Building a low-carbon park is crucial for achieving the carbon neutrality goals.However,most research on low-carbon economic planning methods for park-level integrated energy systems(PIES)has focused on multi-energy f...Building a low-carbon park is crucial for achieving the carbon neutrality goals.However,most research on low-carbon economic planning methods for park-level integrated energy systems(PIES)has focused on multi-energy flow interactions,neglecting the“carbon perspective”and the impact of the dynamic coupling characteristics between multi-energy flows and carbon emission flow(CEF)on carbon reduction and planning schemes.Therefore,this paper proposes a two-layer low-carbon economic planning method for park-level integrated energy systems with carbon-energy synergistic hub(CESH).Firstly,this paper establishes a CESH model for PIES to describe the synergistic relationship between CEF and multi-energy flows from input,conversion,storage,to output.Secondly,a PIES two-layer low-carbon economic planning model with CESH is proposed.The upper model determines the optimal device types and capacities during the planning cycle.The lower model employs the CESH model to promote carbon energy friendly interactions,optimize the daily operation scheme of PIES.The iterative process between the two layers,initiated by a genetic algorithm(GA),ensures the speed and ac-curacy.Finally,case studies show that,compared to planning methods without the CESH model,the proposed method is effective in reducing carbon emissions and total costs during the planning cycle.From a dual“carbon-energy”perspective,it enhances investment effectiveness and carbon reduction sensitivity by deeply exploring the energy conservation and carbon reduction potential of PIES.展开更多
This study examines the impact of Economic Sustainability Plan (ESP) on the performance of the Nigerian economy as a national economic resilient policy in the post COVID-19 era within the framework of a macro-economet...This study examines the impact of Economic Sustainability Plan (ESP) on the performance of the Nigerian economy as a national economic resilient policy in the post COVID-19 era within the framework of a macro-econometric model. The study is hinged on the Keynesian general theory of employment, income and interest. Annual time series data spanning from 1970 to 2019 for within sample forecast, and a six-year out-of-sample forecast spanning from 2020 to 2025 were used. The policy scenario of 21.3 percent increase in government expenditure under the ESP as a stimulus package was simulated and the findings showed that increase in government expenditure under the ESP in critical areas would bring about significant impact on the macroeconomic performance of the Nigerian economy, especially on employment, inflation, economic growth and balance of payment in the post COVID-19 era. Emergent from these findings, the study recommended among others that the government should mobilize resources to finance the ESP in order to stimulate the economy in the post COVID-19 era by ensuring prudential fiscal management of resources;and the Central Bank of Nigeria (CBN) should ensure that financial institutions saddled with the responsibility of disbursement of intervention funds reduce interest rate from 9 percent to 5 percent as reflected in the ESP.展开更多
China had entered a period of moderate economic growtht one that is moving at an appropriate pace. China＇s economy is bottoming out and seeking a new balance,
The master plan for the city ofJiaojiang,worked out in 1983,has been prov-ed in correspondence with the reality ofJiaojiang through seven year’s practice.Play-ing an important role in guiding Jiaojiang’surban constr...The master plan for the city ofJiaojiang,worked out in 1983,has been prov-ed in correspondence with the reality ofJiaojiang through seven year’s practice.Play-ing an important role in guiding Jiaojiang’surban construction,the master plan helpedthe small town originally under the jurisdic-tion of county develop into a modern portcity with preliminary scale within merely sev-eral years.However,due to the changed so-展开更多
基金financially funded by the National Natural Science Foundation of China(Grant/Award Numbers:52177107 and 52222704).
文摘Building a low-carbon park is crucial for achieving the carbon neutrality goals.However,most research on low-carbon economic planning methods for park-level integrated energy systems(PIES)has focused on multi-energy flow interactions,neglecting the“carbon perspective”and the impact of the dynamic coupling characteristics between multi-energy flows and carbon emission flow(CEF)on carbon reduction and planning schemes.Therefore,this paper proposes a two-layer low-carbon economic planning method for park-level integrated energy systems with carbon-energy synergistic hub(CESH).Firstly,this paper establishes a CESH model for PIES to describe the synergistic relationship between CEF and multi-energy flows from input,conversion,storage,to output.Secondly,a PIES two-layer low-carbon economic planning model with CESH is proposed.The upper model determines the optimal device types and capacities during the planning cycle.The lower model employs the CESH model to promote carbon energy friendly interactions,optimize the daily operation scheme of PIES.The iterative process between the two layers,initiated by a genetic algorithm(GA),ensures the speed and ac-curacy.Finally,case studies show that,compared to planning methods without the CESH model,the proposed method is effective in reducing carbon emissions and total costs during the planning cycle.From a dual“carbon-energy”perspective,it enhances investment effectiveness and carbon reduction sensitivity by deeply exploring the energy conservation and carbon reduction potential of PIES.
文摘This study examines the impact of Economic Sustainability Plan (ESP) on the performance of the Nigerian economy as a national economic resilient policy in the post COVID-19 era within the framework of a macro-econometric model. The study is hinged on the Keynesian general theory of employment, income and interest. Annual time series data spanning from 1970 to 2019 for within sample forecast, and a six-year out-of-sample forecast spanning from 2020 to 2025 were used. The policy scenario of 21.3 percent increase in government expenditure under the ESP as a stimulus package was simulated and the findings showed that increase in government expenditure under the ESP in critical areas would bring about significant impact on the macroeconomic performance of the Nigerian economy, especially on employment, inflation, economic growth and balance of payment in the post COVID-19 era. Emergent from these findings, the study recommended among others that the government should mobilize resources to finance the ESP in order to stimulate the economy in the post COVID-19 era by ensuring prudential fiscal management of resources;and the Central Bank of Nigeria (CBN) should ensure that financial institutions saddled with the responsibility of disbursement of intervention funds reduce interest rate from 9 percent to 5 percent as reflected in the ESP.
文摘China had entered a period of moderate economic growtht one that is moving at an appropriate pace. China＇s economy is bottoming out and seeking a new balance,
文摘The master plan for the city ofJiaojiang,worked out in 1983,has been prov-ed in correspondence with the reality ofJiaojiang through seven year’s practice.Play-ing an important role in guiding Jiaojiang’surban construction,the master plan helpedthe small town originally under the jurisdic-tion of county develop into a modern portcity with preliminary scale within merely sev-eral years.However,due to the changed so-
