of electrical equipment
2. Power Transformers, autotransformers and reactors, oil
2.1. Insulation resistance measurement
2.1.1. Measuring the insulation resistance of the windings
2.1.2. Insulation resistance measurement available tie rods, bands, yoke semi and the press rings relative to the active steel yoke beams and yoke beams relative to the active steel and electrostatic screens with respect to the magnetic core and windings
2.2. Measurement of the dielectric loss tangent (tg δ) of winding insulation
2.3.Otsenka condition of the paper insulation windings
2.3.1. Based on the presence of furan compounds in oil
2.3.2. Based on the degree of polymerization
2.4. Insulation test high voltage frequency of 50 Hz
2.4.1. Test of winding insulation with entries
2.4.2. Insulation test of protective circuits, control - measuring equipment installed on the transformer
2.5. Check the transformation ratio
3. Oil and electromagnetic switches
3.1. Insulation resistance measurement
3.1.1. Measurement of insulation resistance and the movable guide parts made of organic materials
3.3. Insulation test high voltage frequency of 50 Hz
3.3.1. Test bearing insulation and the switch relative to the housing.
3.4. Measuring DC Resistance
3.4.1. Resistance measurement circuit current-carrying contact system
3.5. Measurement speed and temporal characteristics of switches
3.6. Tests of transformer oil switch

4. disconnectors, isolating and short-
4.1. Measuring DC resistance
4.1.1. Measuring the resistance of the contact system disconnectors and separators
4.2. Testing the isolator, isolating and short-

5.Vyntelnye arresters and surge arresters
5.1. Measuring resistance arresters and surge arresters
5.2. Measurement of the conduction current overvoltage

6. Earthing
6.1. Resistance measurement of grounding devices of power plants, substations and transmission lines
7. Power cable lines
7.1. Insulation resistance measurement
7.2. Test cable insulation high DC voltage
7.2.1. The test voltage, test duration, leakage currents and asymmetry
7.3. Determination of resistance of cable cores
7.4. Determination of electrical cables working capacity
7.5. Test plastic sheath cables for voltage of 110 kV and above high DC voltage
8. Overhead lines