NEM System Restart Plan or Local Black System Procedure

Completed system restart material for a named National Electricity Market generating system or network: local black system procedures (LBSPs) that generators, integrated resource providers and network service providers must prepare and submit to AEMO for approval under NER cl 4.8.12(d)-(g), and extracts of the AEMO system restart plan, which NER cl 4.8.12(b) makes confidential information. Such a record holds plant and unit data, units that can restart without external supply, dead-bus synchronisation and trip-to-house-load (TTHL) capability, minimum load and transformer energisation limits, step-by-step restart switching, and approver and contact blocks. The blank AEMO Generator LBSP template, the SRAS Guideline, the System Restart Standard and news about restart tests contain the same headings without values, so they stay at 65 discovery.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium: the primary terms are NER defined terms (cl 4.8.12, 3.11.7-3.11.10) and AEMO LBSP template headings. They dominate the Rules, the SRAS Guideline, Reliability Panel papers and the blank template, so enforce tiers depend on populated values (MW, MVA, unit counts, Yes/No answers, restart step lines, approver and contact fields). The item codes and headings come from the AEMO Generator LBSP template (final stage, 2019). Step-line wording (Open, Close, Energise and similar) is ordinary switching language, not a mandated AEMO format. 85/75 are heuristic evidence tiers, not measured accuracy; test values are synthetic.
Jurisdictions: au
Regulations: National Electricity Rules, National Electricity Law, Security of Critical Infrastructure Act 2018 (Cth)
Frameworks: ISO 27001
Data categories: infrastructure, security, energy-market
Scope: narrow
Risk rating: 9
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?i)\b(?:local\s+black\s+system\s+procedures?|LBSPs?|system\s+restart\s+plan|black\s+start(?:\s+capab(?:le|ility))?|system\s+restart\s+ancillary\s+services?|SRAS|trip(?:ping|ped)?\s+to\s+house\s+load|TTHL)\b

Corroborative evidence keywords

energy support agreement, ancillary services agreement, dead bus, auxiliary supply, restart path, electrical sub-network, diesel generator, confidential information

Proximity: 300 characters

Should match

Local Black System Procedures - Wirrabara Downs Power Station Approver: Dana Testwell, Station Manager Release Date: 14/03/2026 1I Number of generating units that can be returned to service without external supply: 2 3G Dead-bus synchronisation: Yes - Unit 1 onto the 11 kV station board via the black start diesel generator 3O Minimum load: 120 MW per unit The Generator is not a party to an energy support agreement. — Populated LBSP with approver, release date, unit count, dead-bus answer and minimum load, plus energy support agreement evidence - intended 85
System restart plan - Northern electrical sub-network restart path (extract) Step 1: Start black start diesel generator DG1 and confirm auxiliary supply to 415 V board Step 2: Close 132 kV CB 7042 to energise the dead bus at Kellyvale substation Step 3: Synchronise Unit 2 and block load 20 MW Confidential information under NER cl 4.8.12(b). — Restart plan extract with three step lines and restart-path evidence - intended 85
TTHL capability summary for Mount Orrin Station 9A Number of generating units capable of tripping to house load (TTHL): 2 Units must be above 60% load at the time of the disturbance. — One populated technical value (units capable of TTHL) - intended 75
Local black system procedures, Tarrawonga Hydro, revision 3. 3R Largest transformer that can be energised: 180 MVA generator step-up transformer T2 from Unit 1 alone. — One populated transformer energisation limit - intended 75
SRAS restart sequence (Station control room copy) Step 4: Close generator CB G1-52 onto the 11 kV bus after the diesel start permissive clears. — Single restart step line - intended 75

Should not match

(b) The system restart plan is confidential information. (d) Each Generator, Integrated Resource Provider and Network Service Provider must develop local black system procedures in accordance with the guidelines referred to in clause 4.8.12(e). — NER cl 4.8.12 text (legislation decoy) - 65 only
Section 0: LBSP version Information Generation facility | Version: | Release Date: | Approver: | 1B Is the Generator a party to an energy support agreement (refer to the Rules definition)? (Yes / No) 1I Number of generating units that can be returned to service without external supply: 3G Can generating units or generating system be connected to a de-energised bus (e.g. dead-bus synchronisation)? 3O What is the minimum load requirement for stable operation of each generating unit? 3R Please specify the largest size of transformer that can be energised by the generation facility. — Blank AEMO Generator LBSP template headings (template decoy) - must not reach 75
AEMO has published the updated SRAS Guideline, which sets out how it acquires system restart ancillary services for each electrical sub-network and how black start capability is tested against the System Restart Standard. — SRAS Guideline / System Restart Standard guidance text - excluded from enforce tiers
The market operator said a black start test at a Queensland hydro station last week went to plan, restoring supply to a local island within the target time. The system restart plan itself remains confidential. — News about a restart test (no populated values) - 65 only
Black start training exercise for new control room operators: Step 1: Close CB 101 onto the 11 kV bus. Discuss what could go wrong. — Training exercise with an example step line (fixture exclusion) - must not reach 75

Known false positives

The NER, AEMO SRAS Guideline, Reliability Panel System Restart Standard papers and AEMC consultation documents. Mitigation: No populated values, and enforce tiers carry a guidance/consultation exclusion group; these stay at 65 discovery.
The blank AEMO Generator LBSP template, which has every item heading and one example restart-time table. Mitigation: Value regexes need a digit with MW/MVA, a Yes/No answer after a colon, a step line with an equipment token, or a named approver or contact. Blank cells, pipes and underscores do not count. The template's example "30 mins to start 1 unit" table is not an anchor.
Generic plant start-up or switching procedures that mention black start in passing. Mitigation: The step-line regex needs an electrical equipment token, and 85 also needs independent restart evidence. Where a station procedure is really a black start procedure, detection is intended.