Main Sector of relevance\IRC classification 6. Energy

6.6 DST-1М device for diagnostics of supply transformers

Developers’ contact information

State Scientific Institution “The Institute of Applied Physics of the National Academy of Sciences of Belarus”
16 Akademicheskaya Street, Minsk BY-220072

Summary

The device is used for measurement, calculation and analysis of open-circuit transformer characteristics that give objective information about the technical condition of a unit.

Description

The device makes it possible to carry out supply transformer tests under operation conditions, e.g. in railway main supply lines, as well as upon their manufacturing and repairs.
Functionally, this device makes it possible to carry out:
- measurement of three effective voltage values;
- measurement of three effective current values;
- calculation of zero-sequence current;
- calculation of out-of-phase current ratio;
- measurement of angles between current and voltage in each phase;
- measurement of active, reactive and total power per each phase;
- calculation of power factor per each phase;
- measurement of overall resistive, reactive and total losses in the three phases;
- carrying out of harmonic current analysis on each phase;
- measurement of high-frequency component value (over 50 kHz) at excitation current curves;
- storage and the possibility to review the diagnostics results in nonvolatile memory;
- measurement results transfer to PC via RS232 interface.
Measurement range:
- measured voltage range: 10 – 250V (effective value),
with two subranges: 10 - 110 V, 110 - 250 V;
- measured current range: 0.015 – 5 A (effective value),
with three subranges: 0.015-0.08 A, 0.08 – 0.5 A; 0.5 – 5 A;
- range of measured active, reactive and total power per each phase, kW (kVA reactive, kVA): 0.00015 – 1.25;
- range of measured active, reactive and total power, cumulative value of three phases, kW (kVA reactive, kVA): 0.00045 – 3.75;
- range of measured phase difference between current and voltage values, deg: 0 – 360.

Technology type

• Other:
  Device.

Technical advantages and economic benefits

High informativity, the possibility to carry out effective periodic tests of supply transformers under operation conditions.

Technology differentiation and uniqueness

New techniques of multimedia information processing are being worked out that provide high confidence of test results.

Context in which technology was identified

The devices are used at 7 electrical supply directions of the Belarusian railway.

Technological keywords

Supply transformers, off-load electrical parameters.

Development Stage

• Other:
  The devices are made according to the concluded contracts; included in the State Register of measuring tools of the Republic of Belarus.

Intellectual property rights

• Exclusive right

Range of applications

Electric-power industry.

Classifier Used at the EU Innovation Relay Centres

• Energy

Preferable Regions

• Europe
• Asia

Practical experience

The device is used at electrical energy enterprises.

Environmental impact

None.

Type of collaboration sought

• Other:
  Agreement on transfer of sci-tech production; etc.

Terms and restrictions

On a contract basis.

Available technical assistance

• Documentation
• Personnel