Damping support strategy of virtual synchronous machine
The invention discloses a damping support strategy for a virtual synchronous machine. The damping support strategy is specifically implemented according to the following steps of: 1, establishing a second-order model of a synchronous generator, and acquiring a power-frequency transfer function; 2, a...
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| creator | SHEN WEICHENG ZHENG XIANGYU MA ZHICHENG ZHANG BOLIN MA XIPING ZHEN WENXI WANG CHENYUN ZHANG GUANGRU CHEN BAIXU DONG KAISONG ZHU HONGYI ZHOU QIANG ZHAO LIN |
| description | The invention discloses a damping support strategy for a virtual synchronous machine. The damping support strategy is specifically implemented according to the following steps of: 1, establishing a second-order model of a synchronous generator, and acquiring a power-frequency transfer function; 2, applying power disturbance to the second-order model of the synchronous generator through a VSG grid-connected control circuit, and calculating a frequency response function under the power disturbance; and 3, deriving a frequency response function under power disturbance, and setting a damping coefficient to obtain a steady-state frequency after disturbance. The problem that the inertia time constant is not matched with damping is avoided, and the grid-connected stability and reliability of the virtual synchronous machine are improved.
本发明公开了一种虚拟同步机的阻尼支撑策略，具体按照以下步骤实施：步骤1、建立同步发电机二阶模型，获得功率-频率的传递函数；步骤2、通过VSG并网控制电路对同步发电机二阶模型施加功率扰动，计算该功率扰动下频率响应函数；步骤3、对功率扰动下频率响应函数求导，并设置阻尼系数，获得扰动后的稳态频率；避免惯性时间常数和阻尼不匹配的问题，增加的虚拟同步机并网的稳定性与可靠性 |
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本发明公开了一种虚拟同步机的阻尼支撑策略，具体按照以下步骤实施：步骤1、建立同步发电机二阶模型，获得功率-频率的传递函数；步骤2、通过VSG并网控制电路对同步发电机二阶模型施加功率扰动，计算该功率扰动下频率响应函数；步骤3、对功率扰动下频率响应函数求导，并设置阻尼系数，获得扰动后的稳态频率；避免惯性时间常数和阻尼不匹配的问题，增加的虚拟同步机并网的稳定性与可靠性</description><language>chi ; eng</language><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; SYSTEMS FOR STORING ELECTRIC ENERGY</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210903&DB=EPODOC&CC=CN&NR=113346517A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210903&DB=EPODOC&CC=CN&NR=113346517A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SHEN WEICHENG</creatorcontrib><creatorcontrib>ZHENG XIANGYU</creatorcontrib><creatorcontrib>MA ZHICHENG</creatorcontrib><creatorcontrib>ZHANG BOLIN</creatorcontrib><creatorcontrib>MA XIPING</creatorcontrib><creatorcontrib>ZHEN WENXI</creatorcontrib><creatorcontrib>WANG CHENYUN</creatorcontrib><creatorcontrib>ZHANG GUANGRU</creatorcontrib><creatorcontrib>CHEN BAIXU</creatorcontrib><creatorcontrib>DONG KAISONG</creatorcontrib><creatorcontrib>ZHU HONGYI</creatorcontrib><creatorcontrib>ZHOU QIANG</creatorcontrib><creatorcontrib>ZHAO LIN</creatorcontrib><title>Damping support strategy of virtual synchronous machine</title><description>The invention discloses a damping support strategy for a virtual synchronous machine. The damping support strategy is specifically implemented according to the following steps of: 1, establishing a second-order model of a synchronous generator, and acquiring a power-frequency transfer function; 2, applying power disturbance to the second-order model of the synchronous generator through a VSG grid-connected control circuit, and calculating a frequency response function under the power disturbance; and 3, deriving a frequency response function under power disturbance, and setting a damping coefficient to obtain a steady-state frequency after disturbance. The problem that the inertia time constant is not matched with damping is avoided, and the grid-connected stability and reliability of the virtual synchronous machine are improved.
本发明公开了一种虚拟同步机的阻尼支撑策略，具体按照以下步骤实施：步骤1、建立同步发电机二阶模型，获得功率-频率的传递函数；步骤2、通过VSG并网控制电路对同步发电机二阶模型施加功率扰动，计算该功率扰动下频率响应函数；步骤3、对功率扰动下频率响应函数求导，并设置阻尼系数，获得扰动后的稳态频率；避免惯性时间常数和阻尼不匹配的问题，增加的虚拟同步机并网的稳定性与可靠性</description><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>SYSTEMS FOR STORING ELECTRIC ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDB3ScwtyMxLVyguLSjILypRKC4pSixJTa9UyE9TKMssKilNzFEorsxLzijKz8svLVbITUzOyMxL5WFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8c5-hobGxiZmpobmjsbEqAEAJ74uqA</recordid><startdate>20210903</startdate><enddate>20210903</enddate><creator>SHEN WEICHENG</creator><creator>ZHENG XIANGYU</creator><creator>MA ZHICHENG</creator><creator>ZHANG BOLIN</creator><creator>MA XIPING</creator><creator>ZHEN WENXI</creator><creator>WANG CHENYUN</creator><creator>ZHANG GUANGRU</creator><creator>CHEN BAIXU</creator><creator>DONG KAISONG</creator><creator>ZHU HONGYI</creator><creator>ZHOU QIANG</creator><creator>ZHAO LIN</creator><scope>EVB</scope></search><sort><creationdate>20210903</creationdate><title>Damping support strategy of virtual synchronous machine</title><author>SHEN WEICHENG ; ZHENG XIANGYU ; MA ZHICHENG ; ZHANG BOLIN ; MA XIPING ; ZHEN WENXI ; WANG CHENYUN ; ZHANG GUANGRU ; CHEN BAIXU ; DONG KAISONG ; ZHU HONGYI ; ZHOU QIANG ; ZHAO LIN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN113346517A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2021</creationdate><topic>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>SYSTEMS FOR STORING ELECTRIC ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>SHEN WEICHENG</creatorcontrib><creatorcontrib>ZHENG XIANGYU</creatorcontrib><creatorcontrib>MA ZHICHENG</creatorcontrib><creatorcontrib>ZHANG BOLIN</creatorcontrib><creatorcontrib>MA XIPING</creatorcontrib><creatorcontrib>ZHEN WENXI</creatorcontrib><creatorcontrib>WANG CHENYUN</creatorcontrib><creatorcontrib>ZHANG GUANGRU</creatorcontrib><creatorcontrib>CHEN BAIXU</creatorcontrib><creatorcontrib>DONG KAISONG</creatorcontrib><creatorcontrib>ZHU HONGYI</creatorcontrib><creatorcontrib>ZHOU QIANG</creatorcontrib><creatorcontrib>ZHAO LIN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SHEN WEICHENG</au><au>ZHENG XIANGYU</au><au>MA ZHICHENG</au><au>ZHANG BOLIN</au><au>MA XIPING</au><au>ZHEN WENXI</au><au>WANG CHENYUN</au><au>ZHANG GUANGRU</au><au>CHEN BAIXU</au><au>DONG KAISONG</au><au>ZHU HONGYI</au><au>ZHOU QIANG</au><au>ZHAO LIN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Damping support strategy of virtual synchronous machine</title><date>2021-09-03</date><risdate>2021</risdate><abstract>The invention discloses a damping support strategy for a virtual synchronous machine. The damping support strategy is specifically implemented according to the following steps of: 1, establishing a second-order model of a synchronous generator, and acquiring a power-frequency transfer function; 2, applying power disturbance to the second-order model of the synchronous generator through a VSG grid-connected control circuit, and calculating a frequency response function under the power disturbance; and 3, deriving a frequency response function under power disturbance, and setting a damping coefficient to obtain a steady-state frequency after disturbance. The problem that the inertia time constant is not matched with damping is avoided, and the grid-connected stability and reliability of the virtual synchronous machine are improved.
本发明公开了一种虚拟同步机的阻尼支撑策略，具体按照以下步骤实施：步骤1、建立同步发电机二阶模型，获得功率-频率的传递函数；步骤2、通过VSG并网控制电路对同步发电机二阶模型施加功率扰动，计算该功率扰动下频率响应函数；步骤3、对功率扰动下频率响应函数求导，并设置阻尼系数，获得扰动后的稳态频率；避免惯性时间常数和阻尼不匹配的问题，增加的虚拟同步机并网的稳定性与可靠性</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | Damping support strategy of virtual synchronous machine |
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