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Demand response based congestion management in a mix of pool and bilateral electricity market model

Ashwani KUMAR, Charan SEKHAR

《能源前沿（英文）》 2012年第6卷第2期页码 164-178 doi: 10.1007/s11708-012-0187-9

摘要： The independent system operator (ISO) is a key element in the deregulated structure with one of the responsibilities of transmission congestion management (CM). The ISO opts market based solutions to manage congestion receiving bids from generation companies (GENCOs) as well as distribution companies (DISCOMs) to reschedule their generation and relocate demand. The nodal prices increases during the congestion hours and the demand response to nodal prices will be an effective tool for the control of congestion. In this paper, demand response-based CM has been proposed for a mix of pool and bilateral electricity market model. The linear bid curves have been considered for demand bids to respond to the congestion in the network. The bilateral demand has been obtained with minimum deviations in their preferred schedule. The impact of flexible alternating current transmission system (FACTS) devices viz static var compensator (SVC) and thyristor controlled series compensator (TCSC) has also been considered for demand management during congestion. Multi-line congestion cases have been considered to study the impact on demand response without and with FACTS devices. The proposed approach has been tested on the IEEE 24 bus test system.

关键词： bid function congestion management (CM) demand response pool+bilateral electricity market static var compensator (SVC) thyristor controlled series compensator (TCSC)

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An approach to locational marginal price based zonal congestion management in deregulated electricitymarket

Md SARWAR,Anwar Shahzad SIDDIQUI

《能源前沿（英文）》 2016年第10卷第2期页码 240-248 doi: 10.1007/s11708-016-0404-z

摘要： Congestion of transmission line is a vital issue and its management pose a technical challenge in power system deregulation. Congestion occurs in deregulated electricity market when transmission capacity is not sufficient to simultaneously accommodate all constraints of power transmission through a line. Therefore, to manage congestion, a locational marginal price (LMP) based zonal congestion management approach in a deregulated electricity market has been proposed in this paper. As LMP is an economic indicator and its difference between two buses across a transmission line provides the measure of the degree of congestion, therefore, it is efficiently and reliably used in deregulated electricity market for congestion management. This paper utilizes the difference of LMP across a transmission line to categorize various congestion zones in the system. After the identification of congestion zones, distributed generation is optimally placed in most congestion sensitive zones using LMP difference in order to manage congestion. The performance of the proposed methodology has been tested on the IEEE 14-bus system and IEEE 57-bus system.

关键词： locational marginal price (LMP) distributed generation pool market deregulated electricity market congestion management

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Low-carbon technology calls for comprehensive electricity-market redesign

Yang YU

《工程管理前沿（英文）》 2019年第6卷第1期页码 128-130 doi: 10.1007/s42524-019-0020-9

摘要：

The energy transition also calls for electricity- market redesign. Low-carbon technologies will fundamentally reshape the electricity sector. The electricity generation and demand will be significantly unpredictable and uncontrollable thus require for a more sophisticated system operation to guarantee the grid stability and reliability. The higher difficulty induced by the green-technology penetration expose the electricity-market to a higher market-failure risk. Thus, the future low-carbon electricity-market and associated regulation scheme require a comprehensive new design.

关键词： low-carbon technology electricity-system operation market design

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Impact of FACTS devices on exercising market power in deregulated electricity market

Shanmugam PRABHAKAR KARTHIKEYAN, I. JACOB RAGLEND, D. P. KOTHARI

《能源前沿（英文）》 2013年第7卷第4期页码 448-455 doi: 10.1007/s11708-013-0262-x

摘要： In power system studies, congestion in transmission lines and utilization of flexible alternating current transmission system (FACTS) devices are closely associated. These devices are very important due to their role in power delivery system enhancement. It is to be noted that the generation companies can exercise their market power which depends on the line flows, line constraints, generators’ location and its share to the individual loads. This issue cannot be overlooked as it creates monopoliness which is against the deregulated market policy. The objective of this paper is to study the impact of market power when FACTS devices like thyristor controlled switching capacitor (TCSC) and thyristor controlled phase angle regulator (TCPAR) are used under steady state operation. The market power is determined using nodal must-run share (NMRS) index for the standard IEEE 14-bus system with and without the above FACTS devices and the results obtained are compared. All the above simulations are conducted in a MATLAB 7.9-R2009b environment.

关键词： flexible alternating current transmission system (FACTS) thyristor controlled switching capacitor (TCSC) thyristor controlled phase angle regulator (TCPAR) market power must-run generation (MRG) nodal must-run share (NMRS)

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面向高比例可再生能源消纳的电力市场建设及研究进展

成润婷,张勇军,李立浧,丁茂生,邓文扬,陈皓勇,林靖淳

《中国工程科学》 2023年第25卷第2期页码 89-99 doi: 10.15302/J-SSCAE-2023.02.011

摘要：

完善的电力市场可在电力资源配置方面发挥决定性作用，是保证各类市场主体开展活跃的供需互动、促进可再生能源消纳的关键机制；针对性开展电力市场中影响可再生能源消纳因素的综合性分析，也是相关应用研究亟需。本文重点考虑全时间尺度下促进可再生能源消纳相关的交易机制，概述了国外典型电力市场结构及运行情况，梳理了相应电力市场结构及机制中促进可再生能源消纳的关键影响因素；围绕可再生能源消纳的多维关键影响因素，深入分析了我国各类市场结构和不同机制的建设现状，归纳出促进可再生能源消纳电力市场建设面临的挑战。从电力市场与碳市场、绿证市场耦合机制，可再生能源参与的中长期、现货交易及其衔接机制，面向高比例可再生能源的辅助服务市场，面向高比例可再生能源消纳的需求侧响应机制等方面，梳理了我国相关电力市场的学术研究进展。研究建议，实施多市场协同运作、中长期及现货交易衔接、辅助服务市场建设、需求响应机制建设等重点举措，支持面向高比例可再生能源消纳的电力市场建设。

关键词：可再生能源消纳；绿证市场；碳市场；辅助服务市场；需求侧响应

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Haloacetic acids in swimming pool and spa water in the United States and China

Xiaomao WANG,Garcia Leal M I,Xiaolu ZHANG,Hongwei YANG,Yuefeng XIE

《环境科学与工程前沿（英文）》 2014年第8卷第6期页码 820-824 doi: 10.1007/s11783-014-0712-7

摘要： The objective of this study is to investigate the occurrence of haloacetic acids (HAAs), a group of disinfection byproducts, in swimming pool and spa water. The samples were collected from six indoor pools, six outdoor pools and three spas in Pennsylvania, the United States, and from five outdoor pools and nine indoor pools in Beijing, China. Five HAAs (HAA5), including monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid were analyzed. Total chlorine, pH and total organic carbon concentration were analyzed as well. Results indicated that the levels of HAA5 in swimming pools and spas in the United States ranged from 70 to 3980 μg·L , with an arithmetic average at 1440 μg·L and a median level at 1150 μg·L . These levels are much higher than the levels reported in chlorinated drinking water and are likely due to organic matters released from swimmers’ bodies. The levels of HAA5 in swimming pools in China ranged from 13 to 332 μg·L , with an arithmetic average at 117 μg·L and a median level at 114 μg·L . The lower HAA levels in swimming pools in China were due to the lower chlorine residuals. Results from this study can help water professionals to better understand the formation and stability of HAAs in chlorinated water and assess risks associated with exposures to HAAs in swimming pools and spas.

关键词： chlorination disinfection byproduct haloacetic acid swimming pool trihalomethane

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A hybrid fuel cell for water purification and simultaneously electricity generation

《环境科学与工程前沿（英文）》 2023年第17卷第1期 doi: 10.1007/s11783-023-1611-6

摘要：

● A novel hybrid fuel cell (F-HFC) was fabricated.

关键词： Flow-through field Hybrid fuel cell Polyoxometalates Water purification Electricity generation

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端对端能源交易现状分析与展望 Review

周越, 吴建中, 龙超, 明文龙

《工程（英文）》 2020年第6卷第7期页码 739-753 doi: 10.1016/j.eng.2020.06.002

摘要：

作为有望解决人类社会“能源三元悖论”的一种重要手段，端对端能源交易（peer-to-peer energy trading）在近年涌现并快速发展。在端对端能源交易中，分布式能源（distributed energy resource, DER）直接互相进行能源的交易和共享。基于对相关学术论文、研究项目和工程实践的综合调研，本文总结并分析了端对端能源交易的全球发展现状，讨论了端对端能源交易的5个主要方面，包括市场机制设计、交易平台、物理和信息通信基础设施、社会科学视角以及政策法规；针对每个方面，对现有相关研究和实践均进行了批判性分析，并就未来的发展方向做出了展望；文末对主要发现和展望做了系统性总结。端对端能源交易是一个快速发展的领域，为全球的学术界和工业界提供了巨大的潜力和机会。

关键词：端对端能源交易分布式能源本地能源市场区块链能源政策

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Lessons from market reform for renewable integration in the European Union

Furong LI

《能源前沿（英文）》 2018年第12卷第4期页码 623-629 doi: 10.1007/s11708-018-0575-x

摘要：

The European Union (EU) has the most advanced, mature, and liberal energy markets that gave rise to the most dramatic drop in wholesale energy prices, whose fallen, however, has not been translated into a reduction in retail energy prices. Instead, energy prices in Europe rose above inflation year-in-year-out, and are considerably higher compared with major economic partners. This paper highlights the key limitations in the EU market designs and network access toward renewable integration, and the wide range of reforms that the EU is currently undertaken across the Member States to achieve two goals: to make the market fit for renewable, and to set a practical example of how a competitive economy can be built on a sustainable and affordable energy system. This paper concludes with key recommendations to developing nations, particularly in addressing heavy renewable curtailment.

关键词： wholesale energy market retail energy market market for renewables

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Unlocked disinfection by-product formation potential upon exposure of swimming pool water to additional

Alvyn P. Berg, Ting-An Fang, Hao L. Tang

《环境科学与工程前沿（英文）》 2019年第13卷第1期 doi: 10.1007/s11783-019-1098-3

摘要：

• Swimming pool water was studied for DBPs upon exposure to additional stimulants.

• DBP formation could be induced by residual chlorine and extended incubation.

• Urine led to a massive formation of chloroform with additional stimulants.

• Reactions between chlorine and anthropogenic organics were slow and long-lasting.

• Urine control and air ventilation should be on the priority list for pool management.

关键词： Trihalomethanes Haloacetic acids Chloroform Residual chlorine Anthropogenic organics Swimming pool water

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Numerical investigation on the dryout point of annular flow in the upward narrow annuli with bilateral

SU Guanghui, QIU Suizheng, DUAN Feng, XIAO Zejun, HUANG Yanping

《能源前沿（英文）》 2007年第1卷第3期页码 264-272 doi: 10.1007/s11708-007-0037-3

摘要： Based on the fundamental conservation principles—the mass, momentum, and energy conservation equtions of liquid films and the momentum conservation equation of vapor core, a theoretical three-fluid model has been developed to predict the dryout point of upward annular flow in vertical narrow annuli with bilateral heating. The range of the parameters are: pressure from 0.5 to 5.0 MPa; mass flow rate from 30 to 150 kg/(m · s); gap size from 1.2 to 2.0 mm. Through numerically solving the model, the relationships among the parameters of the critical quality (), critical heat flux (), mass flow rate, system pressure, and the ratio of heat flux on the inner wall of the outer tube to that on the outer wall of the inner tube (/) are obtained and analyzed. The predicted results accurately match with the experimental data. For a fixed , will increase with the decreases in the gap size and the tube curvature when the dryout point occurs on the outer wall of the inner tube. However, for a fixed , when the dryout point occurs on the inner wall of the outer tube, the parametric trend is reverse. When the dryout point on the inner and outer walls occurs simultaneously, reaches a peak value, and the ratio of / at this position changes with the gap size and the tube curvature.

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Relationship between electricity consumption and economic growth of Guangdong Province in China

Lianhong LV, Hong LUO, Baoliu ZHANG

《能源前沿（英文）》 2012年第6卷第4期页码 351-355 doi: 10.1007/s11708-012-0209-7

摘要： Guangdong is a province with the most electricity consumption (EC) and the fastest economic growth in China. However, there has long been a contradiction between electricity supply and demand in Guangdong and this trend may exist for a long time in the foreseeable future. Therefore, the research on the relationship between EC and economic growth of Guangdong is of very important practical significance to the formulation of relevant policy. In this paper, the econometrics method of granger causality test and co-integration test is used to analyze the relationship between EC and economic growth of Guangdong from 1978 to 2010. The results indicate that there is unidirectional causality between the economic growth and the EC, and the growth of gross domestic product (GDP) and gross industrial output value (GIOV) is the impetus to promote the growth of installedβcapacity (ICAP) and the EC. Therefore, the appropriate restraint of excessive growth of power industry will not necessarily slow down economic growth. There has been a long-term stable equilibrium relationship between the EC and the economic growth. When the GDP and GIOV grows 1 unit respectively, the EC of Guangdong province will increase 0.97 and 0.64 unit respectively. The long-term marginal utility of the EC is more than 1.

关键词： co-integration granger causality electricity consumption (EC) economic growth

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A global carbon market?

Michael G. POLLITT

《工程管理前沿（英文）》 2019年第6卷第1期页码 5-18 doi: 10.1007/s42524-019-0011-x

摘要：

This paper explores the prospects for a global carbon market as the centerpiece of any serious attempt to reach the ambitious goal for greenhouse gas (GHG) reductions set by climate scientists. My aim is to clarify the extent to which we know what policy might best support global decarbonisation. We begin by discussing what we might mean by a global carbon market and its theoretical properties. We then go on to discuss the EU Emissions Trading System experience and the recent experience with the Australian carbon tax. Next, we assess recent carbon market initiatives in the US and in China. My argument is that while establishing the amount of emissions required and dividing it up acceptably between countries requires an enormous scientific and international negotiations effort, the economic instruments to deliver the agreed targets are readily at hand.

关键词： carbon market carbon tax EU ETS

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Prevention of laryngeal webs through endoscopic keel placement for bilateral vocal cord lesions

null

《医学前沿（英文）》 2018年第12卷第3期页码 301-306 doi: 10.1007/s11684-017-0549-0

摘要：

Transoral microresection for treatment of vocal cord lesions involving the anterior commissure may result in anterior glottic webs. In this study, we retrospectively reviewed 54 patients who underwent microsurgery for bilateral lesions involving the anterior commissure and categorized them into two groups. The keel placement and control groups received endoscopic keel placement and mitomycin C, respectively. During the follow-up of at least 1 year, the laryngeal web formation rate significantly decreased in the keel placement group compared with that in the control group (18.6% versus 54.5%, <0.05). Furthermore, the voice handicap index-10 scores for patients without web formation decreased in both the keel placement and control groups ( <0.0001 and <0.001, respectively). A pseudomembrane covering the vocal cords was detected in 16.3% (7 of 43) cases after keel removal. A total of 100% (7 of 7) of these cases and 2.8% (1 of 36) of the other cases formed laryngeal webs ( <0.0001). Endoscopic keel placement could be an effective method for preventing anterior glottic webs after surgery for bilateral vocal cord diseases involving the anterior commissure. The pseudomembrane observed at the time of keel removal may imply a high risk of web formation.

关键词： glottic stenosis glottic web laryngeal keel silastic sheets anterior commissure

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Decomposition and decoupling analysis of electricity consumption carbon emissions in China

《工程管理前沿（英文）》页码 486-498 doi: 10.1007/s42524-022-0215-3

摘要： Electricity consumption is one of the major contributors to greenhouse gas emissions. In this study, we build a power consumption carbon emission measurement model based on the operating margin factor. We use the decomposition and decoupling technology of logarithmic mean Divisia index method to quantify six effects (emission intensity, power generation structure, consumption electricity intensity, economic scale, population structure, and population scale) and comprehensively reflect the degree of dependence of electricity consumption carbon emissions on China’s economic development and population changes. Moreover, we utilize the decoupling model to analyze the decoupling state between carbon emissions and economic growth and identify corresponding energy efficiency policies. The results of this study provide a new perspective to understand carbon emission reduction potentials in the electricity use of China.

关键词： electricity consumption carbon emission measurement LMDI model decoupling model data driven