savr - etip snet
TRANSCRIPT
SAVR
Automatic Secondary Regulation of Voltage
and Usage of Reactive Power
EGÚ Praha Engineering,a.s.
Podnikatelská Str. 539, 190 11 Praha 9 – Běchovice
Phone: + 420 603 247 976, e-mail: [email protected]
www.egu-prg.cz
Within the scope of company´s activites in the field of System and Ancillary
Services in the Power Sector there is a dominant know-how and technical ability
in the field of Renewable Energy Sources – RES. This covers the development
and application of methodologies and algorithms, SW and HW systems and
technical tools for the regulation of the power network parameters - voltage and
reactive power of the systems - at all nominal voltage levels.
Characteristic products:
SAVR - Automatic System of Voltage and Reactive Power Control
ARN - Automatic Voltage Controller
SRU - Group Voltage Controller
Dynamic models of Transients in Power Networks
Verification model for sensitivity analyses
Analyses and Dynamic Models of "Island"
EGÚ PRAHA ENGINEERING, a.s.
Dreg400 - regulating deviation of voltage 400 kV
dU110 - needed change of voltage 110 kV Areg - regulating constant
Ureg110 - real (measured) value of voltage 110 kV
Uset110 - set value of voltage 110 kV for GE
Areg
Uset110
Ureg110
Dreg400WFMS
Uset400
Ureg400
0.0
+
-+
+
Limitation due to voltageon lower lewels
Non-sensivity
Limitation
dU110
+Dreg max
-Dreg max
Uset400 - set value of voltage 400 kV at Tariverde Ureg400 - real (measured) value of voltage 400 kV at Tariverde
Block scheme of the regulator 400 kV Tariverde
1 2 3 4 5 6 7
Legend:
+
dUtap0
0 ... tap number was not changed
1 ... tap number was changed
dUtap - set value change corresponding to the 400/110 transformer tap change
Uset 400
TOL400 = -0,5kV TOL400 = 0,5kV
- No regulator reaction
- Regulator reacts
SAVR
Automatic voltage regulation and reactive power system
SAVR The SAVR system is a set of hardware and software tools that make it possible
to achieve the desired benefits in the controlled power system. The regulatory
activity itself can be provided by means of these following devices (called action
members):
• Generators of all types of power plants
• Compensation devices - static and rotary compensators, power reactors
• Transformers
It can be generally said the systems of U and Q control are mainly designed in
a three-level hierarchy
REGULATION OF VOLTAGE AND REACTIVE POWER
EGÚ Praha Engineering,a.s.
WHY AN AUTOMATIC SYSTEM OF U AND Q REGULATION – SEE THE
ACCENT ON THE EXPECTED BENEFITS OF U AND Q CONTROL
Increased safety of the operation of the regulated power system
Increasing the efficiency of operation of the regulated power system
/reducing technical losses/
Improving the quality of electricity supply to the end customer
Compliance with the tolerance values of reactive power flow agreed with the
neighboring power system
Elimination of the negative reverse effect of the wind and photovoltaic power
plants on the regulated power system
Elimination of the reverse effect of industrial wholesale customers on the
regulated power system
Reduction of the claims on the dispatcher of the regulated power system
Elimination of reactive power dragging of the electrically close generators
EGÚ Praha Engineering,a.s.
REGULATION OF VOLTAGE AND REACTIVE POWER
First step: Evaluation of variants of possible ways of regulation:
regulation U
regulation Q
regulation cos phi
Selected Variant : REGULATION U
/ ** The cos phi control can cause a problem with network stability. Voltage and reactive power are affected
by active power (Overvoltage occurrence in the system). ** Regulation Q does not help the system and
regardless of system requirements, Q is constant /
Regulation of U - Coordinated cooperation of generators and transformers.
Properly adjusting the tap position of the superior transformer results in reduction of
overflows Q, while maintaining the operating point of the generator in the middle of
the P Q diagram. There is therefore a regulatory reserve in the generator excitation
system being used by the SAVR.
Project for the ČEZ Distribution a. s.
Regulation of voltage and reactive power
THE MORE COMPLEX THE CONTROLLED GRID IS,
THE GREATER ARE REQUIREMENTS FOR ITS REGULATION
EGÚ Praha Engineering,a.s.
Project beginning in the year 2000 - nowadays still under
continuation
3 areas:
ČEZ Střed (Central),
ČEZ Sever (North),
ČEZ Morava
Power plants, industrial companies, renewable resources
Project for the ČEZ Distribution a. s.
Regulation of voltage and reactive power
THE MORE COMPLEX THE CONTROLLED GRID IS,
THE GREATER ARE REQUIREMENTS FOR ITS REGULATION
EGÚ Praha Engineering,a.s.
Voltage regulation example
Unregulated power system of 110 kV:
Record of the day course of voltage
Regulated power system of 110 kV:
Record of the day course of voltage
EGÚ Praha Engineering,a.s.
Regulatory process
Voltage regulation
Record of the day course of voltage and reactive power
Voltage and reactive power in the system have a local character. Voltage
in the individual points of the system may be different.
Set value
Regulated value
Reactive power
Automatic
maintenance
of voltage
Active proposing the Q changes in order to keep the voltage within
the required limits.
EGÚ Praha Engineering,a.s.
cos Φ VAR controlled
When controlling the voltage
the cos Φ is not necessary to be kept
Regulation Range Enlargement for Voltage 400 kV
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWING
EGÚ Praha Engineering,a.s.
Number of regulatory steps on the transformers is with SAVR reduced.
The transformer may no longer regulate the fluctuation of 110 kV
voltage, but only its own voltage changes.
EGÚ Praha Engineering,a.s.
Reduction of number
of switches
Decrease of number of tap changes on TS/110 kV and 110 kV/VN
transformers (this saves transformers - lifetime extension, and
eliminates large sudden voltage variations)
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWING
Principles of automatization of voltage regulation and usage of reactive power
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWINGC
Terciary
(TRV)
Secondary
(SAVR)
Primary
(AVR)
on the level Regulation hierarchy
Dispatching
Production /
Generation
Generator
SAVR systems are mainly used to regulate complex distribution grids
at primary and secondary level
data regarding voltage,
reactive tension, …
EGÚ Praha Engineering,a.s.
THE MORE COMPLEX THE CONTROLLED GRID IS,
THE GREATER ARE REQUIREMENTS FOR ITS REGULATION
EGÚ Praha Engineering,a.s.
THE AUTOMATIC SECONDARY REGULATION OF VOLTAGE
WILL, HOWEVER, BRING MAINLY THE TECHNICAL BENEFITS
Overview of additional benefits from implementation of SAVR
Elimination
of overflows
of reactive power SAVR eliminates the overflows of reactive power
EGÚ Praha Engineering,a.s.
BRUSH Thermal Power Plant
FCU Enercon
Wind Park1
PPC Vestas
Wind Parkn
Hydro-power
Plant
SAVR
Q Q Q Q
Voltage is being influenced by all the generators, transformers and reactors connected to
the pilot node. SAVR capability makes it possible in the pilot node to connect different
primary systems (different manufacturers, different technologies, different way of
connection to the primary system).
! WARNING: The sources being outside of the SAVR
can even act against the SAVR !
Pilot node e.g. bus – bar 400kV
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWING
Modbus RTU IEC870-5-104
Modbus TCP
DI, DO
Integration of different
primary systems
This is why: SAVR - Automatic Secondary Regulation of Voltage and Reactive Power
EGÚ Praha Engineering,a.s.
Principles of automation of voltage and reactive power regulation
EGÚ Praha Engineering,a.s.
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWINGC
CERTIFICATION
Test the limits at Pmin
Umin and Umax
Reachable PQ diagram
Test the limits at Pmax
Umin and Umax
EGÚ Praha Engineering,a.s.
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWINGC
After the certification
EGÚ Praha Engineering,a.s.
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWINGC
The conceptual solutions
ARN - substation or dispatch
center
SRU - Power plant
ARN and SRU – substation or Power plant
1.
2.
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWING
EGÚ Praha Engineering,a.s.
ČEZ Nord
Power plant Prunéřov 1 Heat plant
Trmice
Industrial
power plants
Chemopetrol
Power plant Ledvice
Heat
plant Komořny
ARN
SRU SRU
Control
system
Technology Technology
Power plant Power plant
Dispatching, substation
n
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWING
ARN - substation or dispatch
center
SRU - Power plant
The conceptual solutions
EGÚ Praha Engineering,a.s.
Substation
Rahman
Wind park
Alpha
ARN
SRU
Control
system
Technology
Substation, power plant
Wind park
CAS
Wind park
Topolog
Wind park
Ventus
ARN and SRU – substation or Power plant
The conceptual solutions
WITH THE INCREASE OF GRID COMPLEXITY, THE NEED
FOR ITS AUTOMATIZATION IS GROWING
EGÚ Praha Engineering,a.s.
Key technical steps of implementation:
REALIZATION OF SINGLE REGULATED PRODUCTION SITES
SHOULD BE JUST A QUESTION OF MONTHS
Initial project Developing (for each generator) the initial project providing
compatibility of technical devices: dispatching <=> generation
Regulator’s
connecting project
Developing the project for connecting regulator to the
technology of generation
Regulator’s
technology delivery Supply of regulating technical and programming devices
Regulator’s
connection Connecting the regulator to the generator’s technology
Regulator’s
testing
Assembly verification , carrying out the pre-complex and
complex tests and training the staff
Service Set prerequisites and process of prophylactic and irregular
maintenance
SAVR
supplier
Local
designer
SAVR
supplier
Assembler
or
Operator
SAVR
supplier
SAVR
supplier +
Operator
Realization takes 6 - 12 months, depending on technical conditions and
operational potential (shut downs etc.) of the power plants
1.
2.
3.
4.
5.
6.
EGÚ Praha Engineering,a.s.
First system SAVR in the Czech
Republic was designed and installed
by the EGU Praha Engineering, a. s.
TSO
Important realization of SAVR
System power plants R E S
First system SAVR in the Romania
was designed and installed
by the EGU Praha Engineering, a. s.
SAVR
Hradec u Kadaně SAVR Tariverde
EGÚ Praha Engineering,a.s.
First system SAVR in the Czech Republic was designed and installed
by the EGU Praha Engineering, a. s.
DSO
Fossil power plants R E S
SAVR
Horní Životice
Industrial areas
SAVR
ArcelorMittal
SAVR
ČEZ Morava
Important realization of SAVR
EGÚ Praha Engineering,a.s.
ARN
SRU SRU
Control
system
Technology Technology
Power plant
Dětmarovice
Dispatching Ostrava
Realization of SAVR Ostrava
ARN – dispatch center
Ostrava
SRU - Power plant
Třebovice
Dětmarovice
EGÚ Praha Engineering,a.s.
Power plant
Třebovice
/Commissioning : Year 2002/
Control system
Mikrodispečink Diagnostics
and archiving
PCM
ARN
DSO Power plants
PCM
ARN Ostrava
PCM
Communication line
Dispatch Power plants
Terciary
regulation
Czech Republic
Realization of secondary voltage control in the
industrial enterprises
SAVR Unipetrol
SAVR ArcelorMittal
Benefit: The power operators and producers
are no longer penalized for not keeping the power
factor and for Q overflows
They support and help the power
system of 110 kV
SAVR Unipetrol
• Industrial enterprise - production of chemicals (including petrol and diesel)
• Control of the generators TG10, TG11, TG12, TG13 and TG14 (red in the
diagram)
• Generators are connected to the network 6 kV
• Voltage of 110 kV control
SAVR Mittal
• Industrial enterprise - iron processing
• Control of the generators TG1-TG8, TG10
• Control of the transformers (number: 28)
• Checking the voltage at 53 substations
• Generators are connected to the network 6 kV
• Voltage of 22 kV control
SAVR Mittal
1
QM1
Raška Karel
T643T644T5002T5001
1
2
T20 T21 T22 T11 T13
T12 T6
T9 T10
67
T14
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3.
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4.
104 84 46 35 21 26 15
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P250
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k.č.7
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k.č.2
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k.č.20
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k.č.34
ELNA
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k.č.3
AGLO 3
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BL1
k.č.23
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20
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117
38 1439
107 113
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7
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48 6
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Kyslikárny
1 3 2
Lešetín.
Autokola obj.9
obj.2 Slév.1
Slév.2 -6kV
Slév.2 -22kVZáv.15-22kV
Zu
šle
ch
. Z15
6kVKS
RHJ26
Aglo.1
Aglo. 3
Řed.
UOD
Ocel.SN
ZPO1
VP
Koks.1TVP
OSO Kov.1
P
800 Šrot.
Koks.21
Koks.2
RHJ22ELO 6kV
R11 R21
CK6kV
CK22kV
RN1 RN2
HAV.
SJVR10 R20
ELO 22kV
HSCC
Kunčice 110kV
2
222222
TG10
88
TG6
6
37
16
1612
17 3
VTK 1
19
Vratimov R110kV
10
76
6
ZPO2-6kV
1
3
Kov.2
2
2
6
10
2034
L3
L4
R22kV
PP 2
T1103
T201
T202
T1101 T1102
R22kV
PP 1R22kV
PP 3
14
10
128
7
810
22
6
15
46
38
2
18
37
1
7
12
3 7
R22kV
Minihuť
R6kV MH
Válc. P1500
R22kV MH
Minihuť R110kV
TM1TM2TM3
L1 L2 L3
L5003
5
Od
Do
Měsíc - rokJméno Podpis
PŘENOSY A ŘAZENÍ NH
76
71
12
1 5 1 2
L14
42
L98SME
T101T101 T102 T102
R1.15 R1.1 HRM2.1a HRM1.1a
ČOV Ostravice ČS Hrabůvka
3 4
ČS Vítk. Aglo R15/1
5kV
k.4 k 59
22kV
M1
7 19 20
19 20
3
17
Poslední úprava :
1316 6
T1
TG9
7
111
4
M3T M3 M3
44
9
17
4
48
2665
9
22
3
12
9
8.8.2001
VálcovnaP 1500
VH SJV
SJV
L5003
Autokola
21
1
20
2
122
1
71831
2011
10811
8
6 24 78
3129
246
1312 181
114 116
11 1 5 12
31 32
78
49
94
SAVR Mittal
Excitation
systems
G
TG1
Excitation
systems
G
TG10
SAVR
SCADA
Dispatch ČEZ
IEC870-5-101
IEC870-5-104
1
QM1
Raška Karel
T643T644T5002T5001
1
2
T20 T21 T22 T11 T13
T12 T6
T9 T10
67
T14
T23
T622 T621
T16 T15
T2T3 T5T8T4T7
363
3 91
4
1 1
2
28
2
2 34
3629
44
22242
Z
1.
2.
3.
5.
4.
104 84 46 35 21 26 15
110 111
ÚK k.č.2
k.č.32
k.č.33
k.č.1
k.č.24
k.č.18 KD
ELNA
ELNA
P250
BLOK 1
HAV
SJV
k.č.7
SL.2
k.č.2
P250
k.č.20
BLOK.1
k.č.34
ELNA
k.č.1
ELNA
k.č.3
AGLO 3
k.č.8
BL1
k.č.23
ÚK
k.č.10
ELNA
13 12
P250
T191
T291D.V.
P800
12 13
VP
k.č.15T291T191
D.V.
M2
VTK 2
186460
53 44
23 1325
30
43 42
15
17 6 26 11
17 13
11
15
5
86
4 21
512
14
1
57
7
36
18
3
3
1
3
43351
13
423 19 20
14 1
VTK
120
3
1 10 1
1323
3
27
125
20
22
TG4TG7 TG8 TG1 TG2 TG3TG5
117
38 1439
107 113
11
7
5 274
48 6
32 31
13
8
23 24
38
5
5049
26
17
7
2 9 5
1317
11
9 6
918
25
179
28
2
17
20 21
27
1
3
14
22 715 20
11
19
2782
3
06
3
120
4 2
10
3
55
1
9
4
121
102 101 100 58 25
122
1
10
22 19
12
90
5
94 96 98
13 33 14 22 8
81 83
10 7
22
20
31
1
15
30
75
114
1512
103 105
9
132220 26
13
1 23
9
85
11 213 19
8
8
9
80
20
2399 91
14
21
87
14
7
17
19
18 19
16
34
7 41
21
42 50
ELNA.
Kyslikárny
1 3 2
Lešetín.
Autokola obj.9
obj.2 Slév.1
Slév.2 -6kV
Slév.2 -22kVZáv.15-22kV
Zu
šle
ch
. Z15
6kVKS
RHJ26
Aglo.1
Aglo. 3
Řed.
UOD
Ocel.SN
ZPO1
VP
Koks.1TVP
OSO Kov.1
P
800 Šrot.
Koks.21
Koks.2
RHJ22ELO 6kV
R11 R21
CK6kV
CK22kV
RN1 RN2
HAV.
SJVR10 R20
ELO 22kV
HSCC
Kunčice 110kV
2
222222
TG10
88
TG6
6
37
16
1612
17 3
VTK 1
19
Vratimov R110kV
10
76
6
ZPO2-6kV
1
3
Kov.2
2
2
6
10
2034
L3
L4
R22kV
PP 2
T1103
T201
T202
T1101 T1102
R22kV
PP 1R22kV
PP 3
14
10
128
7
810
22
6
15
46
38
2
18
37
1
7
12
3 7
R22kV
Minihuť
R6kV MH
Válc. P1500
R22kV MH
Minihuť R110kV
TM1TM2TM3
L1 L2 L3
L5003
5
Od
Do
Měsíc - rokJméno Podpis
PŘENOSY A ŘAZENÍ NH
76
71
12
1 5 1 2
L14
42
L98SME
T101T101 T102 T102
R1.15 R1.1 HRM2.1a HRM1.1a
ČOV Ostravice ČS Hrabůvka
3 4
ČS Vítk. Aglo R15/1
5kV
k.4 k 59
22kV
M1
7 19 20
19 20
3
17
Poslední úprava :
1316 6
T1
TG9
7
111
4
M3T M3 M3
44
9
17
4
48
2665
9
22
3
12
9
8.8.2001
VálcovnaP 1500
VH SJV
SJV
L5003
Autokola
21
1
20
2
122
1
71831
2011
10811
8
6 24 78
3129
246
1312 181
114 116
11 1 5 12
31 32
78
49
94
Signalization
and measuring
Czech Republic
Realization of secondary regulation of 22 kV
voltage
SAVR Kopřivná
(First controlled small wind source
in the 22 kV network in the Czech Republic)
2 x WTGs Enercon (2.3 MW)
SAVR Kopřivná… 22 kV
Czech Republic
ROMANIA
SAVR Tariverde
400 kV
110 kV
33 kV
22 kV
Set point
Range
Q Q Q
The Action Quantity for Control of Voltage 400 kV is the Reactive Power
SAVR Tariverde
• Control of voltage 400 kV, Control of active power
• New: Control of reactive power on 400 kV
• New: Priority Control - Authority allocation (Local Dispatching center vs TSO Dispatching center)
SAVR Tariverde
SAVR Tariverde
SAVR Tariverde
SAVR Rahman
SAVR Rahman
110 kV
33 kV
400 kV
0,4 kV 0,4 kV
SAVR
EGU
SAS
ABB
RTU
EGU
IEC870-5-104
IEC870-5-104
IEC870-5-104
IEC870-5-104
Diagnostic
workplace
FCU Enercon
FCU Enercon
FCU Enercon
PPC Vestas
Local
DSO TSO
MODBUS TCP
SAVR ČEZ Sever - voltage control of 110 kV grid with:
Power plants: Prunéřov 1, Ledvice, Trmice, Unipetrol and Komorany
SAVR ČEZ Morava - voltage control of 110 kV grid with:
Power plants: Detmarovice, Trebovice, Arcelor Mittal Ostrava, Biocel Paskov, Horní Loděnice, Red Hill
SAVR ČEZ Střed - voltage control of 110 kV grid with:
Power plants: Mělník 1, Mělník 2, AGCZ, Plzeňská teplárenská
Reference: Classic Power Plants
Country: CZECH REPUBLIC
SAVR Tariverde - voltage control of 400 kV grid with:(660 MW … installed capacity)
1. WP Fantanele East
2. WP Fantanele West
3. WP Cogealac
Investor: ČEZ Romania
SAVR Rahman - voltage control of 400 kV grid with: (325 MW … installed capacity … so far)
1. WP Alpha N1,2,3
2. WP Ventus
3. WP Cas
4. WP Topolog
5. ……………..
Investor: VERBUND Austria
Reference: WIND PARKS
Country: ROMANIA
FEW COMMENTS:
• The need for regulation of U and Q is and will be obvious. The emerging development of electricity system decentralization is in this respect of particular and determining importance
• The implementation of the SAVR system itself is conditional on the technical level of the relevant part of the electrical system - availability of controllable action members, communication tools, profiles and processes atc.
• Next steps to developing the particular projects should and will be the reflection of developing trends in energy sector: decentralization ..., digitization ..., robotics ..., IoT applications ..., CS ..., island operations, including the virtual power plants, accumulation ...
• Important question is also the motivation of the energy producers i.e. not only legislative requirements (Grid Codes) but also a financial consideration (ancillary services ...)
SAVR
EGÚ PRAHA ENGINEERING, a.s.
COMPANY – CONTACT DATA:
Jaromír Beran … Director of the Company
Phone: + 420 267 193 436
Mobil: + 420 603 229 161
e-mail: [email protected]
www.egu-prg.cz
Petr Čech … Head of the Department:
Control of Power Network Parameters and Control Systems
Phone: + 420 267 193 574
Mobil: + 420 603 247 976
e-mail: [email protected]
www.egu-prg.cz
EGÚ PRAHA ENGINEERING, a.s.
EGÚ Praha Engineering, a. s.; Podnikatelská 539, 190 11 Praha 9 - Běchovice; CZECH REPUBLIC