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CN104426147A - 配有储能装置的独立运行风电系统 - Google Patents

配有储能装置的独立运行风电系统 Download PDF

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Publication number
CN104426147A
CN104426147A CN201310390179.1A CN201310390179A CN104426147A CN 104426147 A CN104426147 A CN 104426147A CN 201310390179 A CN201310390179 A CN 201310390179A CN 104426147 A CN104426147 A CN 104426147A
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wind
energy storage
rectifier
power system
current transformer
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CN201310390179.1A
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郭庆梅
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
    • 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
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)
  • Wind Motors (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

本发明公开了发电系统技术领域内的一种配有储能装置的独立运行风电系统，其特征在于，包括风力机，所述风力机通过齿轮箱连接有风力发电机，所述风力发电机的输出端连接有整流器，所述整流器的输出端通过逆变器连接有负载；所述整流器的输出端与所述逆变器并联连接有变流器，所述变流器通过电机连接有飞轮储能电池。本发明利用飞轮储能技术具有寿命长、效率高、环保等优势，将其应用于风电系统中，可以有效解决独立运行风力发电系统的电能质量和电能储存问题，具有较快的充放电速度，较长的使用寿命且对环境无污染，储能能力不因外界温度等因素的变化而波动，储能十分稳定且具有高达90％的总效率。

Description

配有储能装置的独立运行风电系统
技术领域
本发明涉及一种发电系统，特别涉及一种配有储能装置的独立运行风电系统。
背景技术
风力发电的利用方式主要有两类：一类是作为常规电网电源。联网风力发电是大规模利用风能最经济的方式，商业化机组单机容量为150～1650kW，既可单独并网，也可有多台甚至成百上千台组成风力发电厂；另一类是独立运行供电，其中一种是在电网未通达的偏远地区，用小型风力发电机为蓄电池充电，再通过逆变器转换成交流电向终端电器供电，单机容量一般在0.1～10kW；另一种是采用中型风电机与柴油发电机或光伏太阳电池组成混合供电系统，目标系统容量约10200kW，可解决小型社区用电问题。
其不足之处在于：在独立运行供电中，利用小型风力发电机为蓄电池充电给电网未通达的偏远地区供电，由于所需的蓄电池容量大、投资高，经济上并不理想；且蓄电池的使用寿命较短，储能不稳定，储能效率也只有60％左右。
发明内容
本发明的目的是提供一种配有储能装置的独立运行风电系统，可以有效解决独立运行风力发电系统的电能质量和电能储存问题。
本发明的目的是这样实现的：配有储能装置的独立运行风电系统，包括风力机，所述风力机通过齿轮箱连接有风力发电机，所述风力发电机的输出端连接有整流器，所述整流器的输出端通过逆变器连接有负载；所述整流器的输出端与所述逆变器并联连接有变流器，所述变流器通过永磁电机连接有飞轮储能电池。
与现有技术相比，本发明的有益效果是：本发明利用飞轮储能技术具有寿命长、效率高、环保等优势，将其应用于风电系统中，可以有效解决独立运行风力发电系统的电能质量和电能储存问题，具有较快的充放电速度，较长的使用寿命且对环境无污染，储能能力不因外界温度等因素的变化而波动，储能十分稳定且具有高达90％的总效率。
作为本发明的优选方案，所述变流器为可双向输送的PWM高频变流器。其主要功能是实现飞轮储能电池的能量双向输送和变频调速。
作为本发明的进一步改进，所述整流器的输出端还并联有电容器。利用电容器两端电压不会发生突变的特性，保证整流器输出电压的稳定性，保证了电能质量。
附图说明
图1为本发明的结构示意图。
其中，1风力机；2齿轮箱；3风力发电机；4整流器；5逆变器；6负载；7变流器；8永磁电机；9飞轮储能电池；10电容器。
具体实施方式
下面结合附图对本发明作进一步详细描述。
如图1所示，配有储能装置的独立运行风电系统，包括风力机1，风力机1通过齿轮箱2连接有风力发电机3，风力发电机3的输出端连接有整流器4，整流器4的输出端通过逆变器5连接有负载6；整流器4的输出端与逆变器5并联连接有变流器7，变流器7通过永磁电机8连接有飞轮储能电池9。变流器7为可双向输送的PWM高频变流器。整流器4的输出端还并联有电容器10。
本发明在工作时，可根据不同的风力状况，选用以下三种不同形式向负载供电：
当风能充足或负载较小时，风力发电机3提供的电能一部分通过逆变器5提供给负载6，另一部分通过变流器7存储于飞轮储能电池9中。飞轮储能电池9的永磁电机8此时运行与电动运行状态，通过逆变器5的调速作用逐渐提高转速，将电能转换成机械能储存与飞轮转子中；
当风能不足或者负载较大是，系统有风力发电机3和飞轮储能电池9联合向负载6供电。变流器7此时工作于整流状态；相应的，永磁电机8处于发电运行状态，将储存于飞轮中的机械能转换成电能提供给负载；
当风力很小、风力发电机3停止发电时，系统由飞轮电池单独为负载提供能量。变流器7将永磁电机8发出的交流电整流成直流电，再通过逆变器5提供给负载。
综合以上分析可以看出，基于分析当地的风力资源和负载情况，选择适当的风力发电机3功率和与之匹配的飞轮储能电池9的容量，实现不间断供电是完全可能的，同时电能质量也能得到相当程度的改善。
本发明并不局限于上述实施例，在本发明公开的技术方案的基础上，本领域的技术人员根据所公开的技术内容，不需要创造性的劳动就可以对其中的一些技术特征作出一些替换和变形，这些替换和变形均在本发明的保护范围内。

Claims (3)

1.配有储能装置的独立运行风电系统，其特征在于，包括风力机，所述风力机通过齿轮箱连接有风力发电机，所述风力发电机的输出端连接有整流器，所述整流器的输出端通过逆变器连接有负载；所述整流器的输出端与所述逆变器并联连接有变流器，所述变流器通过电机连接有飞轮储能电池。
2.根据权利要求1所述的配有储能装置的独立运行风电系统，其特征在于，所述变流器为可双向输送的PWM高频变流器。
3.根据权利要求1所述的配有储能装置的独立运行风电系统，其特征在于，所述整流器的输出端还并联有电容器。
CN201310390179.1A 2013-08-30 2013-08-30 配有储能装置的独立运行风电系统 Pending CN104426147A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106787440A (zh) * 2016-12-24 2017-05-31 重庆宙盾新能源技术开发有限公司 发电机组辅助装置
RU185883U1 (ru) * 2018-08-06 2018-12-21 федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" Ветроэнергетическая установка

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106787440A (zh) * 2016-12-24 2017-05-31 重庆宙盾新能源技术开发有限公司 发电机组辅助装置
RU185883U1 (ru) * 2018-08-06 2018-12-21 федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" Ветроэнергетическая установка

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Application publication date: 20150318

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