CN205176917U - Take into account microgrid energy storage power station system of economic nature aassessment - Google Patents

Take into account microgrid energy storage power station system of economic nature aassessment Download PDF

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Publication number
CN205176917U
CN205176917U CN201520816385.9U CN201520816385U CN205176917U CN 205176917 U CN205176917 U CN 205176917U CN 201520816385 U CN201520816385 U CN 201520816385U CN 205176917 U CN205176917 U CN 205176917U
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China
Prior art keywords
energy storage
switch
bus
storage system
current transformer
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CN201520816385.9U
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Chinese (zh)
Inventor
李德鑫
吕项羽
常学飞
袁野
韩晓娟
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North China Electric Power University
Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd
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North China Electric Power University
Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/14—District level solutions, i.e. local energy networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

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  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model provides a take into account microgrid energy storage power station system of economic nature aassessment which characterized in that: wind turbine generator system is connected to the DCDC converter through first switch (1), photovoltaic array passes through second switch (2) and is connected to the DCDC converter, mixed energy storage system passes through third switch (3) and is connected to two -way DCDC converter, the battery passes through fourth switch (4) respectively with ultracapacitor system in mixing energy storage system, the 5th switch (5) are connected with third switch (3), the DCDC converter is connected with two -way DCDC converter and 48V dc bus, the DC load closes (6) through the sixmo and is connected to the 48V dc bus, the 48V dc bus closes (7) through the minion and is connected to 220V ac bus, the alternating load closes (8) through the octavo and is connected to 220V ac bus, each node is connected with little management system of electric wire netting central authorities. Its reliability and security that improves the microgrid mixes the discharge frequency that fills that energy storage system can effectively reduce the battery, prolongs energy storage system's life, reduces economic cost, improves the economic nature of microgrid.

Description

A kind of microgrid energy-accumulating power station system taking into account economic evaluation
Technical field
The utility model relates to a kind of microgrid energy-accumulating power station system taking into account economic evaluation.
Background technology
Microgrid is made up of multiple distributed generation unit, energy storage and load.Wherein, the output power of wind-powered electricity generation and photovoltaic generation distributed generator unit has feature that is intermittent and randomness, and the change of load also has randomness, and this brings larger challenge to the stable operation of microgrid.Energy storage can maintain power-balance and the energy equilibrium of microgrid inside by discharge and recharge, be the key that microgrid improves the quality of power supply, safe and reliable operation.But because energy storage device cost is higher, operation life is shorter, and large-scale application is restricted, therefore on the basis meeting system cloud gray model demand, rational program and design is carried out to accumulator system and have important practical significance.
Accumulator is as traditional energy-storage travelling wave tube, and energy density is large, the deficiencies such as memory capacity is high, but it is low to there is power density, and cycle life is short, low-temperature characteristics is poor, expensive; Ultracapacitor is as a kind of novel energy storage component, although energy density is less, power density is large, and memory capacity is low, and the response time is shorter, can frequently discharge and recharge and do not damage its performance.Hybrid energy-storing can make full use of the complementary characteristic of accumulator and ultracapacitor, reduces the discharge and recharge frequency of accumulator, increases the service life, and reduces financial cost.
Summary of the invention
The purpose of this utility model is to provide a kind of microgrid energy-accumulating power station system taking into account economic evaluation, is reasonable in design, economic microgrid energy-accumulating power station, overcomes the deficiency of single type accumulator system; Wind/light/storage system can be made to follow the trail of microgrid load power by mixed energy storage system, ensure the balance of power and electric energy in microgrid, improve the reliability and security of microgrid.
The technical solution of the utility model is achieved in that a kind of microgrid energy-accumulating power station system taking into account economic evaluation, it is characterized in that: by micro-capacitance sensor center management system, Wind turbines, photovoltaic array, mixed energy storage system, energy storage controller, DC/DC current transformer, two-way DC/DC current transformer, 48V DC bus, DC load, DC/AC current transformer, 220V ac bus, AC load and switch, wherein, mixed energy storage system is made up of accumulator and ultracapacitor, Wind turbines is connected to DC/DC current transformer by the first switch, photovoltaic array is connected to DC/DC current transformer by second switch, mixed energy storage system is connected to two-way DC/DC current transformer by the 3rd switch, in mixed energy storage system, accumulator and ultracapacitor are respectively by the 4th switch, 5th switch is connected with the 3rd switch, DC/DC current transformer is connected with 48V DC bus with two-way DC/DC current transformer, DC load is connected to 48V DC bus by the 6th switch, 48V DC bus is connected to 220V ac bus by the 7th switch, AC load is connected to 220V ac bus by the 8th switch, each node is connected with micro-capacitance sensor center management system.
Described Wind turbines, photovoltaic array, mixed energy storage system are powered jointly, and electric energy is first transported to 48V DC bus by current transformer by wind/light/storage system, then is transported to 220V ac bus by current transformer.
Wind/light/storage system tracking microgrid load power mode is as follows: micro-capacitance sensor center management system passes through the difference of the regenerative resource such as Wind turbines, photovoltaic array output power and microgrid load power, controls mixed energy storage system output power.When microgrid load power is greater than regenerative resource output power, mixed energy storage system discharges; When microgrid load power is less than regenerative resource output power, mixed energy storage system charges.
Good effect of the present utility model is that mixed energy storage system is made up of accumulator and ultracapacitor, effectively can reduce the discharge and recharge frequency of accumulator, extends the serviceable life of accumulator system, reduces financial cost, improves the economy of microgrid; Micro-capacitance sensor center management system is by energy storage controller, and mixed energy storage system output power is decomposed into low frequency component and high fdrequency component, and battery absorbs the low frequency component had compared with macro-energy, to stabilize the tendency fluctuation in mixed energy storage system; Ultracapacitor absorbs the high fdrequency component comprising more frequent back and forth change power, to stabilize the fast sex change fluctuation in mixed energy storage system.
Accompanying drawing explanation
Fig. 1 topological structure of the present utility model.
The structural drawing of Fig. 2 the utility model microgrid power-balance.
Fig. 3 mixed energy storage system structural drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described: as shown in Figure 1, a kind of microgrid energy-accumulating power station system taking into account economic evaluation, it is characterized in that: by micro-capacitance sensor center management system, Wind turbines, photovoltaic array, mixed energy storage system, energy storage controller, DC/DC current transformer, two-way DC/DC current transformer, 48V DC bus, DC load, DC/AC current transformer, 220V ac bus, AC load and switch, wherein, mixed energy storage system is made up of accumulator and ultracapacitor.Wind turbines is connected to DC/DC current transformer by the first switch 1, photovoltaic array is connected to DC/DC current transformer by second switch 2, mixed energy storage system is connected to two-way DC/DC current transformer by the 3rd switch 3, in mixed energy storage system, accumulator and ultracapacitor are respectively by the 4th switch 4, 5th switch 5 is connected with the 3rd switch 3, DC/DC current transformer is connected with 48V DC bus with two-way DC/DC current transformer, DC load is connected to 48V DC bus by the 6th switch 6, 48V DC bus is connected to 220V ac bus by the 7th switch 7, AC load is connected to 220V ac bus by the 8th switch 8, each node is connected with micro-capacitance sensor center management system.This micro-grid system is powered jointly by Wind turbines, photovoltaic array, mixed energy storage system, and electric energy is first transported to 48V DC bus by current transformer by wind/light/storage system, then is transported to 220V ac bus by current transformer.
As shown in Figure 2, mixed energy storage system can make wind/light/storage system follow the trail of microgrid load power, ensures the balance of power and electric energy in microgrid, improves the reliability and security of microgrid.
Wind/light/storage system tracking microgrid load power mode is as follows: micro-capacitance sensor center management system passes through the difference of the regenerative resource such as Wind turbines, photovoltaic array output power and microgrid load power, controls mixed energy storage system output power.When microgrid load power is greater than regenerative resource output power, mixed energy storage system discharges; When microgrid load power is less than regenerative resource output power, mixed energy storage system charges.
As shown in Figure 3, mixed energy storage system is made up of accumulator and ultracapacitor, effectively can reduce the discharge and recharge frequency of accumulator, extends the serviceable life of accumulator system, reduces financial cost, improves the economy of microgrid.
Micro-capacitance sensor center management system is by energy storage controller, and mixed energy storage system output power is decomposed into low frequency component and high fdrequency component, and battery absorbs the low frequency component had compared with macro-energy, to stabilize the tendency fluctuation in mixed energy storage system; Ultracapacitor absorbs the high fdrequency component comprising more frequent back and forth change power, to stabilize the fast sex change fluctuation in mixed energy storage system.

Claims (2)

1. take into account the microgrid energy-accumulating power station system of economic evaluation for one kind, be made up of micro-capacitance sensor center management system, Wind turbines, photovoltaic array, mixed energy storage system, energy storage controller, DC/DC current transformer, two-way DC/DC current transformer, 48V DC bus, DC load, DC/AC current transformer, 220V ac bus, AC load and switch, it is characterized in that: mixed energy storage system is made up of accumulator and ultracapacitor, Wind turbines is connected to DC/DC current transformer by the first switch (1), photovoltaic array is connected to DC/DC current transformer by second switch (2), mixed energy storage system is connected to two-way DC/DC current transformer by the 3rd switch (3), in mixed energy storage system, accumulator and ultracapacitor are respectively by the 4th switch (4), 5th switch (5) is connected with the 3rd switch (3), DC/DC current transformer is connected with 48V DC bus with two-way DC/DC current transformer, DC load is connected to 48V DC bus by the 6th switch (6), 48V DC bus is connected to 220V ac bus by the 7th switch (7), AC load is connected to 220V ac bus by the 8th switch (8), each node is connected with micro-capacitance sensor center management system.
2. the microgrid energy-accumulating power station system taking into account economic evaluation according to claim 1, it is characterized in that described Wind turbines, photovoltaic array, mixed energy storage system jointly for micro-grid system is powered, electric energy is first transported to 48V DC bus by current transformer by Wind turbines, photovoltaic array, mixed energy storage system, then is transported to 220V ac bus by current transformer.
CN201520816385.9U 2015-10-22 2015-10-22 Take into account microgrid energy storage power station system of economic nature aassessment Active CN205176917U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896620A (en) * 2016-06-16 2016-08-24 安徽美能储能***有限公司 Microgrid controller for zinc bromine flow battery
CN107248700A (en) * 2017-08-14 2017-10-13 青岛特来电新能源有限公司 Box-type substation and micro-grid system
CN111404181A (en) * 2020-03-19 2020-07-10 国电联合动力技术有限公司 Multi-energy coupling complementary energy storage system and energy storage control method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896620A (en) * 2016-06-16 2016-08-24 安徽美能储能***有限公司 Microgrid controller for zinc bromine flow battery
CN107248700A (en) * 2017-08-14 2017-10-13 青岛特来电新能源有限公司 Box-type substation and micro-grid system
CN107248700B (en) * 2017-08-14 2023-09-19 青岛特来电新能源科技有限公司 Box-type substation and micro-grid system
CN111404181A (en) * 2020-03-19 2020-07-10 国电联合动力技术有限公司 Multi-energy coupling complementary energy storage system and energy storage control method
CN111404181B (en) * 2020-03-19 2021-11-23 国电联合动力技术有限公司 Multi-energy coupling complementary energy storage system and energy storage control method

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