Sampling synchronization method for differential protection device, differential protection device and system
US-2025155479-A1 · May 15, 2025 · US
using pilot wires or other signalling channel
using pilot wires or other signalling channel · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H3/30 |
| Official title | using pilot wires or other signalling channel |
| Display label | using pilot wires or other signalling channel |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 5 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Protective device with multi-channel line current differential protection
US-2025141205-A1 · May 1, 2025 · US
Method and system for protecting an electrical distribution network comprising at least two sources of electrical energy
US-2024305090-A1 · Sep 12, 2024 · US
Time synchronization between IEDs of different substations
US-12003087-B2 · Jun 4, 2024 · US
Differential protection device and protection system for monitoring objects to be protected in a power supply network
US-11909194-B2 · Feb 20, 2024 · US
Differential protection determination method
US-11764568-B2 · Sep 19, 2023 · US
System and method for protection of an electrical grid
US-11705723-B2 · Jul 18, 2023 · US
System and method for protection of an electrical grid
US-2023129205-A1 · Apr 27, 2023 · US
Time synchronization between ieds of different substations
US-2023077975-A1 · Mar 16, 2023 · US
Differential protection device and protection system for monitoring objects to be protected in a power supply network
US-2022311232-A1 · Sep 29, 2022 · US
Power control system and control device for restoring AC system from power failure
US-11201461-B2 · Dec 14, 2021 · US
Differential protection determination method
US-2021344190-A1 · Nov 4, 2021 · US
Arc fault detection with sense wire monitoring
US-11016133-B2 · May 25, 2021 · US
Connector protection method and system
US-10998683-B2 · May 4, 2021 · US
Method of operation a differential protection scheme
US-10749335-B2 · Aug 18, 2020 · US
Arc fault detection with sense wire monitoring
US-2020191853-A1 · Jun 18, 2020 · US
Power control system and control device
US-2020161852-A1 · May 21, 2020 · US
Method, device and system for determining the fault location of a fault on a line of an electrical energy supply network
US-10598717-B2 · Mar 24, 2020 · US
Differential protection method and differential protection device for performing a differential protection method
US-10530146-B2 · Jan 7, 2020 · US
Overcurrent element in time domain
US-10522995-B2 · Dec 31, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H3/30?
- CPC H02H3/30 is the Cooperative Patent Classification code for “using pilot wires or other signalling channel.”
- How many patents are filed under CPC H02H3/30 (using pilot wires or other signalling channel)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC H02H3/30 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).