2. OleksandrHusev,BRAS,2016
Lecturer:
Oleksandr Husev, PhD
2Email: oleksandr.husev@gmail.com
Skype name: husev_oleksandr
Associate professor of Chernihiv National
University ofTechnology.
Senior researcher of Tallinn University of
Technology, Power electronics group!
3. OleksandrHusev,BRAS,2016
Outline:
• 1. Introduction;
• 2.Traditional vs Distributed (Decentralized) grid;
• 3. Renewable energy systems;
• 4.Vehicle to Grid (V2G);
• 5. Dc-microgrid. HVDC and Solid StateTransformer;
• 6. Energy Internet! Smart metering approach;
• 7. Conclusions: smart grid concept. Is it possible in
Ukraine? 3
4. OleksandrHusev,BRAS,2016
Outline:
• 1. Introduction;
2.Traditional vs Distributed (Decentralized) grid;
3. Renewable energy systems;
4.Vehicle to Grid (V2G);
5. Dc-microgrid. HVDC and Solid StateTransformer;
6. Energy Internet! Smart metering approach;
7. Conclusions: smart grid concept. Is it possible in
Ukraine?
4
6. OleksandrHusev,BRAS,2016
Tallinn University of
Technology
(TUT or TTU.ee)
6
• Public university
• Second biggest university in Estonia
• Only technical university in Estonia
• Located in the capital
of Estonia – Tallinn
• Fully accredited programs
• Modern facilities and computer labs,
free wifi
• Campus university with newly
renovated dormitories
7. OleksandrHusev,BRAS,2016
TUT in numbers
7
• Date of establishment: 1918
• 8 faculties
• 35 departments and 112 chairs
• 13 research centers
• 21 labs
• 10 affiliated institutions, including 4
regional colleges
• 3 languages: Estonian, Russian and
English
• 13 500 students, about 800 foreign
students
• 2000 employees
9. OleksandrHusev,BRAS,2016
9
DC Power
Source
AC Side
(Low, Medium, High
Voltage)
Power
Electronics
Devices
PMSG
Renewable Energy Sources
DC Side
(1.2V – 800kV)
AC Power
Source
Traditional Energy Sources
Object of Research
Control and conversion
of electric power!
12. OleksandrHusev,BRAS,2016
Smart grid?
A smart grid is an electrical
grid which includes a variety of
operational and energy measures
including smart meters, smart
appliances, renewable energy
resources, and energy efficiency
resources. Electronic power
conditioning and control of the
production and distribution of
electricity are important aspects
of the smart grid
12
13. OleksandrHusev,BRAS,2016
Outline:
1. Introduction;
• 2. Traditional vs Distributed (Decentralized) grid;
3. Renewable energy systems;
4. Vehicle to Grid (V2G);
5. Dc-microgrid. HVDC and Solid State Transformer;
6. Energy Internet! Smart metering approach;
7. Conclusions: smart grid concept. Is it possible in
Ukraine? 13
17. OleksandrHusev,BRAS,2016
Outline:
1. Introduction;
2. Traditional vs Distributed (Decentralized) grid;
• 3. Renewable energy systems;
4. Vehicle to Grid (V2G);
5. Dc-microgrid. HVDC and Solid State Transformer;
6. Energy Internet! Smart metering approach;
7. Conclusions: smart grid concept. Is it possible in
Ukraine?
17
18. OleksandrHusev,BRAS,2016
Photovoltaics:
general principle
18
• One cell 0.3 W - 1.2 V;
• Solar irradiation 1300
W/m2
• Efficiency up to 40%.
Normally 18 – 20 % (180
W/m2)
• Solar panel cost 0.5-10
$/W. Normally 0.8 $/W.
• Solar energy cost is about
0.3 - 0.8 $/kWh.
33. OleksandrHusev,BRAS,2016
Outline:
1. Introduction;
2. Traditional vs Distributed (Decentralized) grid;
3. Renewable energy systems;
• 4. Vehicle to Grid (V2G);
5. Dc-microgrid. HVDC and Solid State Transformer;
6. Energy Internet! Smart metering approach;
7. Conclusions: smart grid concept. Is it possible in
Ukraine?
33
37. OleksandrHusev,BRAS,2016
Charge station?
37
There is 167 quick chargers in Estonia. 102 quick chargers are in towns
and 65 by roads.
DC quick charger with nominal capacity 50 kW meeting the CHAdeMO
standard
AC charging socket Type 2, nominal capacity 22 kW
38. OleksandrHusev,BRAS,2016
Outline:
1. Introduction;
2. Traditional vs Distributed (Decentralized) grid;
3. Renewable energy systems;
4. Vehicle to Grid (V2G);
• 5. Dc-microgrid. HVDC and Solid State Transformer;
6. Energy Internet! Smart metering approach;
7. Conclusions: smart grid concept. Is it possible in
Ukraine?
38
41. OleksandrHusev,BRAS,2016
Problems of DC system:
41
Long way transmission system is not effective solution
because of high conduction losses.
R
V
P
RP 22
LOSS )(I
42. OleksandrHusev,BRAS,2016
AC system:
42
In 1887 Nicola Tesla files his first patents for a two-
phase AC system with four electric power lines,
which consists of a generator, a transmission system
and a multi-phase motor.
43. OleksandrHusev,BRAS,2016
AC system:
43
• In 1889 Michael Dolivo-Dobrowolsky (Russian, naturalized
Swiss), chief electrician at the AEG company in Berlin,
builds on the basic ideas of Tesla and Ferraris and improves
them considerably. He designs the three-phase cage
induction motor, which is still widely used today. In the
beginning of 1889, his first motor is running properly.
44. OleksandrHusev,BRAS,2016
AC system as a winner!
44
• During this period (1880s), DC was more widely popular, but it
was becoming evident that AC was more efficient for long-
distance power transmission due to the ability to easily change
voltages using a transformer.
• In defense of DC, Thomas Edison carried out a campaign against
the use of AC power, claiming the danger of AC, publicly killing
animals, and lobbying against the use of AC in state legislatures.
• AC ending up winning “the current war”!
46. OleksandrHusev,BRAS,2016
Problems of AC system:
46
• Difficult to facilitate power transmission between
different countries that use AC at differing voltages
and frequencies ;
• More dangerous for people;
• Difficult to control power flow (active, reactive and
non-active power).
61. OleksandrHusev,BRAS,2016
Outline:
1. Introduction;
2. Traditional vs Distributed (Decentralized) grid;
3. Renewable energy systems;
4. Vehicle to Grid (V2G);
5. Dc-microgrid. HVDC and Solid State Transformer;
• 6. Energy Internet! Smart metering approach;
7. Conclusions: smart grid concept. Is it possible in
Ukraine?
61
62. OleksandrHusev,BRAS,2016
Internet?
62
The Internet is the global system of
interconnected computer networks that use
the Internet protocol suite (TCP/IP) to link billions of
devices worldwide. It is a network of networks that
consists of millions of private, public, academic,
business, and government networks of local to
global scope, linked by a broad array of electronic,
wireless, and optical networking technologies.
63. OleksandrHusev,BRAS,2016
Energy Internet?
63
The Energy Internet is the global system of
interconnected networks that is used for electrical energy
conversion and transmission including data centers that
perform control and analysis of power flow.
67. OleksandrHusev,BRAS,2016
Smart metering:
67
1. A smart meter is an electronic device that records
consumption of electric energy in intervals of an
hour or less and communicates that information at
least daily back to the utility for monitoring and
billing.
2. Producer + Consumer = Prosumer.
3. Flexible tariff policy!
70. OleksandrHusev,BRAS,2016
Outline:
1. Introduction;
2. Traditional vs Distributed (Decentralized) grid;
3. Renewable energy systems;
4. Vehicle to Grid (V2G);
5. Dc-microgrid. HVDC and Solid State Transformer;
6. Energy Internet! Smart metering approach;
• 7. Conclusions: smart grid concept. Is it possible in
Ukraine?
70
71. OleksandrHusev,BRAS,2016
Smart grid concept:
71
• Integration of renewable energy to the grid;
• Decentralization of power sources;
• Solid state transformer implementation;
• The combination of the DC and AC link;
• Full controllability and interoperability. Increased reliability;
• Vehicle to grid;
• Flexible tariff policy (Smart Metering).