直流微电网多储能单元均衡控制策略:改进下垂控制实现不同容量蓄电池协调,快速均衡SOC并维持母线电压稳定,直流微电网多储能单元均衡控制策略:改进下垂控制实现不同蓄电池协调与SOC均衡,增加母线电压补偿环
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直流微电网多储能单元均衡控制策略:改进下垂控制实现不同容量蓄电池协调,快速均衡SOC并维持母线电压稳定,直流微电网多储能单元均衡控制策略:改进下垂控制实现不同蓄电池协调与SOC均衡,增加母线电压补偿环节,维持电压稳定且提高可塑性,直流微电网多储能单元的均衡控制,改进下垂控制,分段下垂控制,实现不同容量蓄电池的协调控制,考虑蓄电池容量比与功率差值,加快蓄电池SOC均衡速度,最后在SOC差值到达一定范围内后,通过初始下垂系数、容量比、与平均SOC的差值使SOC趋于一致。添加了母线电压补偿环节,在源荷功率差变化时,加快母线电压恢复,在稳态时,也能始终保持母线电压维持在额定值 可塑性高。,核心关键词:直流微电网; 均衡控制; 改进下垂控制; 分段下垂控制; 蓄电池协调控制; 蓄电池SOC均衡速度; 母线电压补偿环节; 电压恢复; 稳态电压。,直流微电网多储能单元均衡控制策略:分段下垂与母线电压快速恢复技术 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90403799/2/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90403799/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">直流微电网是一种新型的电力系统<span class="ff2">,</span>其具有分散性<span class="ff3">、</span>可靠性和可持续性等优点<span class="ff2">,</span>被广泛应用于电力系</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">统中<span class="ff3">。</span>然而<span class="ff2">,</span>随着微电网规模的增大和储能技术的广泛应用<span class="ff2">,</span>直流微电网中储能单元之间的均衡控制</div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">问题变得日益突出<span class="ff3">。</span></div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">在直流微电网中<span class="ff2">,</span>多储能单元的均衡控制是实现系统稳定运行的关键<span class="ff3">。</span>随着储能单元容量的增加<span class="ff2">,</span>单</div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">个储能单元的功率输出和充放电速度也相应增加<span class="ff2">,</span>从而导致储能单元之间的<span class="_ _0"> </span><span class="ff4">SOC<span class="ff2">(</span>State of </span></div><div class="t m0 x1 h2 y6 ff4 fs0 fc0 sc0 ls0 ws0">Charge<span class="ff2">,<span class="ff1">电池电量状态</span>)<span class="ff1">差异</span>,<span class="ff1">进而影响系统的运行稳定性<span class="ff3">。</span>因此</span>,<span class="ff1">如何改进储能单元的均衡控制</span></span></div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">策略<span class="ff2">,</span>提高系统的能量利用效率成为当前研究的重点之一<span class="ff3">。</span></div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">针对上述问题<span class="ff2">,</span>本文提出了一种改进的均衡控制策略<span class="ff2">,</span>包括下垂控制和分段下垂控制<span class="ff3">。</span>首先<span class="ff2">,</span>根据不</div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">同容量的蓄电池<span class="ff2">,</span>我们采用分段下垂控制策略<span class="ff2">,</span>将储能单元分成若干组<span class="ff2">,</span>每组中的蓄电池容量相对接</div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">近<span class="ff2">,</span>并通过下垂控制策略来协调不同组之间的<span class="_ _0"> </span><span class="ff4">SOC<span class="_ _1"> </span></span>差异<span class="ff3">。</span>通过考虑蓄电池容量比与功率差值<span class="ff2">,</span>可以加</div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">快蓄电池<span class="_ _0"> </span><span class="ff4">SOC<span class="_ _1"> </span></span>均衡的速度<span class="ff2">,</span>从而提高系统的能量利用效率<span class="ff3">。</span></div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">另外<span class="ff2">,</span>为了进一步提高系统的稳定性和可塑性<span class="ff2">,</span>本文还引入了母线电压补偿环节<span class="ff3">。</span>在源荷功率差发生</div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">变化时<span class="ff2">,</span>通过加快母线电压的恢复速度<span class="ff2">,</span>保证系统的电压稳定性<span class="ff3">。</span>同时<span class="ff2">,</span>在系统稳态运行时<span class="ff2">,</span>我们通</div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">过控制母线电压维持在额定值<span class="ff2">,</span>从而保证系统的可靠性<span class="ff3">。</span></div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">在实际应用中<span class="ff2">,</span>我们还考虑了储能单元之间的容量比和平均<span class="_ _0"> </span><span class="ff4">SOC<span class="_ _1"> </span></span>的差值<span class="ff3">。</span>通过调整初始下垂系数<span class="ff3">、</span>容</div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">量比和与平均<span class="_ _0"> </span><span class="ff4">SOC<span class="_ _1"> </span></span>的差值<span class="ff2">,</span>可以使得系统中不同储能单元的<span class="_ _0"> </span><span class="ff4">SOC<span class="_ _1"> </span></span>趋于一致<span class="ff2">,</span>从而实现均衡控制<span class="ff3">。</span></div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">综上所述<span class="ff2">,</span>本文提出了一种直流微电网多储能单元的均衡控制策略<span class="ff2">,</span>并引入了母线电压补偿环节<span class="ff2">,</span>通</div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">过改进下垂控制和分段下垂控制的方法<span class="ff2">,</span>实现不同容量蓄电池的协调控制<span class="ff2">,</span>加快蓄电池<span class="_ _0"> </span><span class="ff4">SOC<span class="_ _1"> </span></span>均衡速度</div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">,<span class="ff1">同时通过控制母线电压</span>,<span class="ff1">保证系统的稳定性和可靠性<span class="ff3">。</span>该策略在实际应用中具有较高的可塑性和灵</span></div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">活性<span class="ff2">,</span>能够适应不同规模和容量的直流微电网系统的需求<span class="ff3">。</span></div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>