Loading...
Please wait, while we are loading the content...
Similar Documents
Algorithms for digital protection
| Content Provider | Scilit |
|---|---|
| Author | Ungrad, Helmut Winkler, Wilibald Wiszniewski, Andrzej |
| Copyright Year | 2020 |
| Description | The algorithms used in protection usually conform to one of the two typical structures shown in Fig. 12.1. The first (Fig. 12.1a) is based on the fact that the values of the input variables and their mutual relationships (e.g. amplitudes, frequencies and the real and apparent powers) are determined numerically. The resulting signals are processed to ascertain whether their amplitudes exceed a set limit (pick-up value), or the amplitude of one is greater or less than another, or whether the tripping condition defined by the operating characteristic of an impedance relay is fulfilled. In the subsequent parts of the structure, the logical relationships between the signals are supervised. The processes of the digital structure differ from those of the analogue structure in the respect that the input variables are measured and the internal signals processed digitally. Fig. 12.1 Typical structures of measurement algorithms for protection applications Book Name: Protection Techniques in Electrical Energy Systems |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2006-0-06588-3&isbn=9781003067504&doi=10.1201/9781003067504-15&format=pdf |
| Ending Page | 346 |
| Page Count | 44 |
| Starting Page | 303 |
| DOI | 10.1201/9781003067504-15 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2020-08-18 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Protection Techniques in Electrical Energy Systems Instrumentation Input Variables Typical Structures |
| Content Type | Text |
| Resource Type | Chapter |
