{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:MBUYQD2DFSJWFDD4ZAAXADRWUH","short_pith_number":"pith:MBUYQD2D","canonical_record":{"source":{"id":"1709.01543","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2017-09-05T18:33:13Z","cross_cats_sorted":[],"title_canon_sha256":"117a04354fd47a7d09829de1a8e46954b75699ad5d7769e91e58f588e6246d5c","abstract_canon_sha256":"fc7e344fdd935ce8a0c7ee82c4a792af18a7444996dfebac79bd23a42c9456cf"},"schema_version":"1.0"},"canonical_sha256":"6069880f432c93628c7cc801700e36a1f655040454741f7463c8f6392454dd24","source":{"kind":"arxiv","id":"1709.01543","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01543","created_at":"2026-05-18T00:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01543v3","created_at":"2026-05-18T00:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01543","created_at":"2026-05-18T00:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"MBUYQD2DFSJW","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MBUYQD2DFSJWFDD4","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MBUYQD2D","created_at":"2026-05-18T12:31:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:MBUYQD2DFSJWFDD4ZAAXADRWUH","target":"record","payload":{"canonical_record":{"source":{"id":"1709.01543","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2017-09-05T18:33:13Z","cross_cats_sorted":[],"title_canon_sha256":"117a04354fd47a7d09829de1a8e46954b75699ad5d7769e91e58f588e6246d5c","abstract_canon_sha256":"fc7e344fdd935ce8a0c7ee82c4a792af18a7444996dfebac79bd23a42c9456cf"},"schema_version":"1.0"},"canonical_sha256":"6069880f432c93628c7cc801700e36a1f655040454741f7463c8f6392454dd24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:45.425725Z","signature_b64":"n2OKWJRTCRm4LsR40WqJrinCCDUn8mrzMxWaa0DbWQY00LZY8VUUqN8tDMGihCykccKgt15LmFk8dMZNMtvjDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6069880f432c93628c7cc801700e36a1f655040454741f7463c8f6392454dd24","last_reissued_at":"2026-05-18T00:23:45.425119Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:45.425119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.01543","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sxXzp9+lHnCcx1l+HHNNMVUMe+yr2onuKeF0/8UbtGUs9kIKGiYa8MIxwER5PdrWkaOIU5dBpwcXYpwhyrpGDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:01:45.711794Z"},"content_sha256":"745d66a52de3ec5f012f4017da76ac74b9b94c7f65e5f5ec61452f01e8706d19","schema_version":"1.0","event_id":"sha256:745d66a52de3ec5f012f4017da76ac74b9b94c7f65e5f5ec61452f01e8706d19"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:MBUYQD2DFSJWFDD4ZAAXADRWUH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Distributed Optimal Frequency Control Considering a Nonlinear Network-Preserving Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Feng Liu, John Z. F. Pang, Shengwei Mei, Steven Low, Zhaojian Wang","submitted_at":"2017-09-05T18:33:13Z","abstract_excerpt":"This paper addresses the distributed optimal frequency control of power systems considering a network-preserving model with nonlinear power flows and excitation voltage dynamics. Salient features of the proposed distributed control strategy are fourfold: i) nonlinearity is considered to cope with large disturbances; ii) only a part of generators are controllable; iii) no load measurement is required; iv) communication connectivity is required only for the controllable generators. To this end, benefiting from the concept of 'virtual load demand', we first design the distributed controller for t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01543","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"haOyMkhJ21dWu+ox6Qu9zem5IIIz4lEXVnCsohMI/R4vlXv95+bkdIzVnLqhpew76t+37/mxX5nLJ6xorc8LAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:01:45.712460Z"},"content_sha256":"f11b80a7169a034bf0aa797f8bbdc4ed94bb84d3734550eccb0bbd699c699043","schema_version":"1.0","event_id":"sha256:f11b80a7169a034bf0aa797f8bbdc4ed94bb84d3734550eccb0bbd699c699043"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH/bundle.json","state_url":"https://pith.science/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T15:01:45Z","links":{"resolver":"https://pith.science/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH","bundle":"https://pith.science/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH/bundle.json","state":"https://pith.science/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MBUYQD2DFSJWFDD4ZAAXADRWUH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:MBUYQD2DFSJWFDD4ZAAXADRWUH","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":"fc7e344fdd935ce8a0c7ee82c4a792af18a7444996dfebac79bd23a42c9456cf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2017-09-05T18:33:13Z","title_canon_sha256":"117a04354fd47a7d09829de1a8e46954b75699ad5d7769e91e58f588e6246d5c"},"schema_version":"1.0","source":{"id":"1709.01543","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01543","created_at":"2026-05-18T00:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01543v3","created_at":"2026-05-18T00:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01543","created_at":"2026-05-18T00:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"MBUYQD2DFSJW","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MBUYQD2DFSJWFDD4","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MBUYQD2D","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:f11b80a7169a034bf0aa797f8bbdc4ed94bb84d3734550eccb0bbd699c699043","target":"graph","created_at":"2026-05-18T00:23:45Z","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"},"paper":{"abstract_excerpt":"This paper addresses the distributed optimal frequency control of power systems considering a network-preserving model with nonlinear power flows and excitation voltage dynamics. Salient features of the proposed distributed control strategy are fourfold: i) nonlinearity is considered to cope with large disturbances; ii) only a part of generators are controllable; iii) no load measurement is required; iv) communication connectivity is required only for the controllable generators. To this end, benefiting from the concept of 'virtual load demand', we first design the distributed controller for t","authors_text":"Feng Liu, John Z. F. Pang, Shengwei Mei, Steven Low, Zhaojian Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2017-09-05T18:33:13Z","title":"Distributed Optimal Frequency Control Considering a Nonlinear Network-Preserving Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01543","kind":"arxiv","version":3},"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":"sha256:745d66a52de3ec5f012f4017da76ac74b9b94c7f65e5f5ec61452f01e8706d19","target":"record","created_at":"2026-05-18T00:23:45Z","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":"fc7e344fdd935ce8a0c7ee82c4a792af18a7444996dfebac79bd23a42c9456cf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2017-09-05T18:33:13Z","title_canon_sha256":"117a04354fd47a7d09829de1a8e46954b75699ad5d7769e91e58f588e6246d5c"},"schema_version":"1.0","source":{"id":"1709.01543","kind":"arxiv","version":3}},"canonical_sha256":"6069880f432c93628c7cc801700e36a1f655040454741f7463c8f6392454dd24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6069880f432c93628c7cc801700e36a1f655040454741f7463c8f6392454dd24","first_computed_at":"2026-05-18T00:23:45.425119Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:45.425119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n2OKWJRTCRm4LsR40WqJrinCCDUn8mrzMxWaa0DbWQY00LZY8VUUqN8tDMGihCykccKgt15LmFk8dMZNMtvjDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:45.425725Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.01543","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:745d66a52de3ec5f012f4017da76ac74b9b94c7f65e5f5ec61452f01e8706d19","sha256:f11b80a7169a034bf0aa797f8bbdc4ed94bb84d3734550eccb0bbd699c699043"],"state_sha256":"e2d6a9276189d63ece77cf00cddee09db7e0cc07fb427c021f7e771e1712dbe7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IoMe4wfRj3uNlwY2QcYkcaDWwnm6LxnMGSFmGfOB5EIZnsneBFJUnfW6kZRPQwkBB+a5mNOUPyYQuIWHtqO1Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:01:45.715943Z","bundle_sha256":"da53e151413d9ccc6f844add51384c79434e4f9bbbf208aa828ffe71b6e4cd69"}}