Abstract
Along with the construction of intelligent substation, the field installation of secondary intelligent devices becomes a trend. The distance from field installation intelligent secondary devices to the disturbance source is nearer, so the intelligent devices suffer greater electromagnetic disturbance. After the abnormal phenomenon of the 110kV intelligent substation merging unit happened, the electromagnetic compatibility experiments are carried out and the structure of the merging unit is improved. To quantitatively analyze the intensity of electromagnetic disturbance to merge units, the electromagnetic transient disturbance signal of the 110kV substation and 500kV substation which caused by switching operation is measured and recorded. The characteristics of amplitude and time-frequency of the recorded electromagnetic transient disturbance signal are analyzed. Based on the electromagnetic compatibility experimental results and the characteristics of disturbance signal, the applicability of current domestic electromagnetic compatibility immunity experimental standard is analyzed. It is pointed out that the current standard is not adequate to examine the field installed intelligent equipment. Finally, this paper puts forward some suggestions about improving the electromagnetic compatibility performance of merging unit.
| Original language | English |
|---|---|
| Pages (from-to) | 454-462 |
| Number of pages | 9 |
| Journal | Diangong Jishu Xuebao/Transactions of China Electrotechnical Society |
| Volume | 29 |
| State | Published - 1 Dec 2014 |
| Externally published | Yes |
Keywords
- EMC (electromagnetic compatibility)
- Field installed
- Immunity
- Intelligent substation