WO2012168809A2 - Power systems interconnection method - Google Patents
Power systems interconnection method Download PDFInfo
- Publication number
- WO2012168809A2 WO2012168809A2 PCT/IB2012/052517 IB2012052517W WO2012168809A2 WO 2012168809 A2 WO2012168809 A2 WO 2012168809A2 IB 2012052517 W IB2012052517 W IB 2012052517W WO 2012168809 A2 WO2012168809 A2 WO 2012168809A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- energy storage
- power systems
- equipment
- networks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/34—Arrangements for transfer of electric power between networks of substantially different frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
Definitions
- the invention relates to electric power industry, in particular, to power systems with electrical alternating current (AC) networks, more specifically, to the methods of their interconnection.
- AC electrical alternating current
- DC back-to-back link is a converter substation designed for conversion ofAC into DC,and subsequentconversion ofDC into AC with initial orotherfrequency.
- GOST 24291-90 Electrode Power Plants and Electrical Networks. Terms and Definitions' ) .
- the disadvantages of BBL include manufacturing of complex and expensive power equipment, execution of a large volume of civil and erection works with a long payback period, substantial financial costs , and less reliability of high-voltage power semiconductor plants in comparison with the main equipment of power systems limits their widespread use ;
- the present invention is aimed at power system interconnection problem solution with the help of such method that will allow for higher reliability and quality, as well as for minimization of financial costs associated with its implementation.
- the solution of the task set provides the suggested method for interconnection of power systems with AC networks, each of which is characterized by its technical characteristics of electricity through the use of, at least, one energy storage (ES) containing equipment that ensures energy storage and its usage. This is performed due to the fact that the equipment providing energy storage and electric power consumption is connected to networks of one system, and equipment involved in the usage of stored energy and generating electricity is connected to networks of the other system, and in this case the position of these power systems can be rearranged.
- ES energy storage
- period, amplitude, frequency and voltage refers only to energy storage system equipment , generating electricity and the power system to which it is connected;
- FIG. 1, A equipment (3) of energy storage (ES), accumulating power is connected to power system (1), while equipment (4) of energy storage (ES), generating electricity, is connected to the system (2) .
- FIG. 1, B equipment (3) of energy storage (ES), accumulating power is connected to power system (2), while equipment (4) of energy storage (ES), generating electricity, is connected to the system (1).
- the method of power system interconnection implies that the equipment (3) of energy storage (EC), providing energy storage, is connected to power system (1), which has one characteristics of electric power , while equipment (4) of energy storage (ES), generating electricity, is connected to the system (2) , which has other characteristics of electricity (Fig.1, A). (Fig.1, ⁇ ).
- the equipment (4) of energy storage (ES) which generates electricity should correspond to the technical characteristics of electric power system (2), while the equipment (3) of energy storage (ES), providing energy storage, should match the specifications of electric power system (1).
- This method allows for changing positions of power systems (Fig. 1, B). While changing the positions of power system (1) and power system (2), the equipment (4) of energy storage (ES) , generating electricity , should correspond to the technical characteristics of electric power system (1), and the equipment (3) of energy storage (ES) , providing energy storage, should conform to specifications of power system (2).
- Air (gas) energy storage Air (gas) energy storage .
- ASGTP air-storage gas turbine plants
- ASGTPs include also gas turbine unit, several motor driven compressors, and air-turbines with generators .
- Upper reservoir of pumped-storage plant can be used as hydraulic energy storage .
- the invention can be implemented under all schemes of pumped-storage plants and for any layout of PSP hydropower equipment which includes motor driven pumps, turbines with electric generators, reversible pumping units.
- the procedure of power system interconnection is similar to that in the example with air (gas) energy storage.
- Pump electric motors are connected to power system (1) , and hydroturbine generators - to system (2).
- Flywheels and super flywheels are used as mechanical energy storage .
- Electric motor rotates the flywheel.
- the flywheel stores energy that is subsequently converted into electrical energy in the electric generator. It is possible to use reversible motors - generators .
- Electric motor which rotates the flywheel storing the energy is connected to power grid (1) networks.
- the energy of rotating flywheel is converted into electrical energy in electric generator, connected to power grid (2) networks.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to electric power industry, in particular, to power systems with electrical alternating current networks, more specifically, to the methods of power systems interconnection. The basis of the present invention is the task to interconnect power systems with the help of the method that will allow to improve the reliability and quality of their functioning, as well as to minimize the financial costs associated with its implementation. The method of interconnection of power systems with AC networks, each of which is characterized by its technical characteristics of electricity through the use of at least one energy storage device (ES), which contains the equipment providing energy storage and its usage. According to the invention the equipment (3), providing energy storage and consuming electricity, is connected to one power system networks, and equipment (4) participating in the usage of stored energy and generating electricity is connected to the other power system networks, thus, ensuring possibility to change the position of these power systems.
Description
The invention relates to electric power industry, in
particular, to power systems with electrical alternating current (AC) networks,
more specifically, to the methods of their interconnection.
In the countries of modern world there are a lot of
power systems with electrical alternating current networks, each of which is
characterized by its technical characteristics of electricity, i.e., period,
amplitude, frequency and voltage of alternating electric current.
In order to optimize theelectric power sector
operation it is necessary to integratethe abovementionedpower systemsinto a
single power grid.
In the electric power industrythere areseveral ways
known for interconnection of individualpower systems intoa power grid:
- fullsynchronous interconnection of bothnetworks,
whichenvisagesa directconnection of one system alternating current network end
to the beginning of the other system alternating current network. In this case,
it is necessary for the power systems to be interconnected to meet the
requirements of unified norms which integrate theprocess of
production,transformation,transmission, distribution, power consumption, and
creation of a singlecontrol center.
The disadvantages of this method of power systems
interconnection are related to large capital costs for implementation of the
abovementioned measures and long-term implementation;
- non-synchronous interconnection through DC
substations (back-to-back links) located at the ends of existing AC
interconnection lines. DC back-to-back link (BBL) is a converter substation
designed for conversion ofAC into DC,and subsequentconversion ofDC into AC with
initial orotherfrequency.(GOST 24291-90 'Electrical Power Plants and Electrical
Networks. Terms and Definitions' ) . The disadvantages of BBL include
manufacturing of complex and expensive power equipment, execution of a large
volume of civil and erection works with a long payback period, substantial
financial costs , and less reliability of high-voltage power semiconductor
plants in comparison with the main equipment of power systems limits their
widespread use ;
- dedicated work of power stationson the basis of
radialscheme orsupply of dedicatedunits ('islands') through AC and/or DC power
transmission. The implementationof this methodalso requires quite
substantialcosts.
- hybrid interconnection combining theelements ofthe
abovementionedmethods (with the same problems which are characteristic of each
individualmethod).
In the patentliterature there aredocuments
thatbasicallydescribe how power systems with AC networks are interconnected
withapplication of DC back-to-back links. For example, in the following
patents: RU2354024, RU2010103504, RU2260233, UA52793, RU44891, RU50726,
RU50726, RU2354023, UA12730, JP11410302, JP1123378, JP1123379, JP11410301,
US5055702.
However, these documents provide solutions which
are expensive for implementation, complex in technical terms, and principally
differ from the method suggested in the invention that is presented below in
the description.
The present invention is aimed at power system
interconnection problem solution with the help of such method that will allow
for higher reliability and quality, as well as for minimization of financial
costs associated with its implementation.
The solution of the task set provides the
suggested method for interconnection of power systems with AC networks, each of
which is characterized by its technical characteristics of electricity through
the use of, at least, one energy storage (ES) containing equipment that ensures
energy storage and its usage. This is performed due to the fact that the
equipment providing energy storage and electric power consumption is connected
to networks of one system, and equipment involved in the usage of stored energy
and generating electricity is connected to networks of the other system, and in
this case the position of these power systems can be rearranged.
The following results are achieved with
application of the present invention:
- compliance with the requirement of uniform
technical characteristics of electricity , i.e., period, amplitude, frequency
and voltage refers only to energy storage system equipment , generating
electricity and the power system to which it is connected;
- possibility of electric power export and import
from one power system into the other .
The essence of the invention is illustrated by the
following description and drawing (Fig. 1), where block diagram of the power
system interconnection method is presented .
(Fig. 1, A): equipment (3) of energy storage (ES),
accumulating power is connected to power system (1), while equipment (4) of
energy storage (ES), generating electricity, is connected to the system (2)
.
(Fig. 1, B): equipment (3) of energy storage (ES),
accumulating power is connected to power system (2), while equipment (4) of
energy storage (ES), generating electricity, is connected to the system
(1).
The method of power system interconnection implies
that the equipment (3) of energy storage (EC), providing energy storage, is
connected to power system (1), which has one characteristics of electric power
, while equipment (4) of energy storage (ES), generating electricity, is
connected to the system (2) , which has other characteristics of electricity
(Fig.1, A). (Fig.1, А).
The equipment (4) of energy storage (ES) which
generates electricity should correspond to the technical characteristics of
electric power system (2), while the equipment (3) of energy storage (ES),
providing energy storage, should match the specifications of electric power
system (1).
This method allows for changing positions of power
systems (Fig. 1, B). While changing the positions of power system (1) and power
system (2), the equipment (4) of energy storage (ES) , generating electricity ,
should correspond to the technical characteristics of electric power system
(1), and the equipment (3) of energy storage (ES) , providing energy storage,
should conform to specifications of power system (2).
Let us consider the suggested method of power
system interconnection with the help of the example of the most widely used
energy storages.
Air (gas) energy storage .
Various capacities are used as air (gas) energy
storages including cavities in the earth's crust , mine workings which are used
in air-storage gas turbine plants (ASGTP). ASGTPs include also gas turbine
unit, several motor driven compressors, and air-turbines with generators .
As applied to air-storage gas turbine plant the
sequence of power system interconnection should be as follows: compressors,
whose engines are connected to the electric networks of power system (1) ,
inject air (gas) into capacity . Then air turbines use the energy of compressed
air of power storage, and generators of air turbines connected to power system
electric networks ( 2), generate electricity into it. Thus, interconnection of
power systems is performed.
Hydraulic power storage.
Upper reservoir of pumped-storage plant (PSP) can
be used as hydraulic energy storage .
The invention can be implemented under all schemes
of pumped-storage plants and for any layout of PSP hydropower equipment which
includes motor driven pumps, turbines with electric generators, reversible
pumping units. The procedure of power system interconnection is similar to that
in the example with air (gas) energy storage. Pump electric motors are
connected to power system (1) , and hydroturbine generators - to system
(2).
Mechanical energy storage
Flywheels and super flywheels are used as
mechanical energy storage .
Electric motor rotates the flywheel. In this case,
the flywheel stores energy that is subsequently converted into electrical
energy in the electric generator. It is possible to use reversible motors -
generators .
Interconnection of power systems is performed in
this case in the following way. Electric motor which rotates the flywheel
storing the energy is connected to power grid (1) networks. The energy of
rotating flywheel is converted into electrical energy in electric generator,
connected to power grid (2) networks.
The method of power system interconnection
suggested in the invention allows :
- - to perform power system interconnection by means only of functional, operational staff actions that do not require substantial financial costs and design changes;
- to perform export - import of electrical energy
from one power system into the other .
Claims (1)
1. The method of interconnection of power systems with AC
networks, each of which is characterized by its technical characteristics of
electricity (ES), by using at least one energy storage device that contains the
equipment that provides energy storage and its usage, c h a r a c t e r i z
e d in that the equipment (3) providing energy storage and consuming
electricity, is connected to networks of one power system, and the equipment
(4) participating in the usage of stored energy and generating electricity is
connected to the other power system networks, where power systems can change
their positions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UA201107065 | 2011-06-06 | ||
| UA2011007065 | 2011-06-06 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2012168809A2 true WO2012168809A2 (en) | 2012-12-13 |
| WO2012168809A3 WO2012168809A3 (en) | 2013-03-07 |
| WO2012168809A4 WO2012168809A4 (en) | 2013-06-06 |
Family
ID=46087397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2012/052517 Ceased WO2012168809A2 (en) | 2011-06-06 | 2012-05-18 | Power systems interconnection method |
Country Status (3)
| Country | Link |
|---|---|
| LT (1) | LT5851B (en) |
| RU (1) | RU2011154461A (en) |
| WO (1) | WO2012168809A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2703983C1 (en) * | 2018-07-11 | 2019-10-23 | Анатолий Михайлович Криштоп | Electric hydraulic accumulating transformer (ehat) and method of functioning of ehat (versions) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01123379A (en) | 1987-10-20 | 1989-05-16 | Eastman Kodak Co | Apparatus for generating rim position signal usable when checking position of address element for mail |
| JPH01123378A (en) | 1987-11-06 | 1989-05-16 | Sumitomo Electric Ind Ltd | optical character reader |
| US5055702A (en) | 1989-08-24 | 1991-10-08 | Amor Bhattacharya | Method and apparatus for controlling application of electrical power |
| JPH11110302A (en) | 1997-09-29 | 1999-04-23 | Sharp Corp | Semiconductor storage device and sales processing device having the same |
| JPH11110301A (en) | 1997-06-26 | 1999-04-23 | Digital Equip Corp <Dec> | Warm swap of mirrored writeback cache module |
| RU44891U1 (en) | 2004-11-23 | 2005-03-27 | Ивановский государственный энергетический университет | DEVICE FOR COMBINING THREE-PHASE POWER SYSTEMS BASED ON MAGNETIZED TRANSFORMERS |
| RU2260233C1 (en) | 2004-05-27 | 2005-09-10 | Кочергин Игорь Николаевич | Power station |
| RU50726U1 (en) | 2004-11-23 | 2006-01-20 | Ивановский государственный энергетический университет | DEVICE FOR COMBINING THREE-PHASE POWER SYSTEMS BASED ON THE CONTROL OF MAGNETIZATION OF TWO-WAY REACTORS |
| UA12730U (en) | 2005-09-26 | 2006-02-15 | Ihor Vasyliov Kompanieischykov | Bag filter |
| RU2354024C1 (en) | 2007-10-08 | 2009-04-27 | Владимир Сергеевич Мартыненко | Integrated power system and operating procedure for integrated power system |
| RU2354023C1 (en) | 2007-10-08 | 2009-04-27 | Владимир Сергеевич Мартыненко | Integrated power system |
| RU2010103504A (en) | 2010-02-02 | 2010-06-27 | Юрий Васильевич Потапов (RU) | ELECTRIC AC NETWORK |
| UA52793U (en) | 2010-03-04 | 2010-09-10 | Божок Аркадий Михайлович | Measuring device for diesel power |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1309173A1 (en) * | 1985-04-01 | 1987-05-07 | Всесоюзный Государственный Проектно-Изыскательский И Научно-Исследовательский Институт Энергетических Систем И Электрических Сетей "Энергосетьпроект" | Device for asynchronous controlled coupling between two power system |
| JPH1123378A (en) | 1997-06-27 | 1999-01-29 | Aisin Aw Co Ltd | Temperature sensor |
| US6026349A (en) * | 1997-11-06 | 2000-02-15 | Heneman; Helmuth J. | Energy storage and distribution system |
| JP5355907B2 (en) * | 2008-02-29 | 2013-11-27 | 株式会社東芝 | Power system stabilization system |
| EP2200144A1 (en) * | 2008-12-19 | 2010-06-23 | Siemens Aktiengesellschaft | Arrangement to stabilise an electric power grid |
-
2011
- 2011-12-23 LT LT2011108A patent/LT5851B/en not_active IP Right Cessation
- 2011-12-30 RU RU2011154461/07A patent/RU2011154461A/en not_active Application Discontinuation
-
2012
- 2012-05-18 WO PCT/IB2012/052517 patent/WO2012168809A2/en not_active Ceased
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01123379A (en) | 1987-10-20 | 1989-05-16 | Eastman Kodak Co | Apparatus for generating rim position signal usable when checking position of address element for mail |
| JPH01123378A (en) | 1987-11-06 | 1989-05-16 | Sumitomo Electric Ind Ltd | optical character reader |
| US5055702A (en) | 1989-08-24 | 1991-10-08 | Amor Bhattacharya | Method and apparatus for controlling application of electrical power |
| JPH11110301A (en) | 1997-06-26 | 1999-04-23 | Digital Equip Corp <Dec> | Warm swap of mirrored writeback cache module |
| JPH11110302A (en) | 1997-09-29 | 1999-04-23 | Sharp Corp | Semiconductor storage device and sales processing device having the same |
| RU2260233C1 (en) | 2004-05-27 | 2005-09-10 | Кочергин Игорь Николаевич | Power station |
| RU44891U1 (en) | 2004-11-23 | 2005-03-27 | Ивановский государственный энергетический университет | DEVICE FOR COMBINING THREE-PHASE POWER SYSTEMS BASED ON MAGNETIZED TRANSFORMERS |
| RU50726U1 (en) | 2004-11-23 | 2006-01-20 | Ивановский государственный энергетический университет | DEVICE FOR COMBINING THREE-PHASE POWER SYSTEMS BASED ON THE CONTROL OF MAGNETIZATION OF TWO-WAY REACTORS |
| UA12730U (en) | 2005-09-26 | 2006-02-15 | Ihor Vasyliov Kompanieischykov | Bag filter |
| RU2354024C1 (en) | 2007-10-08 | 2009-04-27 | Владимир Сергеевич Мартыненко | Integrated power system and operating procedure for integrated power system |
| RU2354023C1 (en) | 2007-10-08 | 2009-04-27 | Владимир Сергеевич Мартыненко | Integrated power system |
| RU2010103504A (en) | 2010-02-02 | 2010-06-27 | Юрий Васильевич Потапов (RU) | ELECTRIC AC NETWORK |
| UA52793U (en) | 2010-03-04 | 2010-09-10 | Божок Аркадий Михайлович | Measuring device for diesel power |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2703983C1 (en) * | 2018-07-11 | 2019-10-23 | Анатолий Михайлович Криштоп | Electric hydraulic accumulating transformer (ehat) and method of functioning of ehat (versions) |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012168809A3 (en) | 2013-03-07 |
| LT5851B (en) | 2012-07-25 |
| RU2011154461A (en) | 2013-07-10 |
| LT2011108A (en) | 2012-05-25 |
| WO2012168809A4 (en) | 2013-06-06 |
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