A test system and method for short circuit capacity of distribution transformer
A distribution transformer and test system technology, applied in the field of electric power, can solve the problems of high voltage level at the grid access point, great influence on the power quality of the grid, and high cost, so as to facilitate transportation and on-site placement, improve test quality and Efficiency, solve the effect of large movement dispersion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 1
[0088] Select a 10kV distribution transformer, the product model is S9-30 / 10. Produced by Zhangjiakou Longyin Electric Co., Ltd. and put into operation in 2017. The product has been in operation so far, and has not experienced any major accidents. The operation is in good condition, and all factory tests and routine test indicators are at normal levels.
[0089] The test takes the form of short circuit on the low voltage side (short circuit first), pressurization on the high voltage side (pressurization later), and is carried out phase by phase according to the wiring of the single-phase test circuit.
[0090] Phase A short circuit test steps (take 30kVA as an example):
[0091] ① Under the minimum voltage tap, apply 30% of the rated short-circuit current, that is, 13.7A, for 0.5s, and conduct the test once;
[0092]② Under the minimum voltage tap, apply 50% of the rated short-circuit current, that is, 22.8A, for 0.5s, and conduct the test once;
[0093] ③ Under the minimum...
specific Embodiment approach 2
[0113] Select a 315kV distribution transformer, the product model is S11-M-315 / 10. Produced by Hebei Tongyu Transformer Manufacturing Co., Ltd., it was put into operation in 2014. So far, the product has not experienced any major accidents, and the operation is in good condition. The indicators of the factory test and routine test are all at normal levels. The energy storage type virtualized ideal power supply is used for the short-circuit withstand test.
[0114] Before the test, carry out the relevant test data test and hang the iron core for inspection, and make identification marks.
[0115] The test takes the form of short circuit on the low voltage side (short circuit first), pressurization on the high voltage side (pressurization later), and is carried out phase by phase according to the wiring of the single-phase test circuit.
[0116] According to the test plan, carry out the short-circuit withstand test, Figure 5 It is the test waveform of the first test voltage a...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com