1.1.Surge protection in networks with isolated
neutral 6-35 kV
Dates - from April 19 to April 23
№ |
Section names |
Watch |
||
---|---|---|---|---|
Total |
Lectures |
Practice |
||
1 |
Requirements of the Rules of Technical Operation of Electric Power Stations and Networks |
1 |
1 |
|
2 |
Causes of damage to electrical installations. The degree of danger of ground faults depends on the efficiency of neutral grounding. |
2 |
2 |
- |
3 |
Single-phase earth faults in 6 - 35 kV distribution networks. Compensation of capacitive earth fault currents. |
2 |
2 |
- |
5 |
Main characteristics of networks with isolated neutral and capacitive current compensation |
2 |
2 |
- |
6 |
Arc extinguishing coils, their purpose, power selection and installation location |
2 |
2 |
- |
7 |
Switching circuits of arc-extinguishing coils and alarm systems |
2 |
2 |
- |
8 |
Preparing the network for switching on the arc-extinguishing coils |
2 |
2 |
- |
9 |
Selecting arc extinguishing coil settings |
2 |
2 |
- |
10 |
Measurements in networks operating with isolated neutral and current compensation |
2 |
2 |
- |
11 |
Programs for measuring capacitive currents of single-phase earth fault, unbalance voltage, neutral bias voltage |
2 |
- |
2 |
12 |
Method of measuring the direction of the asymmetry vector in air networks using the VAF-85 device |
1 |
1 |
- |
13 |
Example of calculating the network unbalance voltage and phase capacitance alignment. |
2 |
- |
2 |
14 |
Method for estimating the neutral bias voltage from the phase voltage skew in the 35 kV network |
2 |
2 |
- |
15 |
Standard instructions for compensation of the capacitive earth fault current in electrical networks of 6-35 kV. RD 34.20.179 (TI 34-70-070-87). |
2 |
- |
2 |
16 |
Actions of operational personnel in determining the location of a single-phase earth fault |
2 |
2 |
- |
17 |
Methods of fault detection - single-phase earth faults in a compensated 35 kV network |
2 |
2 |
- |
18 |
Methods of neutral grounding in 6 - 35 kV networks |
2 |
2 |
- |
19 |
Plunger arc-quenching reactors ZTC and ASR |
2 |
2 |
- |
20 |
Resistive neutral ground in 6 - 35 kV networks with SPE cables |
2 |
2 |
- |
|
TOTAL |
36 |
30 |
6 |