【摘要】：石油鉆井行業(yè)是一個工況復(fù)雜、高能耗的行業(yè),石油鉆機(jī)工作過程中產(chǎn)生的再生制動能量和公共直流母線的冗余能量目前不能有效回收利用,當(dāng)前這部分能量主要是接通到制動電阻,通過熱能的方式損耗。經(jīng)試驗(yàn)發(fā)現(xiàn),如果將電動機(jī)制動過程中產(chǎn)生的電能收集到儲能控制系統(tǒng)中,并將儲能控制系統(tǒng)與鉆機(jī)的主動力回路相連,該系統(tǒng)能夠抑制電能的波動、提高電能質(zhì)量。同時鉆機(jī)在起下鉆過程中,由于接鉆具、卸鉆具等鉆井作業(yè)時,存在必要的中斷時間,導(dǎo)致這些時段發(fā)電機(jī)處于輕負(fù)載狀態(tài)造成燃油的浪費(fèi),導(dǎo)致這部分能量不能有效利用,如何將這部分能量收集起來并作為鉆機(jī)作業(yè)能量的有效補(bǔ)充,也是目前儲能的一個研究目標(biāo)。本文首先在介紹了當(dāng)前鉆機(jī)能量損失及無法回收的原因,及雙儲能控制系統(tǒng)的研究現(xiàn)狀。在分析石油鉆機(jī)電氣結(jié)構(gòu)和作業(yè)工況的基礎(chǔ)上,分工況介紹通用的能耗制動設(shè)備使用情況,然后對雙儲能控制系統(tǒng)的儲能單元和DC/DC模塊進(jìn)行介紹和選型;再分析鉆機(jī)需要收集和釋放的能量信息,包含制動過程中產(chǎn)生的能量、某油田用戶對鉆機(jī)具體需求、鉆機(jī)冗余能量產(chǎn)生原因的基礎(chǔ)上,雙儲能控制系統(tǒng)策的儲能元件容量進(jìn)行選型計算,然后對儲能系統(tǒng)的控制策略、硬件和軟件設(shè)計進(jìn)行介紹,完成對整個雙儲能控制系統(tǒng)的設(shè)計工作。然后該系統(tǒng)在油田某鉆機(jī)上進(jìn)行充電和放電的實(shí)地驗(yàn)證,結(jié)果表明這種雙儲能控制系統(tǒng)可行,控制策略有效.應(yīng)用后鉆機(jī)相關(guān)設(shè)備的頻率和電壓波形趨穩(wěn),滿足作業(yè)工況下電網(wǎng)電能質(zhì)量的要求,減少了機(jī)器使用成本,保護(hù)了環(huán)境。
[Abstract]:The petroleum drilling industry is an industry with complex working conditions and high energy consumption. At present, the regenerative braking energy generated by the oil drilling rig and the redundant energy of the common DC bus can not be effectively recycled. At present, this part of the energy is mainly connected to the brake resistance, through the way of heat loss. It is found by experiments that if the electric energy generated in the motor braking process is collected into the energy storage control system and the energy storage control system is connected with the main power loop of the drilling rig, the system can restrain the fluctuation of the electric energy and improve the power quality. At the same time, during the drilling process of drilling rig, due to the existence of necessary interruption time in drilling operations, such as connecting drilling tools and unloading drilling tools, the generator in these periods is in a light load state, resulting in the waste of fuel oil, and this part of energy cannot be effectively utilized. How to collect this part of energy as an effective supplement of drilling rig operation energy is also a research goal of energy storage at present. This paper first introduces the reason of energy loss and unrecoverable of drilling rig, and the research status of dual energy storage control system. Based on the analysis of the electric structure and the working conditions of the oil drilling rig, the use of the general energy consumption braking equipment is introduced. Then, the energy storage unit and the DC/DC module of the dual energy storage control system are introduced and selected. On the basis of analyzing the energy information needed to be collected and released by drilling rig, including the energy generated in the braking process, the specific demand of a certain oil field user for drilling rig, and the reasons for the production of redundant energy of drilling rig, The capacity of the energy storage components of the dual energy storage control system is selected and calculated. Then the control strategy, hardware and software design of the energy storage system are introduced, and the design of the dual energy storage control system is completed. Then the system is verified by charging and discharging on a drilling rig in oil field. The results show that the dual energy storage control system is feasible and the control strategy is effective. After application, the frequency and voltage waveform of the related equipment of drilling rig tend to stabilize, which can meet the requirements of power quality of power network under operation conditions, reduce the cost of machine use and protect the environment.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE922

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