Čkd blansko engineering, a.s. ighem 2012 changing the start-up procedure of francis reversible...
TRANSCRIPT
ČKD Blansko Engineering, a.s.
IGHEM 2012Changing the Start-up Procedure of Francis
Reversible Pump-Turbine to Improve its Stability in Turbine Mode
Zdenek CepaCKD Blansko Engineering, a.s. 2357 Capkova, 67801 Blansko, Czech Republic
Content:
Introduction Characteristic evaluation of the pump-turbines Criterion of the S-shaped region Analysis of S-shaped region Asynchronous control of two wicket gates Modified start up procedure of SPP Zarnowiec in Poland Conclusions
ČKD Blansko Engineering, a.s.
Local S-shaped regions in equal operating
curves
ČKD Blansko Engineering, a.s.
Four quadrants operation of a radial type pump turbine
ČKD Blansko Engineering, a.s.
Analysis of the S-shaped region
Turbine area (I)
Dissipation of energy (II)
Static instability region
(IV)
Reverse pumping (III)
ČKD Blansko Engineering, a.s.
ČKD Blansko Engineering, a.s.
Stability condition
Main parameters of SPP Zarnowiec in Poland – runner diameter 6000mmTurbine mode: Pumping mode:Hmax=119.95 m Penstock factor Hmax=127.1 m Hmin=101.00 m Discharge at total head 127.1 mQmax=178.5 m3.s-1 Qmax=128.2 m3.s-1
Pmax=180 MW Pmax=178.9 MW
ČKD Blansko Engineering, a.s.
Company profile
ČKD Blansko Engineering, a.s.
Turbine condition
M11=0
Braking condition
Pump condition
Offered services
ČKD Blansko Engineering, a.s.
Pump H-Q characteristics, scaled up to the prototype (IEC 60 193)
guarantees
model tests results
Discharge
Del
iver
y h
ead
[m
]
c
a
Automatic start up without modification of butterfly valve automatics
ČKD Blansko Engineering, a.s.
Stabilizing effect of the butterfly with valve head losses
ČKD Blansko Engineering, a.s.
s
0 6 0 1 2 0 1 8 0 2 4 0 3 0 0 3 6 0 4 2 0 4 8 0 5 4 0 6 0 0
%
1 1 0
1 0 0
9 0
8 0
7 0
6 0
5 0
4 0
3 0
2 0
1 0
0
M W
2 2 0
1 8 0
1 4 0
1 0 0
6 0
2 0
- 2 0
- 6 0
- 1 0 0
- 1 4 0
- 1 8 0
- 2 2 0
k P a
2 2 0 0
2 0 0 0
1 8 0 0
1 6 0 0
1 4 0 0
1 2 0 0
1 0 0 0
8 0 0
6 0 0
4 0 0
2 0 0
0
m - 3 s
2 2 0
2 0 0
1 8 0
1 6 0
1 4 0
1 2 0
1 0 0
8 0
6 0
4 0
2 0
0
y b v [ % ] g v [ % ] n [ % ] P a [ M W ] p 1 [ k P a ] p 2 [ k P a ] p 3 [ k P a ] p 4 [ k P a ]
Q [ m - 3 s ]
Stabilizing effect of the butterfly with valve head losses
ČKD Blansko Engineering, a.s.
Butterfly valve modified automatics
ČKD Blansko Engineering, a.s.
ČKD Blansko Engineering, a.s.
Thank you for your attention