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AC Resonant Test System

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SXBP-1540KVA/110KV/220KV/400KV Variable Frequency AC Series Resonant Test System

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Test Object and Requirement:

The system is specially designed for AC withstand voltage test for below items, with below specifications and requirements.

Test Object

Specifications

Test Frequency

Test Voltage

Test Time

Power cable

220kV/400mm2/1000m

Capacitance ≤0.125μF

30-300Hz

≤218kV

1 hour

Power Transformer

220KV 120MVA

Capacitance ≤0.03μF

30-300Hz

≤335kV

1 min

220KV GIS, HV switchgear, CT/PT

Capacitance ≤0.025μF

30-300Hz

≤385kV

1 min

110KV Power Transformer, GIS, HV switchgear, CT/PT

Capacitance ≤0.02μF

30-300Hz

≤270kV

1 min

35KV Power Transformer, GIS, HV switchgear, CT/PT

Capacitance ≤0.02μF

30-300Hz

≤108kV

1 min

 

Capacity Determination of the equipment:

1.    220kV/400mm2 cable, 1km, capacitance≤0.125uF, test frequency 30-300Hz, test voltage 218kV.

       Test current I=2πfCUtest=2π×38×0.125×10-6×218×103=6.5A(f=35Hz)

       4pcs reactors will be designed, two reactors in series then two in paralleled, the output: 220KV/7A.

 

2.    220kV/120MVA transformer, capacitance≤0.03uF, test frequency 30-300Hz, test voltage≤335kV

       Test current I=2πfCUtest=2π×45×0.03×10-6×335×103=2.8A(f=45Hz)

       4pcs reactors are in series, each reactor is 440kV/3.5A.

 

3.    220kV GIS, switchgear, CT/PT, capacitance≤0.025uF,test frequency 30-300Hz, test voltage≤385kV

       Test current I=2πfCUTest=2π×45×0.025×10-6×385×103=2.7A(f=45Hz)

       4pcs reactors are in series, each reactor is 440kV/3.5A.

 

                                                                         Specification

Test Object

Reactor

385kVA/110KV 4 pieces

Exciting transformer output

Transformer

(Test voltage 335kV)

220KV/120MVA

4 pcs reactors in series

20kV

220kV/400mm2 Cable

(Test voltage 218kV)

1000m

2 pcs reactors in series, then 2 groups in paralleled

10kV

GIS,Switchgear,CT/PT

(Test voltage 385kV)

220KV

4 pcs reactors in series

20kV

 

No.

Name

Module No. & Specs

Quantity

1

Exciting Transformer

SXJB-80kVA/2.5kV/5kV/10kV/20kV/0.5kV

1 set

 

2

 Variable frequency power supply

SXBP-80kW/380V

1 set

3

HV Reactor

SXDK-385kVA/110kV

8 pcs

4

Capacitive Divider

SXFR-400 kV -1000 pF

1 set(3 pcs in series)

5

Connecting Cable

Accessories are as Table I.

1 set

6

Factory Test Report

 

1 copy

7

User's Guide

 

1 copy

Please contact Sansion Power: sansionpower@hotmail.com for further information.