【摘要】：引入微網(wǎng)總負(fù)荷與風(fēng)光等間歇性能源出力的差值——等效負(fù)荷作為具有穩(wěn)定可控輸出的微電源總發(fā)電參考量進(jìn)行研究。通過在微網(wǎng)需求側(cè)向能量管理系統(tǒng)(EMS)預(yù)約,儲水式電熱水器(WSH)群進(jìn)行響應(yīng)以平滑微網(wǎng)等效負(fù)荷功率波動。首先,建立了等效負(fù)荷的模型、基于反向變化頻次比的風(fēng)光出力跟隨總負(fù)荷功率波動狀況的評價指標(biāo),并分析了需求側(cè)WSH群響應(yīng)參與微網(wǎng)能量管理的可行性,計及WSH的傳導(dǎo)能量、換位能量和加熱能量,建立了WSH群的溫度模型。其次,依據(jù)需求側(cè)預(yù)約用水或常規(guī)用水時間、量值和用戶主動控制及WSH溫度上限,建立動態(tài)可控WSH群并計算其反向溫度值,根據(jù)反向溫度值排序結(jié)果將投入待機(jī)WSH與切除加熱WSH兩個過程統(tǒng)一,形成了基于需求側(cè)預(yù)約WSH群響應(yīng)的平滑微網(wǎng)等效負(fù)荷功率波動控制策略。最后,應(yīng)用某微網(wǎng)實(shí)際案例數(shù)據(jù)驗(yàn)證了該控制策略的有效性。
[Abstract]:The equivalent load, which is the difference between the total load of microgrid and the output of intermittent energy such as solar energy, is studied as the total power generation reference of micro-power supply with stable and controllable output. By reserving the lateral energy management system (EMS) of microgrid demand, the (WSH) group of water storage electric water heater responds to smooth the fluctuation of equivalent load power of microgrid. First of all, the equivalent load model is established, and the evaluation index of the fluctuation condition of the wind power following the total load based on the reverse frequency ratio is established, and the feasibility of the demand-side WSH group response participating in the microgrid energy management is analyzed. Considering the conduction energy, transposition energy and heating energy of WSH, the temperature model of WSH group is established. Secondly, the dynamic controllable WSH group is set up and the reverse temperature value is calculated according to the time, quantity, user active control and WSH temperature upper limit of the demand side water reservation or conventional water use, and then the dynamic controllable WSH group is established and the reverse temperature value is calculated. According to the results of reverse temperature ordering, the two processes of putting into standby WSH and removing and heating WSH are unified, and a smooth micro-grid equivalent load power fluctuation control strategy based on the demand side reservation WSH group response is formed. Finally, the effectiveness of the control strategy is verified by a practical case of a microgrid.
【作者單位】： 國網(wǎng)湖南省電力公司衡陽供電分公司;新疆大學(xué)電氣工程學(xué)院;
【基金】：國家國際科技合作專項(xiàng)資助項(xiàng)目(2013DFG61520)~~
【分類號】：TM727

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