Con ontr trol ol Sys yste tem m Dia iagr gra am
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Control Circuit System
Control System Elements • Switchgear Protection and Control Circuit – Circuit breaker trip and closing coils – Circuit breaker closin s rin char in motors – Relays coils and timer
•
o or
ar er,
pee
on ro , an
ro ec on
– Starter coil circuit – Control relays –
an e e
er
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
or
con ro c rcu Slide 2
Control System Elements • Miscellaneous DC Loads – Relays – Solenoids
• Other Purpose – Auxiliary devices and special control circuits – Regulator and regulating systems
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 3
CSD Modes Edit Mode •Add/Delete Elements • ange onnec ons •Modify Engineering Data
Simulation Mode •Run Simulations – Simulation Triggered by Manual Action or Clicking the Run Button • p a e ource u y yc e •Generate Event View, Alert View, and Report
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 4
CSD Setup CSD Elements •Device – Coil, Solenoid, General Load and Light •Contact – Fixed and Form-C; Macro-Controlled Contact •Branch – Wire and Impedance •Bus and Node •PD – CB and Fuse
CSD Source •Elementary Diagram (ED) brought in from DC System •
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 5
Control Cable Schedule Control Cable Schedule •Cable Used only in Control System Diagram •Can Have Multiple Wires for Different Wires in CSD •Assigned, Reserved, and Available Wire •Parameter Entered from Editor or Retrieved from Library •Parameter Change Affects All Wires
Wire Impedance Value •Editor Entered Data • a e rary a a – a a as e n a e ec on me •Control Cable Schedule Data – Dynamically Retrieved from Cable Schedule – from Library at Calculation Time
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 6
Solenoids & Relays
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 7
Device Property Device Rating •Burden Rating and Inrush Rating •Burden Rating Can be Constant P, Z, or I •Inrush Rating Always Modeled as Constant Z •Inrush Duration – length of Time Applying Inrush Rating •Vpickup & Vdropout – Editor and Study Case Options
Device Duty Cycle •Model Device as a Time Varying Load , ,
–
Device Model Type •If Duty Cycle Is Used, a Device Draws Current When It is Energized and Amp > 0 by Duty Cycle
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 8
Control Logic Control Logic Setup •A Coil/Solenoid Can Control State of Multiple Contacts •Library Contact, Library Overwrite Contact & User Defined Contact •Macro Controlled Contact – Time Varying Switch
Contact Property • aa o y on ro ng ev ce •Top – Time Taken for Contact Switching to Off-Normal State when V >= Vpickup is maintained for controlling device. – when V <= Vdeopout is maintanined for controlling device. •Each contact has its own Top and Trelealse
Special Conditions •If Duty Cycle Model Used for a Device, Control Logical Does .
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 9
CSD Simulation Initial Steady State •Switching Device in Specified State, Macro-Controlled Contact in Initial State, and Contact In Normal State •CSD Find Initial Steady state •V Limit Not Checked When Switching Mode •V Limit Checked When Clicking Run Button
Simulations •CSD Behaves as A Simulator •One Action Triggering Simulation – From Current Steady State to Next Steady State •When Run Button Clicked, Simulation Starts from the Initial teady tate and Then imulate Duty ycle Actions
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 10
Simulation Method wo
et o s
y
•Sequence of Operation Simulation •Sequence Simulation with Vd Calculation Features
Seq Op
Vd
Logical Simulation
Y
Y
Voltage Drop Calculation and Reporting
N
Y
CSD Source Volta e
N
Y
Vpickup & Vdropout Checking & Reporting
N
Y
Composite CSD Duty Cycle Updating
N
Y
As Part of Battery Discharge Calculation
N
Y
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 11
Study Case Options ev ce
o e
•Global Options – Rating or Duty Cycle •Individual Editor Options
Device Voltage Limit •For Vpickup and Vdropout •Global Option Provided due to Lack of Data from Manufacturers
CSD Source Voltage Options •ED Rated V, Terminal Bus V, Battery Discharge V
Alert •Voltage Alert – Base Defined in Voltage Limit Section •Current Alert – for Device, Contact, and Wire
Adjustment •R Adjustment for Contact and PDs •Tem erature Ad ustment for Wire R •Length Adjustment for Wire •Burden Rating Adjustment for Coil and Solenoid ©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 12
Simulation Result Report vent
ew
•Detailed Steps of Sequence Simulation •State Changes of Each Element • o age ec esu s
Alert View •Critical and Marginal Violation of Pickup and Dropout Voltage •Critical and Marginal Current Violation of Devices, Contact, and Wire •Alerts are Generated only for Simulation with Vd Calculation
Crystal Report •Input Data •Voltage Drop and Power Flow Report for Each Step •All Alerts •Report is Generated only for Simulation with Vd Calculation ©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 13
Duty Cycle Update Composite CSD Duty Cycle Update •Update to the Specified Duty Cycle Category •Initial Time Shift to Set to New Time Reference
CSD Source Voltage •Modeled as Constant Voltage Source for a Time Moment – not Saved When Closing Project •Time Offset for Adjusting Time Reference
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 14
Configuration & Revision Configuration •Configuration Is Not Supported in CSD
Revision •Revision is Not Supported for All the Data in Device Contact •Revision May Not Be Supported for Cable Schedule Data and Wire Impedance Page Data •
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 15
Composite CSD Duty Cycle in ED Duty Cycle Entered in ED Editor •Each Section Can Be Constant P, Z, or I •Load Sections Can Overlap in Time •Random and Non-Random Load
Duty Cycle Updated Individually from CSD Simulation • un mu a on o p a e u y yc e •Time Reference Adjustable for Individual CSD •May Be Time Consuming
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 16
CSD Vd Calculation in BS CSD Vd Calculation •Option to Perform Vd Calculation in BS Study Case •Vd Calculation Conducted for Each CSD with Bus Voltage from BS •Vd Calc Results for all CSDs Saved in One Report •CSD Vd Alert Also Available •All CSDs Use Same Time Reference as Battery Discharge
Bus Voltage from Battery Discharge • us o age ro e ave ac me a ery sc arge Conducted •Bus Voltage Profile Available for Individual CSD Simulation with •Bus Voltage Profile Not Saved When Closing Project File
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 17
Auto-Calc CSD Duty Cycle in BS CSD Duty Cycle Calc in Battery Discharge •Each CSD Duty Cycle Calculated •Device Model Specified In Study Case •Vpickup & Vdropout Checked in Calculation •CSD Duty Cycle Updated to ED Separated by Load Type (P, Z, I)
Special Considerations •Switching Events Must Be Triggered by Macro Controlled Switch
©1996-2010 Operation Technology, Inc. – Workshop Notes: Control Circuit System
Slide 18
