基于用戶廣義耐受曲線的供電可靠性綜合評(píng)估方法研究
夏杰
(國網(wǎng)山東省電力公司濰坊供電公司,山東 濰坊 261000)
摘 要:隨著用電設(shè)備精密性的不斷提高,電壓暫降對(duì)用戶正常用電的影響越來越顯著,傳統(tǒng)供電可靠性評(píng)估方法的不足之處也逐漸顯現(xiàn)。通過構(gòu)造用戶廣義耐受曲線,并將電壓暫降能量損失函數(shù)及等效停電時(shí)間相結(jié)合,提出一種供電可靠性的綜合評(píng)估方法。對(duì)整個(gè)評(píng)估流程進(jìn)行了闡述,并進(jìn)行了仿真分析,結(jié)果表明,該方法能夠較為合理地將電壓暫降的影響納入可靠性分析,有利于對(duì)供電可靠性作出更為完善的評(píng)估。
關(guān)鍵詞:供電可靠性;綜合評(píng)估;耐受曲線;停電時(shí)間;修正指標(biāo)
中圖分類號(hào):TM711 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2021)01-0024-06
Comprehensive Evaluation Method of Power Supply Reliability Under
Voltage Sag Based on User's Generalized Withstand Curve
XIA Jie
(State Grid Shandong Electric Power Company Weifang Power Supply Company, Weifang 261000, China)
Abstract: With the continuous improvement of the precision of electrical equipment, the impact of voltage sag on the normal power consumptionof users become more and more significant, and the shortcomings of traditional power supply reliability evaluation methods aregradually emerged. In this paper, a comprehensive evaluation method of power supply reliability is proposed, it constructing the users generalizedwithstand curve and combining the energy loss function with the equivalent outage time of voltage sag. The evaluation process wasexplained, and simulation analysis was carried out. And the simulation results show that this method can reasonably bring the influence ofvoltage sag into the reliability analysis, which is conducive to a more perfect evaluation of power supply reliability.
Key words: power supply reliability; comprehensive evaluation; withstand curve; outage time; correction index
參考文獻(xiàn)
[1] 袁媛,吳丹岳,林焱,等. 電壓暫降評(píng)估體系研究[J]. 電網(wǎng)技術(shù),2010,34(6):128-133.
[2] 呂金炳,盧文清,劉創(chuàng)華,等. 基于能量指標(biāo)的電壓暫降嚴(yán)重程度評(píng)估方法研究[J] . 現(xiàn)代電力,2019,36(1):79-87.
[3] 盧文清,常乾坤,賈東強(qiáng),等. 設(shè)備側(cè)電壓暫降嚴(yán)重程度評(píng)估方法研究[J] . 電力自動(dòng)化設(shè)備,2019,39(1):175-182.
[4] HARDI S, DAUT I.Sensitivity of low voltageconsumer equipment to voltage sag[C]//4th International Power Engineering and Optimization Conference,2010.
[5] 歐陽森,石怡理,潘維,等. 一種新的敏感負(fù)荷電壓暫降敏感度評(píng)估方法[J]. 華南理工大學(xué)學(xué)報(bào)( 自然科學(xué)版),2013,41(8):9-14.
[6] 徐永海,陶順,肖湘寧. 電網(wǎng)中電壓暫降和短時(shí)間中斷[M]. 北京:中國電力出版社,2015.
[7] 徐永海,李晨懿,汪坤,等. 低壓變頻器對(duì)電網(wǎng)電壓暫降耐受特性及兼容性研究[J] . 電工技術(shù)學(xué)報(bào),2019,34(10):2216-2229.
[8] 蘭劍. 電網(wǎng)故障條件下電壓跌落評(píng)估及其應(yīng)用[D].武漢:武漢大學(xué),2014.
[9] 周翔,王豐華,黃榮輝,等. 考慮系統(tǒng)與敏感設(shè)備的變電站電壓暫降綜合評(píng)估[J] . 中國電機(jī)工程學(xué)報(bào),2015,35(8):1940-1946.