随着分布式电源渗透率不断提高,配电网运行面临着源荷不确定性带来的灵活性不足问题。合理配置储能(energy storage system, ESS)和智能软开关(soft open point, SOP)等灵活性资源是解决该问题的关键。为此,从灵活性供需匹配度和传输能...随着分布式电源渗透率不断提高,配电网运行面临着源荷不确定性带来的灵活性不足问题。合理配置储能(energy storage system, ESS)和智能软开关(soft open point, SOP)等灵活性资源是解决该问题的关键。为此,从灵活性供需匹配度和传输能力2个方面提出了考虑配电网灵活性提升的ESS和SOP三层协同规划模型。其中,上层以ESS投资成本最小为目标对蓄电池和超级电容器等多时间尺度储能进行规划,中层以配电网年综合成本最小为目标对SOP进行规划,下层以各场景下的网络灵活性最优为目标进行优化,并采用自适应粒子群算法和二阶锥规划算法对模型进行求解。最后,在IEEE 33节点系统上验证了所提方法的有效性。结果表明,相比仅考虑单一时间尺度的规划方法,所提的ESS和SOP协同规划方法的配电网年综合成本降低了4.59%,实现了配电网经济灵活运行。展开更多
Objective:To compare the efficacy difference between moxibustion at sensitized-acupoints and non-sensitized-acupoints using the same group of acupoints.Methods:A total of 139 patients with chronic superficial gastriti...Objective:To compare the efficacy difference between moxibustion at sensitized-acupoints and non-sensitized-acupoints using the same group of acupoints.Methods:A total of 139 patients with chronic superficial gastritis were divided into a sensitized acupoint group(102 cases)and a non-sensitized acupoint group(37 cases)based on whether acupoint sensitization occurred.The SPSS version 19.0 statistical software propensity score matching function was used to balance the baseline data between the groups.Finally,29 pairs of matched patients were included,namely 29 cases in the sensitized acupoint group and 29 cases in the non-sensitized acupoint group.Both groups were treated with moxibustion therapy.The treatment lasted for 30 min per time,and was performed every other day for 8 weeks.Changes in the traditional Chinese medicine(TCM)symptom score and the short-form 36-item health survey(SF-36)score in both groups were observed before and after treatment,as well as the clinical efficacy.Results:The covariates of age,course of disease,TCM symptom score and SF-36 score in the two groups were balanced after matching(all P>0.05).After treatment,the total effective rate was 100.0%in the sensitized acupoint group and 79.3%in the non-sensitized acupoint group.The difference in the total effective rate between the two groups was statistically significant(P<0.01).After treatment and at the 4-week follow-up,the TCM symptom scores in the sensitized acupoint group were significantly lower than those in the non-sensitized acupoint group(all P<0.01);the SF-36 scores in the sensitized acupoint group were significantly higher than those in the non-sensitized acupoint group(all P<0.01).Conclusion:With the same group of acupoints,the sensitized acupoints have a better therapeutic effect and long-term efficacy than the non-sensitized acupoints in the treatment of chronic superficial gastritis.展开更多
文摘随着分布式电源渗透率不断提高,配电网运行面临着源荷不确定性带来的灵活性不足问题。合理配置储能(energy storage system, ESS)和智能软开关(soft open point, SOP)等灵活性资源是解决该问题的关键。为此,从灵活性供需匹配度和传输能力2个方面提出了考虑配电网灵活性提升的ESS和SOP三层协同规划模型。其中,上层以ESS投资成本最小为目标对蓄电池和超级电容器等多时间尺度储能进行规划,中层以配电网年综合成本最小为目标对SOP进行规划,下层以各场景下的网络灵活性最优为目标进行优化,并采用自适应粒子群算法和二阶锥规划算法对模型进行求解。最后,在IEEE 33节点系统上验证了所提方法的有效性。结果表明,相比仅考虑单一时间尺度的规划方法,所提的ESS和SOP协同规划方法的配电网年综合成本降低了4.59%,实现了配电网经济灵活运行。
文摘Objective:To compare the efficacy difference between moxibustion at sensitized-acupoints and non-sensitized-acupoints using the same group of acupoints.Methods:A total of 139 patients with chronic superficial gastritis were divided into a sensitized acupoint group(102 cases)and a non-sensitized acupoint group(37 cases)based on whether acupoint sensitization occurred.The SPSS version 19.0 statistical software propensity score matching function was used to balance the baseline data between the groups.Finally,29 pairs of matched patients were included,namely 29 cases in the sensitized acupoint group and 29 cases in the non-sensitized acupoint group.Both groups were treated with moxibustion therapy.The treatment lasted for 30 min per time,and was performed every other day for 8 weeks.Changes in the traditional Chinese medicine(TCM)symptom score and the short-form 36-item health survey(SF-36)score in both groups were observed before and after treatment,as well as the clinical efficacy.Results:The covariates of age,course of disease,TCM symptom score and SF-36 score in the two groups were balanced after matching(all P>0.05).After treatment,the total effective rate was 100.0%in the sensitized acupoint group and 79.3%in the non-sensitized acupoint group.The difference in the total effective rate between the two groups was statistically significant(P<0.01).After treatment and at the 4-week follow-up,the TCM symptom scores in the sensitized acupoint group were significantly lower than those in the non-sensitized acupoint group(all P<0.01);the SF-36 scores in the sensitized acupoint group were significantly higher than those in the non-sensitized acupoint group(all P<0.01).Conclusion:With the same group of acupoints,the sensitized acupoints have a better therapeutic effect and long-term efficacy than the non-sensitized acupoints in the treatment of chronic superficial gastritis.
