本文選題：煤層氣抽水機(jī)　切入點(diǎn)：變頻　出處：《煤炭學(xué)報(bào)》2016年08期

【摘要】：由于煤層氣井抽水機(jī)電動(dòng)機(jī)負(fù)荷的動(dòng)態(tài)交變特性,導(dǎo)致抽水機(jī)電動(dòng)機(jī)周期性運(yùn)行于電動(dòng)和發(fā)電狀態(tài),造成電能嚴(yán)重浪費(fèi)。為解決這一問(wèn)題,結(jié)合抽水機(jī)負(fù)載及懸點(diǎn)運(yùn)動(dòng)規(guī)律,提出一種基于變頻器變頻-恒頻分段協(xié)調(diào)工作的抽水機(jī)電動(dòng)機(jī)節(jié)能控制新策略。該控制策略取消了抽水機(jī)按上下沖程劃分運(yùn)行區(qū)間的做法,將運(yùn)行區(qū)間重新劃分為變頻段和恒頻段;在變頻段改變抽水機(jī)電動(dòng)機(jī)工作頻率,將抽水機(jī)負(fù)荷端勢(shì)能轉(zhuǎn)化為動(dòng)能,抽水機(jī)依靠自身能量轉(zhuǎn)化運(yùn)行,電動(dòng)機(jī)不做功;在恒頻段電動(dòng)機(jī)工作于電動(dòng)狀態(tài),驅(qū)動(dòng)抽水機(jī)工作,此時(shí)電能轉(zhuǎn)化為機(jī)械能。在現(xiàn)場(chǎng)以一臺(tái)YVP180L-8,11 k W感應(yīng)電機(jī)及其驅(qū)動(dòng)的CYJY4-1.5-9 HB型煤層氣井抽水機(jī)作為試驗(yàn)平臺(tái),對(duì)變頻、恒頻以及提出的變頻-恒頻分段節(jié)能控制策略進(jìn)行綜合節(jié)能情況對(duì)比。現(xiàn)場(chǎng)實(shí)測(cè)結(jié)果表明:所提控制策略會(huì)使抽水機(jī)運(yùn)動(dòng)和負(fù)荷特性發(fā)生改變;同時(shí)該控制策略能夠有效解決能量回饋問(wèn)題,避免能量回饋電機(jī),較其他兩種控制策略系統(tǒng)節(jié)電率提高10%;該控制策略具有較強(qiáng)通用性,為煤層氣抽采系統(tǒng)節(jié)能降耗提供了新的研究思路和角度。
[Abstract]:Because of the dynamic alternating characteristic of the motor load of the pumping unit in the coalbed gas well, the pump motor runs periodically in the electric and power generation state, which results in the serious waste of electric energy. To solve this problem, combined with the moving law of the pumping machine load and the suspending point, A new energy saving control strategy for pumping machine motor based on frequency conversion and constant frequency section coordination of frequency converter is proposed, which cancels the method of dividing the operation interval of the pump according to the upper and lower stroke. The operating interval is divided into frequency conversion section and constant frequency band, the working frequency of the pump motor is changed in the variable frequency range, the potential energy at the load end of the pump is converted into kinetic energy, and the pump runs on its own energy, and the motor does not do work. In the constant frequency range, the motor works in the electric state and drives the pumping machine, and the electric energy is converted into mechanical energy. In the field, a YVP180L-811kW induction motor and its CYJY4-1.5-9 HB type coal-bed methane well pumping unit are used as the test platform, and the frequency conversion is compared. The comparison of energy saving situation between constant frequency and variable frequency and constant frequency subsection energy saving control strategy is carried out. The field test results show that the proposed control strategy will change the motion and load characteristics of the pump. At the same time, the control strategy can effectively solve the problem of energy feedback, avoid the energy feedback motor, compared with the other two control strategies, the power saving rate is increased by 10%. It provides a new research idea and angle for coal bed methane extraction system to save energy and reduce consumption.
【作者單位】： 中國(guó)礦業(yè)大學(xué)(北京)機(jī)電與信息工程學(xué)院;山西藍(lán)焰煤層氣集團(tuán)有限責(zé)任公司;深圳市禾望電氣股份有限公司;
【基金】：山西省煤基重點(diǎn)科技攻關(guān)資助項(xiàng)目(MQ2014-06) 山西省科技重大專項(xiàng)資助項(xiàng)目(20111101001)
【分類號(hào)】：TD636

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1 胡月星;恒速恒頻及變速恒頻風(fēng)力發(fā)電系統(tǒng)并網(wǎng)動(dòng)態(tài)仿真分析[D];太原理工大學(xué);2007年

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本文編號(hào)：1659014