CN104158216A - Solar energy and wind energy integrated power generation system - Google Patents

Solar energy and wind energy integrated power generation system Download PDF

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Publication number
CN104158216A
CN104158216A CN201410410442.3A CN201410410442A CN104158216A CN 104158216 A CN104158216 A CN 104158216A CN 201410410442 A CN201410410442 A CN 201410410442A CN 104158216 A CN104158216 A CN 104158216A
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energy
module
storage module
battery
wind
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CN201410410442.3A
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CN104158216B (en
Inventor
任德新
李志敏
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SICHUAN KBHG ENERGY TECHNOLOGY Co Ltd
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SICHUAN KBHG ENERGY TECHNOLOGY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The invention relates to a solar energy and wind energy integrated power generation system which has the following advantages: (1) wind energy and solar energy are converted into electrical energy to be stored in an energy storage module together, according to the demand of a power grid, the energy storage module supplies power to the power grid via an inverter module, and the direct impact to the power grid by the instability of the wind energy and solar energy is avoided, (2) through the coordinated use of the inverter module and an automatic generation control (AGC) coordination module, the power generation efficiency can be improved, and (3) through the use of a battery module monitoring device and an equalizer, the service life and use efficiency of a cell are improved, and the economic benefit of power generation system is increased.

Description

A kind of solar energy and energy and wind energy integrative electricity generation system
Affiliated technical field
The present invention relates to a kind of solar energy and energy and wind energy integrative electricity generation system.
Background technology
Along with countries in the world are to the going from bad to worse and the requirement of human kind sustainable development of sharply the expanding of energy demand, biological environment, countries in the world all utilize reproducible new forms of energy at active development.
Current, wind power generation is the forms of electricity generation of the most ripe, the tool exploitation scale of technology and tool commercialized development prospect during regenerative resource develops.Due to its outstanding role at aspects such as alleviating environmental pollution, readjust the energy structure, promote sustainable development, wind power generation is important green energy resource in this century, is one of important alternative energy source of the conventional energy resource generatings such as coal.And that solar energy resources enriches, distributes is wide, pollution-free, renewable, make solar energy power generating become the main flow in new energy development.
Wind power generation and photovoltaic generation, because of feature separately, are realized complementary.Wind power generation is good night, and photovoltaic generation is good daytime, and wind light mutual complementing power generation can be realized the round-the-clock generating of new forms of energy.By setting up honourable energy-accumulating power station, improve wind-powered electricity generation dissolve ability and photovoltaic intermittent problems, and play the effect to electrical network peak load shifting.
Along with the continuous expansion of wind-powered electricity generation and photovoltaic generation scale, grid-connected after, will certainly bring bad impact to electrical network.The flip-flop of wind speed and illumination can cause the fluctuation of voltage and the change of flickering or frequency, thereby has affected the quality of power supply; The uncertainty that scene is exerted oneself has caused the uncertainty of trend, trend change may cause that Branch Power Flow is out-of-limit, node voltage out-of-limit etc., thereby affect power supply reliability.The spinning reserve that meanwhile, also will increase respective volume guarantees peak regulation, the fm capacity of system.
Summary of the invention
For addressing the above problem, the invention provides a kind of solar energy and energy and wind energy integrative electricity generation system, this system is by introducing energy-storage module, by wind energy and solar energy dump in energy-storage system, according to the demand of electrical network, be mains supply continuously or off and on, this system can also be according to power network fluctuation situation simultaneously, according to current wind-force and sunshine situation, generate electricity adaptively, when being incorporated into the power networks, reduce the impact to electrical network.
To achieve these goals, the invention provides a kind of solar energy and energy and wind energy integrative electricity generation system, this system comprises:
Wind-driven generator, for converting wind energy to electric energy, wherein this wind-driven generator adopts double feedback electric engine;
Blower voltage, electric current, rotating speed sampling module, the voltage while moving for detection of motor, electric current and rotating speed;
Solar panel, for being converted to electric energy by solar energy;
Energy-storage module, the electric energy obtaining for storing above-mentioned wind-driven generator and solar panel, the electric energy that wherein said wind-driven generator obtains is stored to this energy-storage module by rectifying device, the electric energy that described solar panel obtains is stored to this energy-storage module by DC/DC converter, and this energy-storage module comprises a plurality of battery modules;
Inversion module, for converting the electric energy of energy-storage module to alternating current, is connected with electrical network bus with main circuit breaker through step-up transformer;
Main control module, for controlling this operation of electric power system, coordinates the work of all parts and module.
Preferably, described electricity generation system also comprises battery module monitoring device, and this monitoring device comprises as lower unit:
For measuring the temperature measurement unit of a plurality of battery module temperature of energy-storage module;
For measuring the voltage measurement unit of a plurality of battery module voltages of energy-storage module;
For according to relevant voltage and the temperature measured, obtain the total voltage of a plurality of battery modules and the computing unit of total current in energy-storage module;
For measuring the charging and discharging state and the measuring unit that discharges and recharges that discharges and recharges the time of a plurality of battery modules of energy-storage module;
For storing total voltage, total current, the voltage of a plurality of battery modules and the memory cell of temperature of a plurality of battery modules of energy-storage module;
Be used for according to the charging and discharging state of the total voltage obtaining, total current, a plurality of battery modules, discharge and recharge time and temperature, obtain energy-storage module monitoring parameter, the monitoring unit of simultaneously according to the parameter obtaining, the battery module in energy-storage battery bag being monitored.
Preferably, described energy-storage module monitoring parameter comprises the remaining capacity estimation value of energy-storage module, real-time maximal input value, real-time peak power output value, real-time maximum wind value of dissolving, current stored energy and charge-discharge magnification.
Preferably, described electricity generation system also comprises equalizer, described equalizer is connected in parallel on the two ends of described a plurality of battery modules, described monitoring unit is according to different charging battery module requirements, through described equalizer, export given charging current to battery module, the electric current of monitoring unit to single battery module, the state information such as voltage and temperature is carried out Real-Time Monitoring, monitoring result and predefined status signal are carried out to difference comparison, output respective drive signal, control the break-make of equalizer, by balance optimizing control strategy, improve performance and the cycle life of battery pack.
Preferably, this electricity generation system also comprises that automatic generation amount controls (AGC) Coordination module, and for predicting and controlling the generated output of electricity generation system when grid-connected, this module comprises:
Electric network data acquiring unit, can read electrical network metric data in real time from grid dispatching center;
Electric network data analytic unit, can carry out data processing and quality judgement, the residing control interval of judgement electrical network to described electrical network metric data;
Generated output coordination unit, by real-time generation schedule, obtain basic point, and calculate electrical network regulatory demand, and carry out regulating power distribution according to coordination control strategy, this generated output coordination unit is connected with described main control module, and to the driver module of inversion module, send instruction by main control module, with power ratio control, export.
Electricity generation system tool provided by the invention has the following advantages: (1) is converted into electric energy by wind energy and solar energy and is stored in the lump in energy-storage module, according to electrical network demand, by energy-storage module via inversion module to mains supply, the unsteadiness of avoiding wind energy and solar energy to electrical network to directly impacting.(2) inversion module and automatic generation amount are controlled being used in conjunction with of (AGC) Coordination module, can improve generating efficiency.(3) use of battery module monitoring device and equalizer, has improved useful life and the service efficiency of battery, has increased the economic benefit of electricity generation system.
Accompanying drawing explanation
Fig. 1 shows the block diagram of a kind of solar energy of the present invention and energy and wind energy integrative electricity generation system;
Fig. 2 show system in Fig. 1 battery module monitoring device concrete composition with and with the connection layout of energy-storage module, equalizer;
Fig. 3 shows the concrete composition of automatic generation amount control (AGC) Coordination module of system in Fig. 1.
Embodiment
Fig. 1 shows according to the block diagram of solar energy of the present invention and energy and wind energy integrative electricity generation system, and this electricity generation system comprises: wind-driven generator 11, and for converting wind energy to electric energy, wherein this wind-driven generator adopts double feedback electric engine; Blower voltage, electric current, rotating speed sampling module 13, the voltage while moving for detection of motor, electric current and rotating speed; Solar panel 12, for being converted to electric energy by solar energy; Energy-storage module 7, the electric energy obtaining for storing above-mentioned wind-driven generator 11 and solar panel 12, the electric energy that wherein said wind-driven generator 11 obtains is stored to this energy-storage module by rectifying device 9, the electric energy that described solar panel obtains is stored to this energy-storage module by DC/DC converter 10, and this energy-storage module 7 comprises a plurality of battery modules; Inversion module 4, for converting the electric energy of energy-storage module 7 to alternating current, is connected with electrical network bus with main circuit breaker 2 through step-up transformer (not shown); Main control module 5, for controlling this operation of electric power system, coordinates the work of all parts and module; Described electricity generation system also comprises that battery module monitoring device 6, equalizer 8 and electricity generation system also comprise automatic generation amount control (AGC) Coordination module 3.
The operational mode of this comprehensive generating system is as follows: (1) energy storage pattern: when battery module monitoring device 6 detects the total voltage of energy-storage module 7 and temperature and do not arrive upper limit early warning value, wind-driven generator 11 and solar panel 12 normal power generation, gained electric energy is after rectifying device 9 and the processing of DC/DC converter, by equalizer, controlled to energy-storage module 7 chargings, when battery module monitoring device 6 detects the total voltage of energy-storage module 7 or temperature and reaches upper limit early warning value, stop charging; (2) pattern that is incorporated into the power networks: learn after the power generation needs of electrical network 1 via AGC module 7 at main control module 5, main control module 5 control inverters 4 are alternating current by the electric energy conversion in energy-storage module 7, after boosting, to electrical network 1 transmission of electricity, when the total voltage that energy-storage module 7 detected when battery module monitoring device 6 arrives lower limit early warning value or when the temperature of energy-storage module 7 reaches upper limit early warning value, main control module 5 notice inversion modules stop to grid power transmission.
Referring to this battery module monitoring device 6 of Fig. 2, comprise as lower unit:
For measuring the temperature measurement unit 62 of a plurality of battery module 1-n temperature of energy-storage module 7;
For measuring the voltage measurement unit 61 of a plurality of battery module 1-n voltages of energy-storage module 7;
For according to relevant voltage and the temperature measured, obtain the total voltage of a plurality of battery module 1-+n and the computing unit of total current 64 in energy-storage module 7;
For what measure the charging and discharging state of a plurality of battery module 1-n of energy-storage module 7 and discharge and recharge the time, discharge and recharge measuring unit 63;
For storing total voltage, total current, the voltage of a plurality of battery module 1-n and the memory cell of temperature of a plurality of battery module 1-n of energy-storage module 7;
Be used for according to the charging and discharging state of the total voltage obtaining, total current, a plurality of battery module 1-n, discharge and recharge time and temperature, obtain energy-storage module monitoring parameter, the monitoring unit 65 of simultaneously according to the parameter obtaining, the battery module in energy-storage battery bag being monitored.Described energy-storage module monitoring parameter comprises the remaining capacity estimation value of energy-storage module, real-time maximal input value, real-time peak power output value, real-time maximum wind value of dissolving, current stored energy and charge-discharge magnification.
Referring to Fig. 1 and Fig. 2, described equalizer 8 is connected in parallel on the two ends of described a plurality of battery modules, described monitoring unit 65 is according to the charging requirement of different battery module 1-n, through described equalizer 8, export given charging current to battery module 1-n, the state informations such as electric current, voltage and temperature of 65 couples of single battery module 1-n of monitoring unit are carried out Real-Time Monitoring, monitoring result and predefined status signal are carried out to difference comparison, output respective drive signal, control the break-make of equalizer, by balance optimizing control strategy, improve performance and the cycle life of battery pack.
The battery detection method of the energy-storage module of this electricity generation system, comprises the steps:
(1) measure the temperature of the battery module 1-n of energy-storage module;
(2) measure the voltage of the battery module 1-n of energy-storage module;
(3) measure energy-storage module battery module 1-n charging and discharging state and discharge and recharge the time;
(4), according to relevant voltage and the temperature measured, obtain total voltage and the total current of energy-storage module;
(5) voltage and the temperature of the total voltage of the energy-storage module that storage is measured, total current, battery module 1-n;
(6) according to the charging and discharging state of the total voltage obtaining, total current, each battery module, discharge and recharge time and temperature, obtain the monitoring parameter of energy-storage module, according to the parameter obtaining, the battery module 1-n in energy-storage module is monitored, described monitoring parameter comprises the remaining capacity estimation value of energy storage energy-storage module, real-time maximal input value, real-time peak power output value, real-time maximum wind value of dissolving, current stored energy and charge-discharge magnification simultaneously.
The described step of the battery module 1-n of energy-storage module being monitored according to the parameter obtaining comprises:
(61) total voltage of energy-storage module 7 reaches the lower limit of early warning voltage, will to main control module 5, send instruction by monitoring unit 66, controls energy-storage module 7 stop electric discharge by main control module 5;
(62) total voltage in energy-storage module 7 reaches the upper limit of early warning voltage, will to equalizer 8, send instruction by monitoring unit 66, by equalizer 8, controls the step that energy-storage module 7 stops charging;
(63) when the voltage of the single battery module of energy-storage module 7, reach the lower limit of early warning voltage, will to main control module 5, send instruction by monitoring unit 66, by main control module 5, control corresponding single battery module and stop electric discharge;
(64) when the voltage of the single battery module of energy-storage module 7, reach the upper limit of early warning voltage, will to equalizer 8, send instruction by monitoring unit 66, by equalizer 8, control corresponding single battery module and stop charging;
(65) when the temperature of the battery module in energy-storage module 7 reaches early warning temperature, the step that the corresponding battery module of control is stopped discharging and recharging;
(66) when the charge-discharge magnification in energy-storage module 7 reaches pre-charge-discharge magnification, the step that the corresponding energy-storage battery bag of control is stopped discharging and recharging.
Referring to Fig. 1 and Fig. 3, automatic generation amount is controlled (AGC) Coordination module 3, and for predicting and controlling the generated output of electricity generation system when grid-connected, this module comprises:
Electric network data acquiring unit 31, can read electrical network 1 metric data in real time from grid dispatching center;
Electric network data analytic unit 32, can carry out data processing and quality judgement, the residing control interval of judgement electrical network to described electrical network 1 metric data;
Generated output coordination unit 33, by real-time generation schedule, obtain basic point, and calculate electrical network 1 regulatory demand, and carry out regulating power distribution according to coordination control strategy, this generated output coordination unit is connected with described main control module, and to the driver module 42 of inversion module 4, send instruction by main control module 5, with power ratio control, export.
Described coordination control strategy comprises urgent regulation strategy: when electrical network 1 regulatory demand is positioned at urgent district, electricity generation system participates in regulating immediately, make electrical network 1 return to as early as possible normal condition, wherein participate in regulating representing that electricity generation system and other adjustable unit regulate simultaneously.
When electrical network 1 regulatory demand is positioned at urgent district, electricity generation system participates in regulating immediately; If do not need urgent adjusting, judge whether to need time urgent adjusting downwards.
When electrical network 1 does not need inferior urgent adjusting downwards, judge whether to need inferior urgent upwards adjusting, if need to regulate, electricity generation system participation upwards regulates; If do not need time urgent upwards adjusting, continue to judge whether normally upwards to regulate.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, make some being equal to substitute or obvious modification, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.

Claims (5)

1. solar energy and an energy and wind energy integrative electricity generation system, is characterized in that, this system comprises:
Wind-driven generator, for converting wind energy to electric energy, wherein this wind-driven generator adopts double feedback electric engine;
Blower voltage, electric current, rotating speed sampling module, the voltage while moving for detection of motor, electric current and rotating speed;
Solar panel, for being converted to electric energy by solar energy;
Energy-storage module, the electric energy obtaining for storing above-mentioned wind-driven generator and solar panel, the electric energy that wherein said wind-driven generator obtains is stored to this energy-storage module by rectifying device, the electric energy that described solar panel obtains is stored to this energy-storage module by DC/DC converter, and this energy-storage module comprises a plurality of battery modules;
Inversion module, for converting the electric energy of energy-storage module to alternating current, is connected with electrical network bus with main circuit breaker through step-up transformer;
Main control module, for controlling this operation of electric power system, coordinates the work of all parts and module.
2. electricity generation system as claimed in claim 1, is characterized in that, this system also comprises battery module monitoring device, and this monitoring device comprises as lower unit:
For measuring the temperature measurement unit of a plurality of battery module temperature of energy-storage module;
For measuring the voltage measurement unit of a plurality of battery module voltages of energy-storage module;
For according to relevant voltage and the temperature measured, obtain the total voltage of a plurality of battery modules and the computing unit of total current in energy-storage module;
For measuring the charging and discharging state and the measuring unit that discharges and recharges that discharges and recharges the time of a plurality of battery modules of energy-storage module;
For storing total voltage, total current, the voltage of a plurality of battery modules and the memory cell of temperature of a plurality of battery modules of energy-storage module;
Be used for according to the charging and discharging state of the total voltage obtaining, total current, a plurality of battery modules, discharge and recharge time and temperature, obtain energy-storage module monitoring parameter, the monitoring unit of simultaneously according to the parameter obtaining, the battery module in energy-storage battery bag being monitored.
3. electricity generation system as claimed in claim 2, it is characterized in that, described energy-storage module monitoring parameter comprises the remaining capacity estimation value of energy-storage module, real-time maximal input value, real-time peak power output value, real-time maximum wind value of dissolving, current stored energy and charge-discharge magnification.
4. electricity generation system as claimed in claim 3, it is characterized in that, described electricity generation system also comprises equalizer, described equalizer is connected in parallel on the two ends of described a plurality of battery modules, described monitoring unit is according to different charging battery module requirements, through described equalizer, export given charging current to battery module, the electric current of monitoring unit to single battery module, the state information such as voltage and temperature is carried out Real-Time Monitoring, monitoring result and predefined status signal are carried out to difference comparison, output respective drive signal, control the break-make of equalizer, by balance optimizing control strategy, improve performance and the cycle life of battery pack.
5. electricity generation system as claimed in claim 4, is characterized in that, this electricity generation system also comprises that automatic generation amount controls (AGC) Coordination module, and for predicting and controlling the generated output of electricity generation system when grid-connected, this module comprises:
Electric network data acquiring unit, can read electrical network metric data in real time from grid dispatching center;
Electric network data analytic unit, can carry out data processing and quality judgement, the residing control interval of judgement electrical network to described electrical network metric data;
Generated output coordination unit, by real-time generation schedule, obtain basic point, and calculate electrical network regulatory demand, and carry out regulating power distribution according to coordination control strategy, this generated output coordination unit is connected with described main control module, and to the driver module of inversion module, send instruction by main control module, with power ratio control, export.
CN201410410442.3A 2014-08-19 2014-08-19 A kind of solar energy and energy and wind energy integrative electricity generation system Expired - Fee Related CN104158216B (en)

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Cited By (2)

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CN105914257A (en) * 2016-04-26 2016-08-31 苏州阿特斯阳光电力科技有限公司 Data analysis based crystalline silica cell production process monitoring method
CN110266041A (en) * 2019-06-18 2019-09-20 姚志伟 A kind of energy storage, which is combined, regulates and controls connecting internet system with the wind-power electricity generation of inversion is concentrated

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