Original scientific paper
Automatic Generation Control Application for Transmission and Generation Centres
K. VRDOLJAK
; Končar - Power Plant and Electric Traction Engineering Inc. Croatia
B. KOPIĆ
; Končar - Power Plant and Electric Traction Engineering Inc. Croatia
J. KRSTULOVIĆ OPARA
; Končar - Power Plant and Electric Traction Engineering Inc. Croatia
S. SEKULIĆ
; Končar - Power Plant and Electric Traction Engineering Inc. Croatia
Abstract
Recently, a new Emergency Control Centre for Albanian Transmission System Operator (TSO),
which includes Supervisory control and data acquisition (SCADA) and Automatic Generation
Control (AGC) applications, has been commissioned. Nowadays, an AGC application is being
prepared for the biggest generation company in Croatia, as part of control centre for hydropower
plants within western part of Croatia. Both of these implementations use the same AGC
application, which is presented in this paper.
Although AGC for TSO and AGC for Generation Centre (GC) have many similarities, their main
goals are different. AGC for TSO must mainly regulate system’s frequency and area’s active power
interchange to their desired values, using only power plants engaged in load-frequency control
(LFC). However, AGC for GC must ensure that power production of each power unit not engaged
in LFC tracks its planned value, while also ensuring that centre’s share in LFC is being respected.
Albeit the AGC is standalone application, in both afore-mentioned implementations it is affiliated
with SCADA application, from which it obtains all required input measurements and indications
and to which it delivers calculated setpoints. Additionally, all AGC pictures are integrated into
SCADA pictures as well, in order to simplify operation and monitoring functionalities.
AGC for Albanian TSO controls active power generation of six hydro power plants engaged in
LFC. AGC for GC West in Croatia controls active power generation of ten hydro power plants. In
both implementations, communication with remote objects is done using IEC 60870-5-104
communication protocol, while communication with other control centres is done using ICCP
communication protocol. Power production plans are sent to AGC either from Market Management
Systems (in TSO case) or from scheduling and optimization application (in GC case)
Keywords
Automatic Generation Control; Load-frequency control; Emergency Control Centre; Generation Centre; Transmission System Operator; SCADA
Hrčak ID:
213479
URI
Publication date:
1.8.2018.
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