PATENT CLAIM ANALYSIS

Application Number: 15763741
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["361", "042000"]

Abstract:
A control unit rod interface arrangement couples between AC and DC power systems. The interface includes at least two poles for coupling between the DC and AC power systems. Each of the poles includes a converter for conversion between AC and DC power. If a fault has occurred in one of the poles, a transient current, or fault current, may flow through a neutral bus line connected to the pole, the pole's converter and the location of the fault in the pole. Such a transient or fault current should preferably be damped out as quickly as possible, after which the pole may be electrically isolated from the other components of the interface arrangement. Such a transient or fault current may be damped out relatively quickly by opening of a neutral bus switching element of the neutral bus line connected to the pole after the converter has entered a blocking mode and a circuit breaker at the AC side of the converter has been opened so as to effect discontinuation of flow of current between the AC side of the converter and the AC power system.

Claim (Index 42):
A method for use in an interface arrangement configured to couple between alternating AC and direct DC current power systems, the interface arrangement including at least two poles for coupling of the DC power system to the AC power system and a ground electrode, wherein each of the at least two poles includes a converter for conversion between AC and DC power including a plurality of controllably switchable switching elements, the converter being configured to selectively be in a blocking mode in which the plurality of switching elements are not switched, the converter including a DC side for coupling of the converter to the DC power system and an AC side for coupling of the converter to the AC power system, a power transmission line and a power transmission line switching element included in the power transmission line for controllably and selectively electrically coupling the pole's converter with the DC power system, wherein the pole's converter is coupled to the DC power system via the power transmission line, and a circuit breaker arranged in a current path between the AC side of the converter and the AC power system and configured to controllably effect discontinuation of flow of current in the current path upon opening of contacts of the circuit breaker and controllably effect flow of current in the current path upon closing of the contacts, the interface arrangement further including, for each of the at least two poles, a neutral bus line connected to the pole for coupling the pole's converter to the ground electrode, and a neutral bus switching element included in the neutral bus line for controllably and selectively electrically coupling the pole's converter to the ground electrode, the method including, if a fault (F) is sensed in one of the poles:\n causing the converter of the pole to enter the blocking mode; causing the circuit breaker of the pole to open its contacts so as to effect discontinuation of flow of current in the current path; and causing the neutral bus switching element of the neutral bus line connected to the pole to disconnect the converter from the ground electrode, whereby any transient current generated by the fault is damped out; after the transient current has been damped out, causing the power transmission line switching element of the pole to disconnect the converter from the DC power.

Metadata:
- Claim Count in Document: 71.0
- Percentile: 90.0
- Lexical Diversity: 2.40244
- Patent Class: 361.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['12161363', '12161380', '12161390', '15518626', '15532386']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8491182303563749
- 35 USC 102 Novelty (BERT): 0.51248612168857
- Combined Prediction Score: 0.8154550194895944
- Mean Citation Score: 296.1162040000001
- Max Citation Score: 308.74646
- Similarity Product: 265.0059844671058

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test