发展微电网是合理利用可再生能源的重要途径,储能系统在协调微电网中多类型能源并实现高效的协同优化过程中发挥了重要的作用。本文构建了同时考虑分布式储能系统(distributed energy storage systems,DESSs)和集中式储能系统(centraliz...发展微电网是合理利用可再生能源的重要途径,储能系统在协调微电网中多类型能源并实现高效的协同优化过程中发挥了重要的作用。本文构建了同时考虑分布式储能系统(distributed energy storage systems,DESSs)和集中式储能系统(centralized energy storage system,CESS)的微电网负荷优化调度模型,该模型同时考虑了微电网的经济成本和稳定性,旨在降低微电网经济成本的同时增加微电网的稳定性。同时,提出的调度模型考虑了需求响应的影响。实验表明,与只有单一DESSs的微电网相比,同时含有DESSs和CESS的微电网可以进一步地降低微电网的经济成本,并提高微电网的稳定性。而微电网通过参与需求响应能够实现更低的经济成本和更高的稳定性。此外,研究发现经济成本和稳定性权重因子对微电网调度的影响,权重因子的选取是微电网经济性和稳定性之间的权衡,提出了兼顾微电网经济性与稳定性的最优解的求解方法。本文的研究对于具有DESSs和CESS的微电网的经济稳定运行具有重要的现实意义。展开更多
Objective:To summarize the current evidence for 8 frequently prescribed Chinese herbal formulas(CHF)as treatments for angina pectoris in patients with coronary heart disease(CHD)and the associated adverse reactions.Me...Objective:To summarize the current evidence for 8 frequently prescribed Chinese herbal formulas(CHF)as treatments for angina pectoris in patients with coronary heart disease(CHD)and the associated adverse reactions.Methods:Seven electronic databases were screened from their inception through July 2018 for all evidence related to classical CHF for the treatment of patients with CHD.Results:CHF improves CHD outcomes in terms of angina pectoris,electrocardiogram results,Chinese medicine syndromes and biomarkers iomarkers.The combination of CHF and Western medicine(WM)is more effective on CHD than WM alone.The use of CHF to treat CHD shows the same or better clinical effects as the use of WM alone.The 8 investigated CHF do not induce hepatic and renal toxicity or other serious adverse effects.Conclusions:The safety and efficacy of 8 frequently prescribed herbal formulas for treating CHD have been confirmed in many studies.The findings of these studies are positive but should be interpreted cautiously due to the poor methodological quality of the randomized controlled trials(RCTs)and meta-analyses.Additional high-quality,multi-center,large-sample RCTs should be performed to confirm these results.展开更多
文摘发展微电网是合理利用可再生能源的重要途径,储能系统在协调微电网中多类型能源并实现高效的协同优化过程中发挥了重要的作用。本文构建了同时考虑分布式储能系统(distributed energy storage systems,DESSs)和集中式储能系统(centralized energy storage system,CESS)的微电网负荷优化调度模型,该模型同时考虑了微电网的经济成本和稳定性,旨在降低微电网经济成本的同时增加微电网的稳定性。同时,提出的调度模型考虑了需求响应的影响。实验表明,与只有单一DESSs的微电网相比,同时含有DESSs和CESS的微电网可以进一步地降低微电网的经济成本,并提高微电网的稳定性。而微电网通过参与需求响应能够实现更低的经济成本和更高的稳定性。此外,研究发现经济成本和稳定性权重因子对微电网调度的影响,权重因子的选取是微电网经济性和稳定性之间的权衡,提出了兼顾微电网经济性与稳定性的最优解的求解方法。本文的研究对于具有DESSs和CESS的微电网的经济稳定运行具有重要的现实意义。
基金Supported by dedicated funds from the State Administration of Traditional Chinese Medicine(No.201207001)the Twelfth Five-year Plan of China(No.ZZ0808005)。
文摘Objective:To summarize the current evidence for 8 frequently prescribed Chinese herbal formulas(CHF)as treatments for angina pectoris in patients with coronary heart disease(CHD)and the associated adverse reactions.Methods:Seven electronic databases were screened from their inception through July 2018 for all evidence related to classical CHF for the treatment of patients with CHD.Results:CHF improves CHD outcomes in terms of angina pectoris,electrocardiogram results,Chinese medicine syndromes and biomarkers iomarkers.The combination of CHF and Western medicine(WM)is more effective on CHD than WM alone.The use of CHF to treat CHD shows the same or better clinical effects as the use of WM alone.The 8 investigated CHF do not induce hepatic and renal toxicity or other serious adverse effects.Conclusions:The safety and efficacy of 8 frequently prescribed herbal formulas for treating CHD have been confirmed in many studies.The findings of these studies are positive but should be interpreted cautiously due to the poor methodological quality of the randomized controlled trials(RCTs)and meta-analyses.Additional high-quality,multi-center,large-sample RCTs should be performed to confirm these results.
