{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:3PSIAYQS6U4GYWU56C7V5DVVFC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0727739c0acd54559de490b94e8b51913afc25f543be58866efc6315fe190ccf","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2024-08-01T12:37:47Z","title_canon_sha256":"6eaac18d6ae762d1ba6aabfdd6aa99afe73c7c1b5a536f169abec73175357401"},"schema_version":"1.0","source":{"id":"2408.00511","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.00511","created_at":"2026-07-05T08:51:04Z"},{"alias_kind":"arxiv_version","alias_value":"2408.00511v1","created_at":"2026-07-05T08:51:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.00511","created_at":"2026-07-05T08:51:04Z"},{"alias_kind":"pith_short_12","alias_value":"3PSIAYQS6U4G","created_at":"2026-07-05T08:51:04Z"},{"alias_kind":"pith_short_16","alias_value":"3PSIAYQS6U4GYWU5","created_at":"2026-07-05T08:51:04Z"},{"alias_kind":"pith_short_8","alias_value":"3PSIAYQS","created_at":"2026-07-05T08:51:04Z"}],"graph_snapshots":[{"event_id":"sha256:b9dcfa0ab4d41d6177dbb4f6bcd737ce90ae4083103120a216acc30f5849192a","target":"graph","created_at":"2026-07-05T08:51:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2408.00511/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the increasing integration of inverter-based resources into the power grid, there has been a notable reduction in system inertia, potentially compromising frequency stability. To assess the suitability of existing area inertia estimation techniques for real-world power systems, this paper presents a rigorous comparative analysis of system identification, measurement reconstruction, and electromechanical oscillation-based area inertia estimation methodologies, specifically applied to the large-scale and multi-area WECC 240-bus power system. Comprehensive results show that the system identi","authors_text":"Bendong Tan, Jiangkai Peng, Jin Tan, Junbo Zhao, Ningchao Gao","cross_cats":["cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2024-08-01T12:37:47Z","title":"Comparative Study of Data-driven Area Inertia Estimation Approaches on WECC Power Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.00511","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6ffa40e132b96ca721a6e38c7afce4dcf9377a6f5a708e580a524662a33dc0ef","target":"record","created_at":"2026-07-05T08:51:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0727739c0acd54559de490b94e8b51913afc25f543be58866efc6315fe190ccf","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2024-08-01T12:37:47Z","title_canon_sha256":"6eaac18d6ae762d1ba6aabfdd6aa99afe73c7c1b5a536f169abec73175357401"},"schema_version":"1.0","source":{"id":"2408.00511","kind":"arxiv","version":1}},"canonical_sha256":"dbe4806212f5386c5a9df0bf5e8eb52882bdc5c56a32eb70826f8ee99a568075","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dbe4806212f5386c5a9df0bf5e8eb52882bdc5c56a32eb70826f8ee99a568075","first_computed_at":"2026-07-05T08:51:04.889909Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:51:04.889909Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VK5naeFiJUlpaA3IBYWkXG+npC3pHjetklyZyd9YUlU2+E/N+SNrYmTvP6P4j44Kw56ZX0Oagmu641UNaNr+Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:51:04.890281Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.00511","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ffa40e132b96ca721a6e38c7afce4dcf9377a6f5a708e580a524662a33dc0ef","sha256:b9dcfa0ab4d41d6177dbb4f6bcd737ce90ae4083103120a216acc30f5849192a"],"state_sha256":"d845ce62a77e0b06c1408a78369c527e0d7cdbf92a2a7010c4a6490b804ed816"}