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[DEV-7134] Use new averageVoltageSpreadThreshold field for tap optimisation #55

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[DEV-7134] Use new averageVoltageSpreadThreshold field for tap optimisation #55

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54ab6ac
first draft
Lax125 Feb 11, 2026
ea16f85
remove nominal low voltage from intervention config
Lax125 Feb 12, 2026
5d1bbeb
update changelog
Lax125 Feb 12, 2026
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4 changes: 3 additions & 1 deletion changelog.md
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Original file line number Diff line number Diff line change
@@ -1,7 +1,9 @@
# EAS Python client
## [0.28.0] - UNRELEASED
### Breaking Changes
* None.
* For `CandidateGenerationConfig`, replaced `voltage_delta_avg_threshold` with `average_voltage_spread_threshold`, which serves the same purpose but is
in volts instead of voltage per-unit.
* EAS must support this change in the GraphQL schema (`v2.10.0` and above).

### New Features
* None.
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4 changes: 2 additions & 2 deletions src/zepben/eas/client/eas_client.py
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Expand Up @@ -386,11 +386,11 @@ def work_package_config_to_json(self, work_package: WorkPackageConfig) -> dict:
"candidateGeneration": work_package.intervention.candidate_generation and {
"type": work_package.intervention.candidate_generation.type.name,
"interventionCriteriaName": work_package.intervention.candidate_generation.intervention_criteria_name,
"voltageDeltaAvgThreshold": work_package.intervention.candidate_generation.voltage_delta_avg_threshold,
"averageVoltageSpreadThreshold": work_package.intervention.candidate_generation.average_voltage_spread_threshold,
"voltageUnderLimitHoursThreshold": work_package.intervention.candidate_generation.voltage_under_limit_hours_threshold,
"voltageOverLimitHoursThreshold": work_package.intervention.candidate_generation.voltage_over_limit_hours_threshold,
"tapWeightingFactorLowerThreshold": work_package.intervention.candidate_generation.tap_weighting_factor_lower_threshold,
"tapWeightingFactorUpperThreshold": work_package.intervention.candidate_generation.tap_weighting_factor_upper_threshold,
"tapWeightingFactorUpperThreshold": work_package.intervention.candidate_generation.tap_weighting_factor_upper_threshold
},
"allocationCriteria": work_package.intervention.allocation_criteria,
"specificAllocationInstance": work_package.intervention.specific_allocation_instance,
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8 changes: 6 additions & 2 deletions src/zepben/eas/client/work_package.py
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Expand Up @@ -767,9 +767,13 @@ class CandidateGenerationConfig:
base work package run. Only used when type is CRITERIA.
"""

voltage_delta_avg_threshold: Optional[float] = None
average_voltage_spread_threshold: Optional[int] = None
"""
The threshold for average deviation in voltage p.u. across the transformer. Only used when type is TAP_OPTIMIZATION.
The threshold for average voltage spread under the transformer over the year, in volts.
Voltage spread at each timestep is calculated by taking the difference between the maximum and minimum voltage over
the nodes under the transformer, for each phase, then taking the maximum of that difference across all phases.
When the average voltage spread exceeds this threshold, it indicates that the transformer is experiencing a
significant voltage swing that may impact system stability. Only used when type is CRITERIA.
"""

voltage_under_limit_hours_threshold: Optional[int] = None
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