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yang9501 edited this page Mar 2, 2018 · 7 revisions

Overview

The transmission model calculates the expected powerflow voltage results per node on a given feeder circuit.

Walkthrough

The transmission feeder model can be modified in real-time using a graphical interface by pressing the green 'Open Editor' button to the right of the name. Users are able to add, delete, relocate, or modify the information of each of the components. Once the feeder has been changed to your requirements, the simulation can be further customized using the following inputs:

  • Algorithm: The MATPOWER powerflow solver method. Can be set to NR (Newton Raphson), FDXB (Fast-Decoupled XB Version), FDBX (Fast-Decoupled BX Version) or GS (Gauss Seidel). These are the solution algorithms supported by MATPOWER.

  • Model: The powerflow formulation, set to AC or DC.

  • Tolerance: The termination tolerance for powerflow, in units P and Q dispatch per unit.

  • Iteration: The maximum number of iterations for the NR, FDXB, FDBX or GS solver methods.

  • Generation Limits: Whether or not to set power limits on the generators in the system. User can choose from “do not enforce” (0 code on backend), “enforce with simultaneous bus type conversion” (1 code on backend), and “enforce with one-at-a-time bus type conversion” (2 code on backend).

Model Results

Total Loads and Losses- Bar graph of total loads and losses with and without CVR on the feeder.

Powerflow at Substation- Line graph comparing the amount of power being used by the feeder with and without CVR implemented during the simulation.

cvrDynamic_Powerflow

Voltages at All Meters- Graph comparing the mean, minimum and maximum voltages at the feeder’s meters with and without CVR.

Regulator Tap Positions- Shows regulator tap position every hour during the simulation.

cvrDynamic_Taps

Capacitor Switch Positions- Shows position of capacitor switches during the simulation.

Substation Voltages- Shows the substation voltages of the feeder during the simulation.

Projected Savings from CVR by Month- Table of savings from CVR. Will display more months depending on the number of hours simulated. Energy reduction is given as a negative value because the utility will be losing some revenue to decreased energy sales.

cvrDynamic_Savings

Projected Savings from CVR over System Lifetime- Uses the projected savings to forecast 30 years into the future total savings.

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