L2 V4 10 C264 Internal Synchrocheck E 01

Internal Synchrocheck Configuration PACiS Technical Training Level 2 CS&P – Support Team

PCL

• Content
Prerequisites
Internal Synchrocheck Scheme
Internal Synchrocheck Configuration

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Content
Prerequisites
Internal Synchrocheck Scheme
Internal Synchrocheck Configuration

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Prerequisites 1) VOLTAGE ACQUISITION => CT/VT BOARD (TMU200 or TMU220) TMU200 => 4VT TMU220 => 5VT => 1 synchrocheck on double busbars network.

2) TYPED MODULE CIRCUIT BREAKER

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Content
Prerequisites
Internal Synchrocheck Scheme
Internal Synchrocheck Configuration

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Voltages 2π FL t 2π FB t

VL VB

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Synchronise Relay Principle VL3

VB3

Application ∆F small ∆V small

2π.FL.t 2π.FB.t VL1 ∆ϕ =2π.∆ ∆F.t (1st order development)

VB2

VB1 VL2

Locking « Check » Scheme

VB1

VB1 ∆ϕ = Cte

Coupling Net Scheme ∆ϕ(t) ∆ϕ from ∆F

VL1

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

± ∆(∆ϕ ∆ϕ) ∆ϕ ∆ϕ = 2π.∆ ∆F.Ta VL1 7

• Application to 2 networks Synchro

NETWO RK

VT

A

Close Control

VT

NETWO RK B

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 Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Computer Synchrocheck Function C264 CB CLOSE ORDER

CT/VT calculations

Internal Synchrocheck CT/VT CALCULATIONS

NETWORK

A

NETWORK B

INTERNAL SYNCHRO CHEK

LINE

NETWORK A

Application to two networks Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Synchrocheck Logic Voltage Thresholds Computation Dead/Live Line&Bar (Vline and Vbusbar)

Overriding

settable thresholds

Dead Side Settable Closing Override .Vline and not(Vbusbar) .not(Vline) and Vbusbar .not(Vline) and not(Vbusbar)

Synchronise Scheme Closing Settable Locking / Coupling

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Live / Dead Bus / Line Voltage Thresholds Computation Dead/Live Line&Bar (Vline and Vbusbar)

Dead

None Live (Bypass)

Vline and Vbusbar threshold V>

TRUE if the measured voltage is above the

not(Vline) and not(Vbusbar) threshold V<

TRUE if the measured voltage is below the

Live threshold

Dead threshold Nominal V = 100V

Note : There is 5% of hysteresis on voltage thresholds (See C264_FT). 45V

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• Dead Side Overriding

Dead Side

Vline and not(Vbusbar) voltage control (LL-DB) Vline Not(Vbusbar)

&

T2

0

Closing authorization

Not(Vline )and Vbusbarvoltage control (DL-LB)

T2

Not(Vline )and Not(Vbusbar)voltage control (DL-DB)

T1

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

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• VLINE & VBUSBAR Voltage Control Synchronise Scheme Closing Settable Locking or Coupling FOR CLOSING AUTHORISATION ➘ Presence of both voltages (LL-LB) ➘ ∆V is lower than a configurable threshold (%) ➘ Fline and Fbusbar are such Fmin 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

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Internal SC Sons & Relations (2) 1) Internal SC Basic Configuration 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

Schneider Electric - CS&P – C264 Internal Synchrocheck – E01

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• Internal SC Sons & Relations (3) 1) Internal SC Enhanced Configuration 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 : for Manual SC, order to put in/out service

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