20 - Optimal Capacitor PlaceOptimal Capacitor Placement.pdfment

Opt ptii ma mall Capa pac c i to tor r

©1996-2010 Operation Technology, Inc. – Workshop Notes: Optimal Optimal Capacitor Placement Placement

Problem of Var Flow in ower ystems •

. ., and transformers) are inductive in nature

• Most power systems operate at a lagging power factor • Resulting system capacity reduced, system decreased

©1996-2010 Operation Technology, Inc. – Workshop Notes: Optimal Capacitor Placement

Slide 2

Purposes of Shunt apac tor pp cat ons •

– transmission systems and secondary benefit

• Voltage control – Primary benefit for both transmission and distribution systems •

– benefit for transmission systems and primary


Slide 3

Purposes of Shunt apac tor pp cat ons •

– benefit for transmission systems and primary

• Billing charge reduction – Not applied to transmission systems but a primary bene it for distribution systems


Slide 4

General Process for Placing unt apac tors • • Determine connection location • Determine a control method •

e erm ne a connec on ype wye or e a


Slide 5

General Methods for apac tor acement

• Based • Optimal


Slide 6

Optimal Capacitor acement n find optimal (sub optimal) solution • Expert System Initialization- Use power system knowledge to find a good initial solution


Slide 7

Genetic Algorithm • theory of nature selection • An iterative procedure that maintains a constant-size population of candidate solutions •

, , selection, crossover, mutation


,

Slide 8

ETAP OCP Capabilities •

’

• Minimize the total cost of installation and operation • Handle radial or meshed balanced networks (PS 5.0) • User selectable capacitor placement purpose •


Slide 9

ETAP OCP Capabilities • review capacitor impact on the system with • Speed and precision ratio control by users • Determine available capacitor installation


Slide 10

ETAP OCP Capabilities

maximum load and determine switchblade • Use average or source energy cost • Focus on saving during the whole planning


Slide 11

Display Results • • New capacitor locations and sizes


Slide 12

Plot Results • period • Capacitor operation cost during the planning period • Profit during the planning period


Slide 13

Report Results

• Capacitor locations and sizes • Load flow results for maximum, average and • Branch capacity release


Slide 14

Example • (critical under voltage is set to 95% and • Switch to OCP mode and look at the study case settings • improvements


Slide 15

20 - Optimal Capacitor PlaceOptimal Capacitor Placement.pdfment

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