Single-phase-to-ground protection method and system for active power distribution network
US12381390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Aug 29, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/0012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a single-phase-to-ground protection method and system for an active power distribution network. The method includes: acquiring current and voltage data of a line in real time by means of a power distribution terminal, and calculating active power of the line; recording and storing the active power of the line to form an active power curve; performing data statistics according to the active power curve; calculating a direction compensation coefficient and a zero-sequence current compensation coefficient on the basis of statistical data; and detecting whether a single-phase-to-ground fault occurs to the line, where when the single-phase-to-ground fault occurs to the line, a transient-state zero-sequence direction and a steady-state zero-sequence direction are compensated, or a zero-sequence current is compensated, it is determined that the single-phase-to-ground fault occurs to the line when compensation results satisfy action conditions, and tripping is performed or an alarm is given.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.