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摘要：新型电力系统建设背景下，分布式光伏爆发增长、柔性负荷大量涌现的配电领域正在经历深刻变革。配网可调节资源挖掘利用既能解决配网分布式新能源增加导致的反向重过载、电压越限等问题，还有助于缓解主网运行压力。首先，提炼了配网可调节资源利用技术存在的痛点问题，指出配网电力系统运营模式转型是解决问题的基础所在。回顾分析了集中式、分散式等国内外运营模式与微网、虚拟电厂等多种配电系统形式在解决配网运行问题方面存在的优缺点。提出适应中国大电网集中调度模式的配网集中-分布式协同自治调控的运行新范式，依托台区智能终端，通过“内部自治、相邻互济、整体协同”的协同自治调控模式，实现配调-台区-终端分层分级优化调控，为新型电力系统提供全新的技术路径。最后，归纳了协同自治调控运营模式下的配网关键技术和未来研究方向。

在各企业不断提高信息化应用水平的当下，企业一方面容易陷入单个系统信息孤岛，或者各系统不能有效、高效协同地运行；另一方面是企业特别注重内部信息化系统建设，但是对于外部业务合作方重视程度不足。对于制造业企业，采购是一种数量较多、频次较高的业务。以中粮黄海为例，对油脂加工厂采购业务自动化工作流程管理实践进行了介绍。中粮黄海公司在实现较高程度的信息化覆盖和普及后，全面梳理、剖析采购业务亟需解决的问题，通过文本标准化、流程再造，最终实现了采购业务的全流程自动化与闭环管理。采购业务自动化工作流程管理提高了工作效率，降低了工作强度，促进了企业与供应商的高效、便捷协作。 As companies continuing to improve the level of informatization applications, on the one hand, companies are prone to fall into the confusion of a single system information island or the ineffective and efficient coordination of various systems; on the other hand, companies pay special attention to the construction of internal information systems, but for external business partners insufficient attention. For manufacturing companies, procurement is a business with a large number and high frequency. Taking COFCO Huanghai as an example, the automation workflow management pracice for procurement business in oil processing plant was introduced. After achieving a relatively high degree of informatization coverage and popularization, COFCO Huanghai has comprehensively sorted out and analyzed the problems that urgently need to be solved in the procurement business, and finally realized the full-process automation and closed-loop management of the procurement business through text standardization and process reengineering. It improves procurement efficiency, reduces work intensity, and promotes efficient and convenient collaboration between enterprises and suppliers.

电热综合能源系统中的热力管网由于较强的热惯性而具备被动储热能力，可以提高电力系统的调节能力，为大规模可再生能源并网消纳提供空间。利用热力管网储能的方法可在不增加额外设备与投资的前提下，仅通过电力、热力系统的协调优化，达到平抑可再生能源波动性与间歇性、提高可再生能源使用率的目标。该方法已成为目前较具潜力的灵活性提升手段之一，逐渐受到国内外广泛关注。热力系统本身具有多变量、非线性、时延性等特点，且热力管网运行调节独立于电力系统调度之外，导致在刻画评估热力管网所具备的调节能力时，面临电热系统动态建模难以兼容、异质能源系统运行机制难以协调等瓶颈。研究围绕热力管网动态特性建模及电热协调优化等方面，对利用热力管网热惯性提升电热综合能源系统调节能力的研究方法展开回顾：比较分析了节点法、元素法、集总参数法、等效热电路法及能路法等动态建模方法的优劣，剖析了电力系统与热力管网协调运行研究中的关键要素，并针对进一步研究方向提出了几点建议。

首先介绍目前无线通信中常用的3种调度算法。为了提高频谱利用率,通过仿真比较了3种常用调度算法对系统性能的影响,提出基于QoS（服务质量）业务的比例公平调度算法。该调度算法兼容了其他调度算法的优点。实验中对用户配置不同的QoS参数,从吞吐量的角度来验证不同配置的用户有不同的吞吐量,而且系统会优先保障最优用户的需求。该调度算法提高了系统的最大吞吐量,满足了用户调度的公平性,给用户提供了不同的业务服务,保障了用户的不同需求。

文章介绍了一种集数据信号和视频信号收发功能于一体的光收发模块——以太网无源光网络（EPON）单纤三向光收发模块。该模块由单纤三向光组件和相应的驱动、放大和控制电路组成,实现了语音、数据和视频3种业务在物理层的融合。依照相关标准对该模块进行了测试,测试结果表明,该模块能满足三重播放条件下的应用要求。

基于LabVIEW虚拟仪器平台,研制了一套可调谐取样光栅分布布拉格反射式（Sampled Grating Distributed Bragg Reflector,SG-DBR）激光器的波长自动测试控制系统。该系统能对四段式SG-DBR激光器进行电流扫描,采集、分析其输出光谱,生成SG-DBR激光器的“波长-电流”数据查询表;并且通过调用数据查询表,实现对SG-DBR激光器输出波长的控制。

Objective To investigate the effect of self-made negative pressure drainage devices on the recovery of patients with severe facial trauma after plastic surgery. Methods A retrospective analysis was performed on 574 patients with severe facial trauma who underwent first-stage post-traumatic plastic repair admitted to the Department of Plastic and Burn Surgery of our hospital from November 2020 to June 2022. Among them, 277 patients in the observation group were placed with self-made negative pressure drainage devices after the operation, while 297 patients in the control group were not placed with negative pressure drainage after the operation. The Hospitalization period, healing time, complications, scar hyperplasia, the score of Vancouver Scar Scale(VSS), and patient satisfaction were compared between the two groups. Results Among the two groups, the hospitalization days of the observation group were (4.87±2.31) and that of the control group was (5.57±2.52), the difference was statistically significant (P<0.05). The difference between healing time was of no statistical significance (P＞0.05). The complication rate of the observation group was 2.5% and that of the control group was 6.4%. The differences were statistically significant (P<0.05). In the observation group, 15 patients with scar hyperplasia, the incidence rate was 5.4%, and the average VSS score of the patients with scar hyperplasia was (6.27±1.03), while in the control group, 33 patients with scar hyperplasia, the incidence rate was 11.1%, the average VSS score was (7.79±1.85), and the differences were statistically significant (P<0.05). The percentage of satisfied, relatively satisfied and dissatisfied patients in the observation group was 66.8%, 26.4%, 6.9% respectively, and that in the control group was 58.2%, 25.3%, 16.5% respectively, with a statistical significant difference (P<0.05). Conclusion Self-made negative pressure drainage devices can shorten the hospitalization period, reduce complications, reduce scar hyperplasia, and do not affect the healing of the surgical site after plastic surgery for patients with severe facial trauma. It is accompanied by a good prognosis and high satisfaction. [ABSTRACT FROM AUTHOR]

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The dissociation dynamics of CF4 molecules by electron collisions with impact energy of 1.0 keV was studied by using an ion momentum imaging spectrometer.In the experiment, the three-dimensional momentum vectors of the fragment ions were measured and two isomerization channels for F+2 formation from CF2+4, i. e. F+2+CF+2and CF++F+2+F, were identified by ion time-of-flight correlation map.The kinetic energy and kinetic energy release distributions of the two channels were obtained. For the three-body dissociation channel, we analyzed the momentum correlation of the dissociated fragments using the three-body dynamics analysis schemes such as the Dalitz diagram and Newton diagram. The channel is dominated by the back-to-back emission of two charged ions, and the neutral F atom acts as a spectator which only gets a very small recoil momentum. [ABSTRACT FROM AUTHOR]

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In order to meet the demands of renewable energy resources intake and power quality enhancement of distributed generation systems, the key technologies of the multi-functional grid-tied inverter (MFGTI) with power quality management function were studied. To address the problems of low precision of compensation current detection method and poor tracking effect of control method in traditional control scheme, an integrated control scheme based on improved sliding mode control was proposed. Firstly, the mean value algorithm was introduced into the harmonic and reactive power detection method based on the Fryze-Buchholz-Depenbrock (FBD) power theory to improve the accuracy and response speed of the compensation current detection, so as to enhanced the accuracy of command current. Then, based on the sliding mode control (SMC) and the mode predictive control (MPC), the MPC-SMC strategy was proposed, which further improved the high precision and fast tracking control performance of the MFGTI for the complex reference current. Finally, based on MATLAB/ Simulink, the proposed control scheme was verified through simulation under different conditions. The results confirm the effectiveness and feasibility of the proposed control strategies. [ABSTRACT FROM AUTHOR]

Pneumatic de-icing technology has the advantages of low energy consumption and high reliability. It is widely used in small commercial aircraft as well as general aviation aircraft. Investigating the impact of various parameters on the effectiveness of pneumatic de-icing is fundamental for the design and optimisation of pneumatic de-icing systems. It is found that the inflation time of 3 s and the inflation air pressure of 0.2 MPa are the best conditions for the airbag expansion through the measurement of the expansion height. Then, experimental platforms for pneumatic de-icing systems are established in ground cold environment and the icing wind tunnel. Experimental studies on the effect of different parameters on pneumatic de-icing are carried out. The test results show that the inflation time, inflation pressure, airbag width and icing temperature all have a certain degree of influence on the de-icing rate. The best pneumatic de-icing effect is achieved only when the airbag near the leading edge stationary point reaches a certain width. In addition, the de-icing effect of glaze ice is better than that of rime ice. [ABSTRACT FROM AUTHOR]

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