L2 V4 10 C264 Internal Synchrocheck E 01

Internal Synchrocheck

Configuration

PCL

PCL

PCL

PCL

PACiS

PACiS

PACiS

PACiS Technical

Technical

Technical

Technical Training

Training

Training

Training Level

Level

Level

Level 2

2

2

2

CS&P

CS&P

CS&P

• Content

Prerequisites

Internal Synchrocheck Scheme

• Content

Prerequisites

Internal Synchrocheck Scheme

• Prerequisites

1) VOLTAGE ACQUISITION => CT/VT BOARD (TMU200 or TMU220) TMU200 => 4VT

TMU220 => 5VT => 1 synchrocheck on double busbars network.

• Content

Prerequisites

Internal Synchrocheck Scheme

V_B

2π F_B t

2π F_L t

V_L

• Voltages

V_L1 V_L2 V_L3 V_B1 V_B2 V_B3 ∆ϕ ∆ϕ∆ϕ ∆ϕ 2π.FB.t 2π.FL.t =2π.∆∆∆F.t (1st order development) ∆ Application ∆ ∆ ∆ ∆F small ∆ ∆ ∆ ∆V small V_L1 V_B1

Coupling Net Scheme ∆ϕ∆ϕ∆ϕ(t) from ∆∆ϕ ∆∆F∆

± ∆∆∆∆(∆ϕ∆ϕ∆ϕ)∆ϕ ∆ϕ ∆ϕ∆ϕ ∆ϕ = 2π.∆∆∆∆F.Ta V_L1 V_B1

Locking « Check » Scheme

∆ϕ ∆ϕ ∆ϕ

∆ϕ = Cte

Synchro Close Control NETWO RK B NETWO RK A VT _VT 3 CB Closing conditions •Same frequency •Same amplitudes

•Same phases & zero-phase angle difference

4 Kinds of synchronisation closure

•Check synchronisation LOCK A, B already connected (Same Frequency)

•Power synchronisation COUPLING A, B split power system (independant)

•Generator synchronisation A generator, B Grid Drive Turbine/excitation

•Without synchronisation OVER-RIDE dead line/bar

• Application to 2 networks

C264

B _{LINELINELINELINE}

Application to two networks

Voltage Thresholds Computation

Dead/Live Line&Bar (V_line and V_busbar) _{settable thresholds}

.V_line and not(V_busbar) .not(V_line) and V_busbar

.not(V_line) and not(V_busbar) Settable Closing Override

Synchronise Scheme Closing Settable

Locking / Coupling Overriding Dead Side

V_line and V_busbar TRUE if the measured voltage is above the threshold V>

Live threshold

not(V_line) and not(V_busbar) TRUE if the measured voltage is below the threshold V<

Dead threshold

Voltage Thresholds Computation

Dead/Live Line&Bar (V_line and V_busbar)

Dead None Live (Bypass)

• Live / Dead Bus / Line

Note : There is 5% of hysteresis on

voltage thresholds (See C264_FT).

Nominal V = 100V

If, during the T1, T2 delay time, one of the 2 criteria is lost, the timer is reinitialised and is launched again on reappearance of all the criteria.

➘ T1, T2 configurable delay

V_line and not(V_busbar) voltage control (LL-DB)

Overriding Dead Side

V_{line T2 0}

& Closing authorization Not(V_busbar)

Not(V_line )and V_busbarvoltage control (DL-LB) T2 Not(V_line )and Not(V_busbar)voltage control (DL-DB) T1

FOR CLOSING AUTHORISATION ➘ Presence of both voltages (LL-LB)

➘ ∆∆∆∆V is lower than a configurable threshold (%) ➘ Fline and Fbusbar are such Fmin<F<Fmax

➘ ∆∆∆∆F is lower than a configurable threshold (raw value)

➘ ∆ϕ∆ϕ∆ϕ∆ϕ voltages is lower than a configurable threshold (raw value in °) ➘ ∆∆∆∆(∆ϕ∆ϕ∆ϕ∆ϕ) anticipation (COUPLING)

Synchronise Scheme Closing

Settable

Locking or Coupling

• V

_LINE

& V

_BUSBAR

Voltage Control

2% on voltage delta threshold for locking and coupling
0,014 Hz on frequency delta threshold for locking

0,028 Hz on frequency delta threshold for coupling
0,01 Hz on frequencies thresholds

1°on phase delta threshold for locking.

➘ T1 configurable timer & V_line V_busbar ∆ ∆∆ ∆F <E_freq ∆ ∆∆ ∆V < E_vect

F_min < F_busbar < F_max F_min < F_line < F_max

T1 0

Locking ∆ϕ∆ϕ∆ϕ < E∆ϕ _phase

Locking close

Ta = anticipation time or response time of the CB

∆ ∆∆

∆(∆ϕ∆ϕ∆ϕ∆ϕ) is phase anticipation the acceptable mistake on ∆ϕ∆ϕ∆ϕ∆ϕ.

Coupling check ∆ϕ∆ϕ∆ϕ∆ϕ Close When ∆ϕ ∆ϕ ∆ϕ ∆ϕ = ∆∆∆∆F*360*Ta ± ∆∆∆(∆ϕ∆ ∆ϕ∆ϕ∆ϕ)

• Content

Prerequisites

Internal Synchrocheck Scheme

• Auto / Manual Internal SC (1)

• Add / Configure an Internal SC (1)

Built-in function : Internal auto CS Internal manu CS

2) Internal SC attributes : General Tab

Automatic Out Of Service : If Manual SC => Yes/No

• Add / Configure an Internal SC (2)

Presence / Absence Test Duration:

To declare Live/Dead 3) Internal SC attributes : General Tab (1)

For locking scheme :

∆ ∆∆

∆V, Fmin, Fmax,∆∆∆∆F,∆Φ∆Φ∆Φ∆Φ

For coupling scheme :

∆ ∆∆

• Add / Configure an Internal SC (3)

Thresholds :

detection of Live Line, Dead Line detection of Live Bus, Dead Bus % of nominal value

• Add / Configure an Internal SC (4)

Synchro Close =

Sync CB Close for automatic SC

Switch Ctrl DPC and SC On/off = ON for manual SC

coupling usage / locking usage / close authorisation in DL-LB, LL-DB, DL-DB / timer T1 for locking / coupling scheme to maintain conditions

Close =

Switch Ctrl DPC for automatic SC

Switch Ctrl DPC and SC On/off = OFF for manual

SC

locking usage (LB) / close authorisation in DL-LB, LL-DB, DL-DB / timer T1 for locking scheme to maintain conditions

Automatic Close = from AR

locking usage (LB) / close authorisation in DL-LB, LL-DB, DL-DB / timer T1 for locking scheme to maintain conditions

• Internal SC Sons & Relations (1)

=> 1 internal SC per C264

Relation “is synchrocheck of” target synchronised CB

Target CB Configuration

Add “Sync CB Close” under CB - same SBO/DE conf. as Switch Ctrl DPC

• Internal SC Sons & Relations (2)

Close Order SPS :

transient SPS set as soon as a synchronised closure is in progress

On/Off SPS : SC In/Out Service Possible Closing :

when locking conditions are OK, set after T1 timer

Dead Line Live Line Dead Bus Live Bus

• Internal SC Sons & Relations (3)

Accept forcing SPS : - not wired

- SPS datapoint, giving authorisation to force synchrocheck

- OI and GTW are clients of this SPS for synchrocheck forcing

CS Locked SPS : SC locked status

On/Off SPC or DPC :