【摘要】：考慮到區(qū)域內(nèi)用戶的熱、電需求,近年來以微型燃?xì)廨啓C(jī)為核心的熱電聯(lián)供系統(tǒng)在微網(wǎng)中得到廣泛應(yīng)用。如何協(xié)調(diào)調(diào)度微網(wǎng)的供熱、供電,是提高可再生能源吸納率、降低微網(wǎng)熱電聯(lián)供成本的關(guān)鍵。文中從用戶供熱舒適度的模糊性、微網(wǎng)供熱系統(tǒng)的熱慣性角度考慮,提出采用室內(nèi)熱舒適度指標(biāo)將熱負(fù)荷需求由傳統(tǒng)的曲線轉(zhuǎn)換為區(qū)間,從而使熱負(fù)荷在各時(shí)間點(diǎn)上具有彈性;同時(shí)以自回歸滑動(dòng)平均(ARMA)模型描述供熱系統(tǒng)多時(shí)段間的耦合關(guān)系,使供熱量在時(shí)間軸上具有一定的可調(diào)節(jié)性。文中將上述兩個(gè)特性統(tǒng)稱為熱負(fù)荷的二維可控性。算例分析了考慮熱負(fù)荷二維可控性后,微網(wǎng)在孤網(wǎng)/并網(wǎng)運(yùn)行時(shí)微型燃?xì)廨啓C(jī)運(yùn)行平穩(wěn)性、棄風(fēng)/光、購(gòu)/售電量等方面,結(jié)果顯示所述方法可有效減少熱—電剛性耦合,為實(shí)現(xiàn)微網(wǎng)中熱—電的時(shí)間平移和優(yōu)化匹配提供了一種新思路。
[Abstract]:Considering the heat and electricity demand of the users in the area, the heat and power cogeneration system with micro gas turbine as the core has been widely used in the micro grid in recent years. How to coordinate and dispatch the heating and power supply of microgrid is the key to increase the absorption rate of renewable energy and reduce the cost of microgrid cogeneration. Considering the fuzziness of heating comfort of users and the thermal inertia of micro-grid heating system, this paper puts forward that the indoor thermal comfort index is used to convert the heat load demand from traditional curve to interval, so that the heat load has elasticity at every time point. At the same time, the autoregressive moving average (ARMA) model is used to describe the coupling relationship between multiple time periods in the heating system, which makes the heat supply on the time axis adjustable to a certain extent. In this paper, the above two characteristics are referred to as the two-dimensional controllability of heat load. The calculation results show that the proposed method can effectively reduce the thermoelectric rigid coupling when considering the two-dimensional controllability of heat load, the microgrid can operate smoothly, abandon wind / light, and purchase / sell electricity in the isolated / grid-connected operation of the micro gas turbine, and the results show that the proposed method can effectively reduce the thermoelectric rigid coupling. It provides a new way to realize the time translation and optimal matching of thermoelectricity in microgrid.
【作者單位】： 浙江大學(xué)電氣工程學(xué)院;國(guó)網(wǎng)重慶市電力公司;香港理工大學(xué)電機(jī)工程學(xué)系;國(guó)網(wǎng)浙江省電力公司經(jīng)濟(jì)技術(shù)研究院;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃資助項(xiàng)目(2016YFB0901104)~~
【分類號(hào)】：TM73

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