{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:P3XPVBOHFXRPAXCTCGAWGVUBFC","short_pith_number":"pith:P3XPVBOH","canonical_record":{"source":{"id":"1809.05232","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2018-09-14T02:47:12Z","cross_cats_sorted":[],"title_canon_sha256":"f7a78b85841cf927e67ec24c80a7469726a05ad848d6f8deb5fd0af129d559b2","abstract_canon_sha256":"3557324eef05e2c8291be4c2c5cb7d631f515a586c9febc59e66f582a09d6c70"},"schema_version":"1.0"},"canonical_sha256":"7eeefa85c72de2f05c5311816356812891506e68e36419afcdecd136f5175c1a","source":{"kind":"arxiv","id":"1809.05232","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.05232","created_at":"2026-05-17T23:52:24Z"},{"alias_kind":"arxiv_version","alias_value":"1809.05232v1","created_at":"2026-05-17T23:52:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05232","created_at":"2026-05-17T23:52:24Z"},{"alias_kind":"pith_short_12","alias_value":"P3XPVBOHFXRP","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"P3XPVBOHFXRPAXCT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"P3XPVBOH","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:P3XPVBOHFXRPAXCTCGAWGVUBFC","target":"record","payload":{"canonical_record":{"source":{"id":"1809.05232","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2018-09-14T02:47:12Z","cross_cats_sorted":[],"title_canon_sha256":"f7a78b85841cf927e67ec24c80a7469726a05ad848d6f8deb5fd0af129d559b2","abstract_canon_sha256":"3557324eef05e2c8291be4c2c5cb7d631f515a586c9febc59e66f582a09d6c70"},"schema_version":"1.0"},"canonical_sha256":"7eeefa85c72de2f05c5311816356812891506e68e36419afcdecd136f5175c1a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:24.169650Z","signature_b64":"qlAYwriZLOw5/gZ+k7RTo+/VJiR5X/9aolIQjSFKkvw29q6LHdWBzTHOruu+YY4h4lfsPz5lRdShGzHji0biCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7eeefa85c72de2f05c5311816356812891506e68e36419afcdecd136f5175c1a","last_reissued_at":"2026-05-17T23:52:24.169033Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:24.169033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.05232","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:52:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0sS43hVmb9+gxo6zK2GxYLPO6q1Z0zWjrdcrelkb7l5uF0G3CGb8k6ahXgOaLUzXFIXOwOn4ZeGkQeLYP87WDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:38:12.356044Z"},"content_sha256":"a573bf2caa1b84c01781abd14cd3f211449e190a6097525ac1f52cf09ea3ece7","schema_version":"1.0","event_id":"sha256:a573bf2caa1b84c01781abd14cd3f211449e190a6097525ac1f52cf09ea3ece7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:P3XPVBOHFXRPAXCTCGAWGVUBFC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimal Power Flow for AC/DC System Based on Cooperative Multi-objective Particle Swarm Optimization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OC","authors_text":"Guoqing Li, Yahui Li, Yang Li","submitted_at":"2018-09-14T02:47:12Z","abstract_excerpt":"In order to unifiedly coordinate economy and voltage deviations, a novel multi-objective optimal power flow (MOPF) algorithm is proposed for an AC/DC system with VSC-HVDC based on cooperative multi-objective particle swarm optimization (CMOPSO). In order to minimize power generation costs and voltage deviations, the MOPF model of the AC/DC system is firstly built based on the VSC-HVDC steady-state model. Then, the CMOPSO is adopted for solving the MOPF model to find well-distributed Pareto-optimal solutions. Next, the solutions are divided into different groups via the fuzzy C-means algorithm,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05232","kind":"arxiv","version":1},"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":"2026-05-17T23:52:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6LoW3sfX2tSgPisIp87jAvUkcv0bVjeeKDlUtvSsxFWEBCQGbe+MuQzDnNvLOjPGmsMZDiHn3JmZU0AJWQYhCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:38:12.356703Z"},"content_sha256":"9ca5e471627213121dc2bc0c0cc2885f89fe9671e062754b1079b559b92d8516","schema_version":"1.0","event_id":"sha256:9ca5e471627213121dc2bc0c0cc2885f89fe9671e062754b1079b559b92d8516"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC/bundle.json","state_url":"https://pith.science/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC/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":"2026-05-29T14:38:12Z","links":{"resolver":"https://pith.science/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC","bundle":"https://pith.science/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC/bundle.json","state":"https://pith.science/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P3XPVBOHFXRPAXCTCGAWGVUBFC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:P3XPVBOHFXRPAXCTCGAWGVUBFC","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":"3557324eef05e2c8291be4c2c5cb7d631f515a586c9febc59e66f582a09d6c70","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2018-09-14T02:47:12Z","title_canon_sha256":"f7a78b85841cf927e67ec24c80a7469726a05ad848d6f8deb5fd0af129d559b2"},"schema_version":"1.0","source":{"id":"1809.05232","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.05232","created_at":"2026-05-17T23:52:24Z"},{"alias_kind":"arxiv_version","alias_value":"1809.05232v1","created_at":"2026-05-17T23:52:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05232","created_at":"2026-05-17T23:52:24Z"},{"alias_kind":"pith_short_12","alias_value":"P3XPVBOHFXRP","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"P3XPVBOHFXRPAXCT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"P3XPVBOH","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:9ca5e471627213121dc2bc0c0cc2885f89fe9671e062754b1079b559b92d8516","target":"graph","created_at":"2026-05-17T23:52:24Z","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":"In order to unifiedly coordinate economy and voltage deviations, a novel multi-objective optimal power flow (MOPF) algorithm is proposed for an AC/DC system with VSC-HVDC based on cooperative multi-objective particle swarm optimization (CMOPSO). In order to minimize power generation costs and voltage deviations, the MOPF model of the AC/DC system is firstly built based on the VSC-HVDC steady-state model. Then, the CMOPSO is adopted for solving the MOPF model to find well-distributed Pareto-optimal solutions. Next, the solutions are divided into different groups via the fuzzy C-means algorithm,","authors_text":"Guoqing Li, Yahui Li, Yang Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2018-09-14T02:47:12Z","title":"Optimal Power Flow for AC/DC System Based on Cooperative Multi-objective Particle Swarm Optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05232","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:a573bf2caa1b84c01781abd14cd3f211449e190a6097525ac1f52cf09ea3ece7","target":"record","created_at":"2026-05-17T23:52:24Z","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":"3557324eef05e2c8291be4c2c5cb7d631f515a586c9febc59e66f582a09d6c70","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2018-09-14T02:47:12Z","title_canon_sha256":"f7a78b85841cf927e67ec24c80a7469726a05ad848d6f8deb5fd0af129d559b2"},"schema_version":"1.0","source":{"id":"1809.05232","kind":"arxiv","version":1}},"canonical_sha256":"7eeefa85c72de2f05c5311816356812891506e68e36419afcdecd136f5175c1a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7eeefa85c72de2f05c5311816356812891506e68e36419afcdecd136f5175c1a","first_computed_at":"2026-05-17T23:52:24.169033Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:24.169033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qlAYwriZLOw5/gZ+k7RTo+/VJiR5X/9aolIQjSFKkvw29q6LHdWBzTHOruu+YY4h4lfsPz5lRdShGzHji0biCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:24.169650Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.05232","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a573bf2caa1b84c01781abd14cd3f211449e190a6097525ac1f52cf09ea3ece7","sha256:9ca5e471627213121dc2bc0c0cc2885f89fe9671e062754b1079b559b92d8516"],"state_sha256":"ec0bd9eff519e804d10a577f70e3aabf08d82405f158b85368f486a4712b50ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VpxCmEkpvUfoHeQGNo/ptiIQqyuDz1o8VUEd9FNIem7vOxMVTYkyAyXiUo0nWPdk9KlMg0GSPq7nSwus6PPYDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T14:38:12.360604Z","bundle_sha256":"3c925909dc06b586fb9ee8b86b38cb1e5010abcadbad2b65edf443f4386945c8"}}