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Capacitors Generating Incorrect Vars When Automatic Control is Off in Real-Time (Doc ID 2796250.1)

Last updated on AUGUST 20, 2021

Applies to:

Oracle Utilities Network Management System - Version 2.5.0.1.0 to 2.5.0.1.0 [Release 2.5]
Oracle Network Management for Utilities - DMS - Version 2.5.0.1.0 to 2.5.0.1.0 [Release 2.5]
Information in this document applies to any platform.

Symptoms

On : 2.5.0.1.0 version, Web Workspace

On feeders that have SCADA devices as feeder heads, and SCADA devices (i.e. regulator) mid-feeder, operators are seeing drastically different Load results from Powerflow between real-time and study mode.

In real-time, the Load gradually decreases from the feeder head and drops to zero around mid-feeder.
In study-mode, the same feeder shows very high values of Load with the entire feeder being overloaded.

How To Repeat:
Open / Close a Cap from SCADA

Without fix: Observe that the device can produce 7 times the correct number of kVARs.

With fix: Correct kVAR is generated.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
 Fix Description
 Migration
References


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