8/8/2019 Proposed Metering Scheme for solar Pv plant

1/1

GI

1

Bus

(Draft fordiscussion)

Proposed Metering Scheme

Solar Installation and Metering Scheme

TO UTILITY NETWORK

GridImport=GIGM Grid Export = GE

SW1

S1

Main Consumer bus (11 KV)

CM

ConsumerImport =CI

UTILITY AC BUS

SMSE(N)

SW 3 SW2

Consumer AC LT BusSolar LT

S1 S2

INVERTER

CI

CONSUMER NON -

EMERGENCY LOAD

INVERTER

CUM CHARGER

SOLARPANEL

Roof top solar power plant

CONSUMER

EMERGENCY

LOAD

BATTERY

DG LT Bus

DG

SE(N)+GI=GE+CI

GM=Grid MeterCM=Consumer Meter

SM=Solar Meter

SE(N)=Net Solar Export Meter reading

SW = Switch

Normally solar panel is connected with the grid. When grid fails, inverter controlled

normally closed (ON) Switches S1 and normally open (OFF) Switch S2 will open & close

respectively. On restoration of supply, reverse action will take place.