{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JW76WY7HH7S5EY5XMW7FIJ4DMI","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":"a8e44e78accc613f4347c4818b3cb6c29db91d4a8aa1b685ab968bc4b23e2c40","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-10-11T03:21:18Z","title_canon_sha256":"e1ffde92c6cfeb410b067cd1d56e4d9223d5b81c480adc495a7c0025a31952ac"},"schema_version":"1.0","source":{"id":"1910.04954","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.04954","created_at":"2026-07-05T00:11:37Z"},{"alias_kind":"arxiv_version","alias_value":"1910.04954v2","created_at":"2026-07-05T00:11:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.04954","created_at":"2026-07-05T00:11:37Z"},{"alias_kind":"pith_short_12","alias_value":"JW76WY7HH7S5","created_at":"2026-07-05T00:11:37Z"},{"alias_kind":"pith_short_16","alias_value":"JW76WY7HH7S5EY5X","created_at":"2026-07-05T00:11:37Z"},{"alias_kind":"pith_short_8","alias_value":"JW76WY7H","created_at":"2026-07-05T00:11:37Z"}],"graph_snapshots":[{"event_id":"sha256:a3e9c8da6ff75a82d0ddf6ee87a91967213e0c4be83e8599d432921c921c39a8","target":"graph","created_at":"2026-07-05T00:11:37Z","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/1910.04954/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Transient frequency dips that follow sudden power imbalances --frequency Nadir-- represent a big challenge for frequency stability of low-inertia power systems. Since low inertia is identified as one of the causes for deep frequency Nadir, virtual inertia, which is provided by energy storage units, is said to be one of the solutions to the problem. In the present paper, we propose a new method for frequency control with energy storage systems (ESS), called dynamic droop control (iDroop), that can completely eliminate frequency Nadir during transients. Nadir elimination allows us to perform fre","authors_text":"Eliza Cohn, Enrique Mallada, Petr Vorobev, Yan Jiang","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-10-11T03:21:18Z","title":"Dynamic Droop Approach for Storage-based Frequency Control"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.04954","kind":"arxiv","version":2},"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":"sha256:82b82ec573199fb3de5581e4d0aef8406730316bcc47f26b708002237550cc14","target":"record","created_at":"2026-07-05T00:11:37Z","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":"a8e44e78accc613f4347c4818b3cb6c29db91d4a8aa1b685ab968bc4b23e2c40","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2019-10-11T03:21:18Z","title_canon_sha256":"e1ffde92c6cfeb410b067cd1d56e4d9223d5b81c480adc495a7c0025a31952ac"},"schema_version":"1.0","source":{"id":"1910.04954","kind":"arxiv","version":2}},"canonical_sha256":"4dbfeb63e73fe5d263b765be54278362051be1583eba23b9a5d6a1973eaec4ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4dbfeb63e73fe5d263b765be54278362051be1583eba23b9a5d6a1973eaec4ca","first_computed_at":"2026-07-05T00:11:37.788478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:11:37.788478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P4xWFgzbrCabGqYh3UdGr95GGvSubLOdc6VO229e2UK6YiEAEDMPvwSSsTwl2f52efqyiP2BG87RUlE1Ouj+AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:11:37.788894Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.04954","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82b82ec573199fb3de5581e4d0aef8406730316bcc47f26b708002237550cc14","sha256:a3e9c8da6ff75a82d0ddf6ee87a91967213e0c4be83e8599d432921c921c39a8"],"state_sha256":"e52fcf38a11c21eb0f707a7b7de4bd029c0daebb7c3753c3ccae00307e280553"}