CN103944249A - Multifunctional energy storage inverter system - Google Patents

Multifunctional energy storage inverter system Download PDF

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Publication number
CN103944249A
CN103944249A CN201310021198.7A CN201310021198A CN103944249A CN 103944249 A CN103944249 A CN 103944249A CN 201310021198 A CN201310021198 A CN 201310021198A CN 103944249 A CN103944249 A CN 103944249A
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power
batteries
charging
electric
sensing circuit
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CN103944249B (en
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周锡卫
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Funenbao Energy Technology Group Co ltd
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Abstract

The invention belongs to the technical field of power energy storage inversion, and particularly relates to a multifunctional energy storage inversion system. The method comprises the following steps: the system comprises a photovoltaic and new energy power input end, a bidirectional inverter circuit, a protection and switch circuit, a power supply output power line, a charging and discharging module, a monitoring module, a B1 monitoring sensing circuit, a B2 monitoring sensing circuit, a control module, a system bus, a B1 electric control switch, a B2 electric control switch, a B1 storage battery pack and a B2 storage battery pack; the storage battery packs with 2 groups or more are arranged and monitored in real time through a monitoring module, so that the storage battery packs with corresponding charging and discharging states are controlled, and the whole charging or discharging process is independently carried out in the corresponding states; the multifunctional energy storage inverter system effectively realizes power generation, power storage, power supply, grid connection and grid disconnection, prolongs the service life of a storage battery, improves the reliability and safety of the energy storage inverter system, and enhances the robustness and black start capability of the energy storage inverter system.

Description

A kind of multifunctional usage energy storage inversion system
Technical field
The invention belongs to electric power energy storage inversion transformation technique field, be specifically related to a kind of multifunctional usage energy storage inversion system.
Background technology
The extensive use of new forms of energy electric power and micro-electrical network, promote the development of energy storage inverter and system, and towards generating, electric power storage, power supply and grid-connected and from the shared multifunctional usage energy storage inversion system future development of net, many energy storage inverter products therefore on market, are there are.As: the product of the company of inverter enterprise " sunlight power supply " of world-renowned ABB AB and Chinese Famous, for grid-connected and networking and the generating power supply of New-energy power system provide support, make contribution.
But the being seen energy storage inverter in prior art and market and system product, mainly the UPS technical development for subsequent use based on energy storage, its energy storage section all adopts a group storage battery to be connected to two-way inverter circuit DC terminal formation, its shortcoming is: in the time having load to power, even accumulator positive is in charging, storage battery also can be transformed into the state discharging, and makes batteries not be subject in fact the control of charge-discharge control circuit, has a strong impact on working healthily and the service life of storage battery; And, in micro-electrical network, energy storage inversion system is mainly born the power grid environment important task that supports micro-electrical network, single group storage battery set constructor is after battery discharging, need to supplement certain electric weight and just can make inverter circuit task power supply again, this be because starting resistor higher than the minimum voltage that can discharge and arrange, to this, if new forms of energy power generation is not enough or do not generate electricity, will affect inverter circuit and again start and work, even make micro-electrical network paralysis; And the being seen energy storage inverter in prior art and market and system product, can't integrated effective realization generating, electric power storage, power supply and grid-connected and from the shared multifunctional usage energy storage inversion system of net, has affected the performance of system effectiveness.
Summary of the invention
For overcoming the above-mentioned defect of prior art and product, the present invention proposes " a kind of multifunctional usage energy storage inversion system ", its objective is the reliability and the fail safe that increase energy storage inversion system, strengthen robustness and the black start-up ability of energy storage inversion system, effectively realize generating, electric power storage, power supply and grid-connected and from the shared multifunctional usage energy storage inversion system of net and improve the overall efficiency of system.
Concrete technical scheme is, a kind of multifunctional usage energy storage inversion system, comprising: photovoltaic and new forms of energy power input end, two-way inverter circuit, protection and switching circuit, power supply output power line, charging and discharging module, monitoring modular, B1 monitoring sensing circuit, B2 monitoring sensing circuit, control module, system bus, B1 road electric-controlled switch, B2 road electric-controlled switch, B1 batteries, B2 batteries; It is characterized in that:
Photovoltaic and new forms of energy electric power access photovoltaic and new forms of energy power input end also connect power supply output power line through two-way inverter circuit, protection and switching circuit, form photovoltaic electric power Alternating Current Power Supply path;
Photovoltaic electric power access photovoltaic and new forms of energy power input end, connect charging and discharging module and connect B1 batteries through B1 monitoring sensing circuit JiB1 road electric-controlled switch by photovoltaic and new forms of energy power input end, and connect charging and discharging module and connect B2 batteries through B2 monitoring sensing circuit JiB2 road electric-controlled switch by photovoltaic and new forms of energy power input end, form photovoltaic electric power charging electric power storage path;
B1 batteries connects B1 road electric-controlled switch and B1 monitoring sensing circuit, and B2 batteries connects B2 road electric-controlled switch and B2 monitoring sensing circuit and connects two-way inverter circuit, protection and switching circuit, power supply output power line through charging and discharging module, formation battery discharging supply path;
Grid power accesses two-way inverter circuit by power output power line and protection and switching circuit, connect charging and discharging module and connect B1 batteries through B1 monitoring sensing circuit JiB1 road electric-controlled switch by two-way inverter circuit, and connect charging and discharging module and connect B2 batteries through B2 monitoring sensing circuit JiB2 road electric-controlled switch by two-way inverter circuit, form net electricity charging electric power storage path;
Control module connects monitoring modular and B1 monitoring sensing circuit and B2 monitoring sensing circuit, forms accumulator monitoring path;
Control module connects two-way inverter circuit, protection and switching circuit, charging and discharging module, B1 road electric-controlled switch, B2 road electric-controlled switch by system bus, forms and controls and communication link;
The major function feature of its formation is:
1. set batteries >=2 group, the charge capacity of each group storage battery >=average power consumption every day;
Generating amount of power supply >=power load of new forms of energy electric power PV every day average electricity consumption UP power consumption;
Power load is supplied with in 3.PV generating, and storage battery and electrical network, meet PV and preferentially power, and storage battery is controlled to be charged and discharged, for subsequent use and controlled power supply of electrical network;
4.PV is not enough and while not generating electricity, electrical network G powers to power load and storage battery;
Its control method is:
System controller is monitored by detection module and is judged, when:
PV is without electricity:
B1 and B2 > Vbo, when B1, B2 are all greater than battery discharging setting voltage value,
B1 or B2 → UP, storage battery is power load power supply, i.e. B1o or B2o conducting;
And monitor accumulator electric-quantity, prevent overdischarge;
When B1 or B2 only have a group storage battery to be greater than electric discharge setting voltage value Vbo,
G → UP, is converted to electrical network bypass power supply;
When B1 and B2 are all less than or equal to charge in batteries setting voltage value Vbi, Bi1 or Bi2 conducting
G → B1 or B2, monitoring accumulator electric-quantity, prevents from overcharging;
Bi is charging accumulator group, and Bo is electric discharge batteries, and B1 is batteries, B2 batteries, G is electrical network, UP is power load, → for power supply relation, Bo1 be B1 batteries in discharge condition, Bi1 be B1 batteries in charged state, the rest may be inferred;
Bo conducting, the batteries B in discharge condition connects electric discharge bus conducting;
Bi conducting, the batteries B in charged state connects charging bus conducting;
Battery discharging setting voltage value Vbo and charge in batteries setting voltage value Vbi set according to accumulator product specification requirement;
Bo normality is conducting, Bi is for disconnecting, control module is by the state of monitoring modular and B1 monitoring sensing circuit and B2 monitoring sensing circuit Real-Time Monitoring B1 batteries and B2 batteries, and to determine that it is current be charged state or discharge condition, when the electric discharge of charging and discharging module is during for load supplying, keeping normality Bo is conducting, Bi is for disconnecting, as PV > UP, when charging and discharging module has charging power, disconnect Bo, conducting Bi.
Utilization of the present invention arranges 2 groups and above batteries and by the current residing charge or discharge state of monitoring modular Real-Time Monitoring storage battery, and according to the charging and discharging demand of charging and discharging module, control the batteries conducting access charging and discharging module of corresponding state, realize the batteries overall process controlled and that independently fill or discharge of phase inductive charging and discharge condition under corresponding state; Can also utilize the electric weight difference of controlling different conditions between batteries, ensure that inverter circuit is all the time in starting electric weight and range of voltage values, greatly improve the life-span of storage battery, increase reliability and the fail safe of energy storage inversion system, strengthened robustness and the black start-up ability of energy storage inversion system; And can make system integration, effectively realize generating, electric power storage, power supply and grid-connected and from the shared multifunctional usage energy storage inversion system of net, greatly improve system effectiveness.
Brief description of the drawings
Fig. 1 is the energy storage inversion system principle of work and power schematic diagram of prior art;
Fig. 2 is a kind of multifunctional usage energy storage inversion system principle of work and power schematic diagram.
Embodiment
As examples of implementation, by reference to the accompanying drawings a kind of multifunctional usage energy storage inversion system is described, still, technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Accompanying drawing 1 has provided the energy storage inversion system principle of work and power schematic diagram of prior art, shown in figure, the energy storage inversion system of prior art adopts a group storage battery to be connected to two-way inverter circuit DC terminal formation, its shortcoming is: in the time having load to power, even accumulator positive is in charging, storage battery also can be transformed into the state discharging, and makes batteries not be subject in fact the control of charge-discharge control circuit, has a strong impact on working healthily and the service life of storage battery.
Fig. 2 has provided a kind of multifunctional usage energy storage inversion system principle of work and power schematic diagram, shown in figure, a kind of multifunctional usage energy storage inversion system that the present invention proposes, comprise: photovoltaic and new forms of energy power input end (1), two-way inverter circuit (2), protection and switching circuit (3), power supply output power line (4), charging and discharging module (5), monitoring modular (6), B1 monitoring sensing circuit (6a), B2 monitoring sensing circuit (6b), control module (7), system bus (8), B1 road electric-controlled switch (9a), B2 road electric-controlled switch (9b), B1 batteries (10a), B2 batteries (10b), it is characterized in that:
Photovoltaic and new forms of energy electric power access photovoltaic and new forms of energy power input end (1) also connect power supply output power line (4) through two-way inverter circuit (2), protection and switching circuit (3), form photovoltaic electric power Alternating Current Power Supply path;
Photovoltaic electric power access photovoltaic and new forms of energy power input end (1), connect charging and discharging module (5) and connect B1 batteries (10a) through B1 monitoring sensing circuit (6a) JiB1 road electric-controlled switch (9a) by photovoltaic and new forms of energy power input end (1), and connect charging and discharging module (5) and connect B2 batteries (10b) through B2 monitoring sensing circuit (6b) JiB2 road electric-controlled switch (9b) by photovoltaic and new forms of energy power input end (1), form photovoltaic electric power charging electric power storage path;
B1 batteries (10a) connects B1 road electric-controlled switch (9a) and B1 monitoring sensing circuit (6a), and B2 batteries (10b) connects B2 road electric-controlled switch (9b) and B2 monitoring sensing circuit (6b) and connects two-way inverter circuit (2), protection and switching circuit (3), power supply output power line (4) through charging and discharging module (5), formation battery discharging supply path;
Grid power accesses two-way inverter circuit (2) by power output power line (4) and protection and switching circuit (3), connect charging and discharging module (5) and connect B1 batteries (10a) through B1 monitoring sensing circuit (6a) JiB1 road electric-controlled switch (9a) by two-way inverter circuit (2), and connect charging and discharging module (5) and connect B2 batteries (10b) through B2 monitoring sensing circuit (6b) JiB2 road electric-controlled switch (9b) by two-way inverter circuit (2), form net electricity charging electric power storage path;
Control module (7) connects monitoring modular (6) and B1 monitoring sensing circuit (6a) and B2 monitoring sensing circuit (6b), forms accumulator monitoring path;
Control module (7) connects two-way inverter circuit (2), protection and switching circuit (3), charging and discharging module (5), B1 road electric-controlled switch (9a), B2 road electric-controlled switch (9b) by system bus (8), forms and controls and communication link;
The major function feature of its formation is:
1. set batteries >=2 group, the charge capacity of each group storage battery >=average power consumption every day;
Generating amount of power supply >=power load of new forms of energy electric power PV every day average electricity consumption UP power consumption;
Power load is supplied with in 3.PV generating, and storage battery and electrical network, meet PV and preferentially power, and storage battery is controlled to be charged and discharged, for subsequent use and controlled power supply of electrical network;
4.PV is not enough and while not generating electricity, electrical network G powers to power load and storage battery;
Its control method is:
System controller is monitored by detection module and is judged, when:
PV is without electricity:
B1 and B2 > Vbo, when B1, B2 are all greater than battery discharging setting voltage value,
B1 or B2 → UP, storage battery is power load power supply, i.e. B1o or B2o conducting;
And monitor accumulator electric-quantity, prevent overdischarge;
When B1 or B2 only have a group storage battery to be greater than electric discharge setting voltage value Vbo,
G → UP, is converted to electrical network bypass power supply;
When B1 and B2 are all less than or equal to charge in batteries setting voltage value Vbi, Bi1 or Bi2 conducting
G → B1 or B2, monitoring accumulator electric-quantity, prevents from overcharging;
Bi is charging accumulator group, Bo is electric discharge batteries, B1 is batteries (10a), B2 batteries (10b), G is electrical network, UP is power load, → be power supply relation, Bo1 be B1 batteries (10a) in discharge condition, Bi1 be B1 batteries (10a) in charged state, the rest may be inferred;
Bo conducting, the batteries B in discharge condition connects electric discharge bus conducting;
Bi conducting, the batteries B in charged state connects charging bus conducting;
Battery discharging setting voltage value Vbo and charge in batteries setting voltage value Vbi set according to accumulator product specification requirement;
Bo normality is conducting, Bi is for disconnecting, control module (7) is by the state of monitoring modular (6) and B1 monitoring sensing circuit (6a) and B2 monitoring sensing circuit (6b) Real-Time Monitoring B1 batteries (10a) and B2 batteries (10b), and determine that it is current for charged state or discharge condition, in the time that charging and discharging module (5) electric discharge is load supplying, keeping normality Bo is conducting, Bi is for disconnecting, as PV > UP, when charging and discharging module (5) has charging power, disconnect Bo, conducting Bi.
By the enforcement of the technical program, effectively realize generating, electric power storage, power supply and grid-connected and from the shared multifunctional usage energy storage inversion system of net, not only improve the life-span of storage battery, also increase reliability and the fail safe of energy storage inversion system, strengthened robustness and the black start-up ability of energy storage inversion system.

Claims (1)

1. a multifunctional usage energy storage inversion system, comprising: photovoltaic and new forms of energy power input end (1), two-way inverter circuit (2), protection and switching circuit (3), power supply output power line (4), charging and discharging module (5), monitoring modular (6), B1 monitoring sensing circuit (6a), B2 monitoring sensing circuit (6b), control module (7), system bus (8), B1 road electric-controlled switch (9a), B2 road electric-controlled switch (9b), B1 batteries (10a), B2 batteries (10b); It is characterized in that:
Photovoltaic and new forms of energy electric power access photovoltaic and new forms of energy power input end (1) also connect power supply output power line (4) through two-way inverter circuit (2), protection and switching circuit (3), form photovoltaic electric power Alternating Current Power Supply path;
Photovoltaic electric power access photovoltaic and new forms of energy power input end (1), connect charging and discharging module (5) and connect B1 batteries (10a) through B1 monitoring sensing circuit (6a) JiB1 road electric-controlled switch (9a) by photovoltaic and new forms of energy power input end (1), and connect charging and discharging module (5) and connect B2 batteries (10b) through B2 monitoring sensing circuit (6b) JiB2 road electric-controlled switch (9b) by photovoltaic and new forms of energy power input end (1), form photovoltaic electric power charging electric power storage path;
B1 batteries (10a) connects B1 road electric-controlled switch (9a) and B1 monitoring sensing circuit (6a), and B2 batteries (10b) connects B2 road electric-controlled switch (9b) and B2 monitoring sensing circuit (6b) and connects two-way inverter circuit (2), protection and switching circuit (3), power supply output power line (4) through charging and discharging module (5), formation battery discharging supply path;
Grid power accesses two-way inverter circuit (2) by power output power line (4) and protection and switching circuit (3), connect charging and discharging module (5) and connect B1 batteries (10a) through B1 monitoring sensing circuit (6a) JiB1 road electric-controlled switch (9a) by two-way inverter circuit (2), and connect charging and discharging module (5) and connect B2 batteries (10b) through B2 monitoring sensing circuit (6b) JiB2 road electric-controlled switch (9b) by two-way inverter circuit (2), form net electricity charging electric power storage path;
Control module (7) connects monitoring modular (6) and B1 monitoring sensing circuit (6a) and B2 monitoring sensing circuit (6b), forms accumulator monitoring path;
Control module (7) connects two-way inverter circuit (2), protection and switching circuit (3), charging and discharging module (5), B1 road electric-controlled switch (9a), B2 road electric-controlled switch (9b) by system bus (8), forms and controls and communication link;
The major function feature of its formation is:
1. set batteries >=2 group, the charge capacity of each group storage battery >=average power consumption every day;
Generating amount of power supply >=power load of new forms of energy electric power PV every day average electricity consumption UP power consumption;
Power load is supplied with in 3.PV generating, and storage battery and electrical network, meet PV and preferentially power, and storage battery is controlled to be charged and discharged, for subsequent use and controlled power supply of electrical network;
4.PV is not enough and while not generating electricity, electrical network G powers to power load and storage battery;
Its control method is:
System controller is monitored by detection module and is judged, when:
PV is without electricity:
B1 and B2 > Vbo, when B1, B2 are all greater than battery discharging setting voltage value,
B1 or B2 → UP, storage battery is power load power supply, i.e. B1o or B2o conducting;
And monitor accumulator electric-quantity, prevent overdischarge.
When B1 or B2 only have a group storage battery to be greater than electric discharge setting voltage value Vbo,
G → UP, is converted to electrical network bypass power supply.
When B1 and B2 are all less than or equal to charge in batteries setting voltage value Vbi, Bi1 or Bi2 conducting
G → B1 or B2, monitoring accumulator electric-quantity, prevents from overcharging.
Bi is charging accumulator group, Bo is electric discharge batteries, B1 is batteries (10a), B2 batteries (10b), G is electrical network, UP is power load, → be power supply relation, Bo1 be B1 batteries (10a) in discharge condition, Bi1 be B1 batteries (10a) in charged state, the rest may be inferred.
Bo conducting, the batteries B in discharge condition connects electric discharge bus conducting;
Bi conducting, the batteries B in charged state connects charging bus conducting;
Battery discharging setting voltage value Vbo and charge in batteries setting voltage value Vbi set according to accumulator product specification requirement.
Bo normality is conducting, Bi is for disconnecting, control module (7) is by the state of monitoring modular (6) and B1 monitoring sensing circuit (6a) and B2 monitoring sensing circuit (6b) Real-Time Monitoring B1 batteries (10a) and B2 batteries (10b), and determine that it is current for charged state or discharge condition, in the time that charging and discharging module (5) electric discharge is load supplying, keeping normality Bo is conducting, Bi is for disconnecting, as PV > UP, when charging and discharging module (5) has charging power, disconnect Bo, conducting Bi.
CN201310021198.7A 2013-01-22 2013-01-22 Multifunctional energy storage inverter system Active CN103944249B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104201769A (en) * 2014-08-06 2014-12-10 国家电网公司 Transformer substation direct-current system having discharging bypass function
CN106169622A (en) * 2016-07-21 2016-11-30 上海致远绿色能源股份有限公司 It is applicable to management method for storage battery group and the device of wind-solar-diesel complementary electricity generation system
CN109256793A (en) * 2017-07-14 2019-01-22 周锡卫 A kind of multifunction energy storage movable type shipping shore power system and control method

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CN101931238A (en) * 2010-04-29 2010-12-29 浙江省电力试验研究院 Master-slave strategy-based microgrid system coordination control method
US20110133556A1 (en) * 2009-12-04 2011-06-09 Samsung Sdi Co., Ltd. Energy storage system
CN102215012A (en) * 2011-06-07 2011-10-12 天宝电子(惠州)有限公司 Bidirectional transformation system of solar energy and electric energy
CN202134924U (en) * 2011-08-11 2012-02-01 周锡卫 Structure of multifunctional system of solar power and self use connected grid
CN102751745A (en) * 2011-04-18 2012-10-24 周锡卫 System and method for power supply of solar power generation

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CN102751745A (en) * 2011-04-18 2012-10-24 周锡卫 System and method for power supply of solar power generation
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104201769A (en) * 2014-08-06 2014-12-10 国家电网公司 Transformer substation direct-current system having discharging bypass function
CN106169622A (en) * 2016-07-21 2016-11-30 上海致远绿色能源股份有限公司 It is applicable to management method for storage battery group and the device of wind-solar-diesel complementary electricity generation system
CN109256793A (en) * 2017-07-14 2019-01-22 周锡卫 A kind of multifunction energy storage movable type shipping shore power system and control method
CN109256793B (en) * 2017-07-14 2024-04-09 周锡卫 Control method of multifunctional energy storage mobile ship shore power system

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Effective date of registration: 20170112

Address after: 300405 Tianjin City, Beichen economic and Technological Development Zone Tianjin high-end equipment manufacturing Industrial Park 10000 River Road and Yongxing Road intersection 150 meters south

Patentee after: The rich treasure of new energy technology (Tianjin) Co., Ltd.

Address before: 100102 Chaoyang District, South Lake Road, No. 8, North building, room 2, room, No. 301

Patentee before: Zhou Xiwei

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Address after: 211135 300 Chi Hui Road, Qilin science and Technology Innovation Park, Jiangning District, Nanjing, Jiangsu

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Address after: 211135 300 Chi Hui Road, Qilin science and Technology Innovation Park, Nanjing, Jiangsu

Patentee after: Funenbao Energy Technology Group Co.,Ltd.

Address before: 211135 300 Chi Hui Road, Qilin science and Technology Innovation Park, Jiangning District, Nanjing, Jiangsu

Patentee before: Funengbao Energy Technology Co.,Ltd.