Method for solving for converter valve states and valve currents based on valve-side current timing characteristics
US12126246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2021 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Sep 30, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a calculation method for a converter valve state and a valve current based on temporal features of a valve side current, the process is follows: collecting three-phase AC currents, DC currents on a valve side of a converter of a DC transmission system, and trigger pulses of converter valves; establishing a node current equation of the AC currents and valve currents; when detecting a rising edge of a trigger pulse of a converter valve, latching the number of the converter valve; according to the trigger pulses of the converter valves, and amplitude characteristics of the AC currents and characteristics of AC variations, to perform a conducting state and a blocking state judgment of valve states, and obtaining valve states; judging whether each phase has a bypass state; through summing the valve bypass states of the three phases to judge a number of bypass phases; supplementing bypass loop voltage equation; calculating the converter valve currents; when the calculated value of the valve currents is negative, the valve state is corrected to blocking state according to a one-way conductivity of the converter valves, otherwise do not correct; repeating th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.