{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9804209","patent":{"patent_number":"US-9804209","title":"Monitoring an electrical power supply network","assignee":null,"inventors":[],"filing_date":"2012-02-29T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J","H02J","H02J","H02J","H02J"],"num_claims":11,"abstract":"A method and a device are provided for monitoring an electrical power supply network. A temporal frequency change value is determined for at least two sections or for at least two points of the power supply network. The frequency change value indicates the respective temporal frequency change of the network frequency. A conclusion is drawn regarding a possible islanding within the power supply network, and a warning signal which indicates the possible islanding within the power supply network is generated when the difference between the frequency change values, exceeds a predetermined frequency change threshold value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Monitoring an electrical power supply network","description":"A method and a device are provided for monitoring an electrical power supply network. A temporal frequency change value is determined for at least two sections or for at least two points of the power ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9804209","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9804209","citation_suggestion":"Patentable. \"Monitoring an electrical power supply network\" (US-9804209). https://patentable.app/patents/US-9804209","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9804209","json":"https://patentable.app/api/llm-context/US-9804209","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:00:04.626Z"}