scholarly journals Cost Increments of Electricity Supply to Achieve Carbon Neutrality in China

2021 ◽  
Author(s):  
Zhenyu Zhuo ◽  
Ershun Du ◽  
Ning Zhang ◽  
Chris Nielsen ◽  
Xi Lu ◽  
...  
Keyword(s):  
Power System ◽  
Chinese Government ◽  
Electricity Supply ◽  
Carbon Neutrality ◽  
Development Goals ◽  
Precipitous Decline ◽  
Expansion Model ◽  
Supply Costs ◽  
The Cost ◽  
Flexible Generation

Abstract The Chinese government has set long-term carbon neutrality and renewable energy (RE) development goals for the power sector. Despite a precipitous decline in the costs of RE technologies, the external costs of renewable intermittency and the massive investments in new RE capacities needed to achieve carbon neutrality would drive electricity costs up. Here, we develop a power system expansion model to comprehensively evaluate changes in the costs of electricity supply over a 30-year transition to carbon neutrality, including the effects on the costs of various factors. RE supply curves across China, operating security constraints, and characteristics of various generation units are modelled in detail to assess the cost variations as accurately as possible. According to our results, approximately 5.5 TW of wind and solar photovoltaic capacities would be required to achieve carbon neutrality in the power system by 2050. The electricity supply costs would increase 21.5%, or 10.4 CNY¢/kWh (1.51 USD¢/kWh), which equates to a rise in the effective marginal price of carbon to 1082.6 CNY/t (157.0 USD/t) in 2050. The major cost increments would result from substantial investments in the new RE capacities, flexible generation resources, and network expansion that would be required to achieve carbon neutrality.

Enhancing grid flexibility under scenarios of a renewable-dominant power system in China

2021 ◽  
Author(s):  
Jiang Lin ◽  
Nikit Abhyankar ◽  
Gang He ◽  
Xu Liu ◽  
Shengfei Yin
Keyword(s):  
Quantitative Analysis ◽  
Power System ◽  
Power Plants ◽  
Power Cost ◽  
Carbon Neutrality ◽  
Coal Power Plants ◽  
Coal Power ◽  
Expansion Model ◽  
Flexibility Options ◽  
Flexible Operation

Abstract Renewable energy is poised to play a major role in achieving China's carbon neutrality goal by 2060; however, reliability and flexibility are a big concern of a renewable-dominant power system. Various strategies of enhancing flexibility are under discussion to ensure the reliability of such a system, but no detailed quantitative analysis has been reported yet in China. Here we combine the advantages of a capacity expansion model, SWITCH-China, with a production simulation model, PLEXOS, and analyze flexibility options under different scenarios of a renewable-dominant power system in China. We find that a larger balancing area offers direct flexibility benefits. Regional balancing could reduce the renewable curtailment rate by 5%-7%, compared with a provincial balancing strategy. National balancing could further reduce the power cost by about 16%. However, retrofitting coal power plants for flexible operation would only improve the system flexibility marginally.

Is it worth doing fieldwork with this organisation? A method for considering context before conducting fieldwork research in Sport for development and peace.

2020 ◽  
Author(s):  
Tegwen Gadais ◽  
Laurie Décarpentrie ◽  
Andrew Webb ◽  
Marie Belle Ayoub ◽  
Mariann Bardocz-Bencsik ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Research Method ◽  
Sustainable Development Goals ◽  
Field Work ◽  
Limited Resources ◽  
Limited Time ◽  
Sport For Development ◽  
Development Goals ◽  
The Cost ◽  
Existing Data

Much has been written about sport as a tool for development and peace. But more research on Sport for Development and Peace (SDP) organizations, is needed to better understand their actual contributions to the UNs sustainable development goals. Yet, the unstable, risky, and restricted contexts in which many NGOs and SDP agencies operate often leaves researchers struggling to find effective yet feasible methods through which to examine agencies in these fields. Indeed, conducting field work on and with SDP agency often implies allocating significant quantities of researcher’s limited time, funding, and other vital resources. And as limited resources need to be invested wisely, SDP researchers will clearly need to prepare their fieldwork. Nevertheless, there are but a handful of methodological papers that address the question of how to prepare for SDP field work. In other words, the question of how we know if it is worthwhile, and safe enough, to proceed with SDP field work remains. Building on previous research, the purpose of this study is to raise important ontological and epistemological questions about what can be known about a given context, before setting off on fieldwork. We further explore the use of the Actantial Model as a research method for analyzing existing data before deciding whether to conduct fieldwork in complex and frequently insecure situations. In other words, will the cost (material, temporal, financial, and physical) of conducting fieldwork be worth it? By applying the Actantial Model, with the specific aim of informing decisions regarding subsequent fieldwork, to one specific case, contributions regarding the pertinence of conducting fieldwork are provided.

A Harmonic Source Location Method Based on PMU Measurements in Distribution Network

2015 ◽  
Vol 775 ◽  
pp. 409-414
Author(s):  
Bing Jun Li ◽  
Su Quan Zhou ◽  
Xiao Xiang Lun
Keyword(s):  
Power System ◽  
State Estimation ◽  
Distribution Network ◽  
Measured Data ◽  
Optimal Measurement ◽  
Location Method ◽  
Measurement Placement ◽  
Minimum Number ◽  
Harmonic Source ◽  
The Cost

It is of great importance to identify the location of the harmonic sources for the harmonic governance in the power system. Applied with optimal measurement placement (OMP) and harmonic state estimation (HSE), this paper presents a novel process based on PMU measurements to locate the harmonic sources in the distribution network. Considering the cost and the observability, the OMP can provide a scheme of the measurement placement with the minimum number of PMU measurements. In order to simplify the HSE equation, the measured data are converted to the form of voltage by the method proposed in this paper.By solving the HSE equation, the location and magnitude of the harmonic source are evaluated. The methodology is applied to the IEEE 33-bus system, and the obtained results are properly analyzed.

scholarly journals Fast 10-Point DFT Algorithm for Power System Harmonic Analysis

2021 ◽  
Vol 11 (15) ◽  
pp. 7007
Author(s):  
Janusz P. Paplinski ◽  
Aleksandr Cariow
Keyword(s):  
Computational Complexity ◽  
Power System ◽  
Harmonic Analysis ◽  
Efficient Algorithm ◽  
System Analysis ◽  
Spectral Leakage ◽  
Power System Analysis ◽  
Improve Accuracy ◽  
The Cost ◽  
Harmonic Power

This article presents an efficient algorithm for computing a 10-point DFT. The proposed algorithm reduces the number of multiplications at the cost of a slight increase in the number of additions in comparison with the known algorithms. Using a 10-point DFT for harmonic power system analysis can improve accuracy and reduce errors caused by spectral leakage. This paper compares the computational complexity for an L×10M-point DFT with a 2M-point DFT.

Price structures for electricity supply and potential consequences for building services systems

2021 ◽  
pp. 014362442199081
Author(s):  
Roger Hitchin
Keyword(s):  
Cost Effective ◽  
Building Design ◽  
Electricity Supply ◽  
Cooling Systems ◽  
Price Structure ◽  
Heating And Cooling ◽  
Future System ◽  
The Cost ◽  
Supply Systems ◽  
Effective Design

Policies to reduce carbon emissions are leading to substantial changes in the demand for electricity and to the structure of electricity supply systems, which will alter the cost structure of electricity supply. This can be expected to result in corresponding changes to the price structure faced by customers. This note is an initial exploration of how possible new price structures may impact on HVAC system and building design and use. Changes in the price structure of electricity supply (separately from changes in price levels) can significantly affect the cost-effective design and operation of building services systems; especially of heating and cooling systems. The nature and implications of these changes can have important implications for future system design and operation.

Consumers’ WTP for certified traceable tea in China

2015 ◽  
Vol 117 (5) ◽  
pp. 1440-1452 ◽  
Author(s):  
Xiaolin Liu ◽  
Lingling Xu ◽  
Dian Zhu ◽  
Linhai Wu
Keyword(s):  
Developed Countries ◽  
Price Premium ◽  
Chinese Government ◽  
Payment Card ◽  
Content Type ◽  
Traceability System ◽  
Consumer Organizations ◽  
The Government ◽  
Premium Income ◽  
The Cost

Purpose – The purpose of this paper is to examine consumer attitudes toward and willingness to pay (WTP) for traceability of tea in China. Design/methodology/approach – The authors used the payment card method to elicit WTP for certified traceable tea and logistic regression model to analyze the factors that affected consumers’ WTP. Findings – The results revealed that most consumers in China were concerned over tea safety; however, their WTP for certified traceable tea was limited. Only income and the degree of concern over tea safety affected the consumer’s WTP for certified traceable tea greatly. When it came to consumers’ WTP a positive price premium, income level, education, and attitude toward traceability of tea significantly influenced the actual premium consumers were willing to pay. Practical implications – The Chinese government and tea producers should pay attention when implementing tea traceability system. First, raising the consumers’ income contributes to the premiums that consumers are willing to pay for certified traceable tea. Second, social groups, consumer organizations and tea producers should popularize knowledge of tea traceability. Third, given the low price premiums that consumers are willing to pay, the establishment of viable traceability of tea in China requires the producers and the government to bear some of the cost associated with the implementation of this system. Originality/value – In past studies on WTP for certified traceable food, the study is focussed on meat in developed countries, and the research has expanded range of study, by conducting a survey in China to determine consumers’ WTP for certified traceable tea, and by empirically examining the main factors that influence the willingness of consumers to pay a price premium for certified traceable tea, as well as the premium that these consumers are willing to pay.

Cost-utilization of peripheral intravenous cannulation in hospitalized adults: An observational study

2020 ◽  
Vol 21 (5) ◽  
pp. 687-693 ◽  
Author(s):  
Fredericus HJ van Loon ◽  
Tina Leggett ◽  
Arthur RA Bouwman ◽  
Angelique TM Dierick-van Daele
Keyword(s):  
Catheter Insertion ◽  
International Standards ◽  
Personnel Costs ◽  
Peripheral Intravenous Catheter ◽  
Nurses And Physicians ◽  
Supply Costs ◽  
Cost Utilization ◽  
The Cost ◽  
Hospital Protocols ◽  
Mean Time

Aim: In modern healthcare there is increased focus on optimizing efficiency for every treatment or performed procedure, of which reduction of costs is an important part. With this study, authors aimed to calculate the cost of peripheral intravenous cannulation including all components that influence its price. Methods: This observational cost-utilization study was conducted between May and October 2016. Hospitalized adults were included in this study, who received usual care. Peripheral intravenous cannulation was carried out according to current hospital protocols, based on international standards for peripheral intravenous catheter insertion. Device costs were assumed equal to the number of attempts multiplied by the fixed supply costs and applicable costs for additional attempts, whereas personnel costs for both nurses and physicians were based on their hourly salary. Results: A total of 1512 patients were included in this study, with a mean of 1.37 (±0.77) attempts and a mean time of 3.5 (±2.7) min were needed for a successful catheter insertion. Adjusted mean costs for peripheral intravenous cannulation were estimated to be €11.67 for each patient, but costs increase as the number of attempts for successful cannulation increases. The cost for patients with a successful first attempt was lower, at approximately €9.32 but increased markedly to €65.34 when five attempts were needed. Conclusion: Prevention of multiple attempts may lower the costs, and furthermore, additional technologies applied by nurses to individual patients based on predicted difficult intravenous access will make the application of these additional technologies, in turn, more efficient.

PERANAN DANA PERIMBANGAN DALAM PEMBIAYAAN PENYELENGGARAAN PEMERINTAHAN DAERAH DI KABUPATEN BANYUMAS

Authentica ◽  
2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Haedah Faradz
Keyword(s):  
Research Method ◽  
Regional Government ◽  
Conceptual Approach ◽  
West Java ◽  
Regional Office ◽  
State Finance ◽  
Directorate General ◽  
Development Goals ◽  
The Cost

Tax as a source of income for state finance is a manifestation of the community's direct contribution to development goals. The Regional Government of Banyumas Regency on September 10, 2004 proposed the Acquisition of Non-Taxable Tax Objects to the Minister of Finance and based on the Decree of the Head of Regional Office of the Directorate General of Taxation of West Java dated Dec-ember 23, 2004, Kep 14 /WPJ 10/BD05/2004 determine the amount of the acquisition value of non-taxable objects in Banyumas Regency. The problem examined in this paper is The Role of Balancing Funds originating from the Fees for Acquiring Land and Building Rights in financing the administration of regional government in Banyumas Regency; and Factors that influence the receipt of balance funds from the Land and Building Rights Acquisition Fees in Banyumas Regency. The research method used was normative juridical, namely statue approach and conceptual approach then analyzed qualitatively. The cost of acquiring land and building rights (BPHTB) in financing the administration of regional government in Banyumas Regency was still relatively small, and its implementation was also influenced by several factors. Keywords: tax, Customs for Land and Building Rights, locally-generated revenue.

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