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云南电网异步联网运行后广西北电南送断面调控分析 被引量:7
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作者 程哲 邱生敏 翁振星 《广东电力》 2016年第10期75-78,共4页
云南电网转为异步联网运行后南方电网主网潮流分布发生显著变化,尤其云南异步联网调试及试运行期间,处于贵州及云南南部送电出口之间的广西北电南送通道由北向南出现持续重载情况。采用BPA计算程序及调度员潮流分析模块对相关断面调控... 云南电网转为异步联网运行后南方电网主网潮流分布发生显著变化,尤其云南异步联网调试及试运行期间,处于贵州及云南南部送电出口之间的广西北电南送通道由北向南出现持续重载情况。采用BPA计算程序及调度员潮流分析模块对相关断面调控方式进行分析,计算各调控手段对该断面的灵敏度。分析结果表明,广西北电南送通道可以短时通过调整广西南部、北部机组出力以及贵州外送潮流进行调控,后续需加快鲁西背靠背直流异步联网工程、武百线、永富直流送广西工程等相关工程投产进度,以缓解广西北电南送断面重载问题。 展开更多
关键词 异步联网 北电南送 断面调控 灵敏度分析
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基于数据分析技术的高精度负荷预测与电网智能断面调控 被引量:1
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作者 张建国 常倩 《黑龙江电力》 CAS 2022年第2期155-159,166,共6页
针对电力系统数据分析技术,分析基于循环神经网络的长短期记忆结构,阐述电力负荷预测原理和方法,制定基于长短期记忆高精度预测流程。同时,对互联系统联络线功率交换进行分析,提出智能断面控制策略,建立考虑联络线功率的调度模型,对所... 针对电力系统数据分析技术,分析基于循环神经网络的长短期记忆结构,阐述电力负荷预测原理和方法,制定基于长短期记忆高精度预测流程。同时,对互联系统联络线功率交换进行分析,提出智能断面控制策略,建立考虑联络线功率的调度模型,对所提的负荷预测以及联络线功率控制模型进行仿真分析,验证所提方法的有效性。 展开更多
关键词 数据分析 负荷预测 断面调控 联络线功率
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基于灵敏度分析的输电通道断面调控策略研究
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作者 张馨介 严涵 《机电信息》 2021年第26期20-21,24,共3页
输电通道的断面调控是电网稳定运行的重要保障,其调控效率直接影响到各区域电网的安全稳定运行。针对电力系统运行过程中因输送潮流过大引起断面越限的实际问题,基于不同区域电厂对不同输电线路潮流的灵敏度差异,提出一种对重要输电通... 输电通道的断面调控是电网稳定运行的重要保障,其调控效率直接影响到各区域电网的安全稳定运行。针对电力系统运行过程中因输送潮流过大引起断面越限的实际问题,基于不同区域电厂对不同输电线路潮流的灵敏度差异,提出一种对重要输电通道断面进行快速、准确调控的策略,通过算例验证,该策略可有效提高调度运行中断面调控的效率。 展开更多
关键词 电网运行 断面调控 灵敏度 实时调控
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Truth telling for patients with esophageal squamous cell carcinoma in Henan,China 被引量:2
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作者 Lian-Qun Zhang Pei-Nan Chen +14 位作者 Hai-Ling Wang Li Sun Xue-Ke Zhao Xin Song Min-Jie Wu Tang-Juan Zhang Ling-Fen Ji Wei-Li Han Zong-Min Fan Yuan Yuan Hai-Jun Yang Jian-Po Wang Fu-You Zhou Yi-Jun Qi Li-Dong Wang 《Cancer Biology & Medicine》 SCIE CAS CSCD 2017年第1期83-89,共7页
Objective: This study aims to investigate the truth-telling status and the relevant factors of esophageal squamous cell carcinoma(ESCC) patients in Henan, China.Methods: A cross-sectional study from April to June 2015... Objective: This study aims to investigate the truth-telling status and the relevant factors of esophageal squamous cell carcinoma(ESCC) patients in Henan, China.Methods: A cross-sectional study from April to June 2015 using questionnaires was given to 301 family members of hospitalized ESCC patients based in three affiliated hospitals of Zhengzhou University(i.e., The First Hospital, The Second Hospital, and Tumor Hospital) and Anyang Tumor Hospital.Results: Among the 41.9%(126/301) hospitalized ESCC patients who knew of their true diagnoses, only 4.0% patients were informed by their corresponding responsible doctors, 39.7% by their family members, and 56.3% by themselves. Univariate analyses showed that disclosure of confirmed ESCC diagnosis to patients was correlated with gender, family history of cancer(FHC), education level, vocation, hospital administrative level, and attitudes of family members(P < 0.05). Furthermore,multivariate analysis indicated that attitude of family members was the most important and an independent factor for diagnosis disclosure. Those patients with a negative FHC, under-education, manual occupation, advanced stages, and hospitalized in municipal hospitals exhibited a low rate of truth telling.Conclusions: Truth telling for ESCC patients in Henan is not prevalent and may be improved through consultation with family members, particularly for patients with a negative FHC, poor education, manual occupation, and advanced stages. 展开更多
关键词 Truth telling esophageal squamous cell carcinoma DIAGNOSIS
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The Behavioral Consequences of Parents Presumed Media Influence on Restrictive Mediation and Co-viewing/Using Media
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作者 Gabriella Sandstig, Bengt Johansson Karin Ringsberg 《Journalism and Mass Communication》 2013年第7期452-463,共12页
This study aims to fertilize research on parental mediation with the importance of parents' media attitudes in terms of parental third-person effects and its varieties. The explanatory power of these perceptions on b... This study aims to fertilize research on parental mediation with the importance of parents' media attitudes in terms of parental third-person effects and its varieties. The explanatory power of these perceptions on behavioral consequences as types of parental mediation is analyzed with control for previously known factors. Data from a cross-sectional population survey in Sweden 2011 covered a representative sample of children, aged 2-17 years in total 1461. The results show that the parental second-person perceptions explain (i.e., general belief in media effects) more than parental third-person perceptions. Parental second-person perceptions together with the age of the child explain most of the restrictive mediation and the effects of parental second-person perceptions on restrictive mediation increase with the parents lesser control of the media type. 展开更多
关键词 parental third-person effects parental second-person perceptions parental mediation children
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