New Energy Research Articles

Capacity optimum distribution mode of various types of energy storage devices considering the improvement of active-supporting capability

Abstract Under the dual-carbon development goal, the energy storage (ES) demand on the new energy (NE) side has been upgraded from the scene of promoting absorb to the scene of promoting absorb and actively supporting the power grid. Therefore, this paper proposes a capacity optimum distribution mode (CODM) for various types of ES equipment considering the improvement of active-supporting capability. Firstly, a polytypic ES capacity optimum distribution method considering both NE absorb and active-supporting grid capacity improvement is proposed. Then, the solution process of the complex model is optimized by introducing the characteristic curve extraction method of typical working conditions. Finally, founded on the historical data of typical NE power stations, the ES configuration requirements and economy under the scenes of promoting absorb, promoting absorb and active-supporting are calculated. The comparison results show that compared with promoting absorb, the scenes of promoting absorb and active-supporting can better meet the ES requirements of the NE side technically and have a better economy.

Economic level, environmental regulation, and new energy industry development.

Using panel data of 30 provinces and new energy (NE)-listed enterprises in China from 2011 to 2020, this paper uses basic model to research the impact of various environmental policies in China on NE industry development firstly. Then, using economic level as a threshold variable, a threshold model was constructed to research the impact of economic level on the relationship between environmental regulation and NE industry development. The research results show that firstly, various environmental policies in China have significantly promoted the development of the NE industry. This is mainly manifested in two aspects. One is environmental regulations significantly increased the NE industry output value and profit, the other is environmental regulations enhanced the NE industry growth potential. Secondly, the regional economic level has a significant impact on the relationship between environmental regulations and NE industry development. The promotion effect of environmental regulations on NE industry development depends on the regional economic level. When the regional economic level exceeds the threshold, the promoting effect of environmental regulations on NE industry development significantly increases. The reason is that a weak economic foundation will affect investment in the NE industry. Insufficient capital investment will inevitably seriously hinder the development of the NE industry. Thirdly, residents' education status, financial support, and NE industry agglomeration degree have a positive impact on the development of the NE industry, while population size has no significant impact on NE industry development.

Assessment of New Energy Consumption Capacity of Grid Based on Edge Computing

Distributed photovoltaic grid integration brings many negative effects to the distribution network, and carrying out the research on its consumption capacity (CC) in the distribution network is the key to guarantee the safe and stable operation of the distribution network. This paper takes the maximum power access mode and minimum network loss as the optimization objectives, and takes voltage deviation, voltage fluctuation and short circuit capacity as the constraints to construct the evaluation model of distributed PV power generation CC. In view of the above problems, this paper uses edge computing to construct the evaluation of new energy (NE) CC of the grid, and applies it to the IEEE33 node network and the actual network. Finally, the established mathematical model and algorithm are validated (relative to Monte Carlo, the evaluation time of edge computing and time series production simulation is shorter, 13.11s and 23s, respectively).

Distributed new energy system access based on blockchain Consensus Algorithm

Abstract With the development of society, non-renewable energy such as oil and natural gas are gradually consumed and exhausted, and the energy crisis has become the biggest resistance to the development. Therefore, the development of New Energy (NE) has become an important issue for the Sustainable Development (SD) of modern society. Distributed NE system is the new direction of modern energy development. Therefore, higher requirements are put forward to improve the performance of distributed NE systems. The traditional NE system is relatively scattered and cannot be used intensively. There is no consensus among various NE systems, and the energy utilization is insufficient. It leads to a great waste of energy in the process of developing and using NE. The introduction of Blockchain Technology (BT) has contributed to solving many practical problems. BT can not only ensure the authenticity of data but also meet the requirements of high quality by taking advantage of its own characteristics of data tamperability and traceability mechanism. The Consensus Algorithm (hereinafter indicated by CA) in the blockchain ensures that the final results received by all participants are consistent and error-free through data synchronization, and distributed, consistency cooperation. The access of distributed NE solves the disadvantage that the traditional NE system cannot be used in a centralized way, to access NE more efficiently, conveniently, and quickly. In this paper, the distributed NE system was accessed based on the blockchain CA. By adopting BT and CA, a distributed NE system that was easy to access was established. The system could systematically deploy the existing developed NE and then make centralized use of it. This paper compares the efficiency, stability, and loss of access of the distributed NE system using the blockchain CA with that of the traditional distributed NE system. The results showed that the use of blockchain CA to access distributed NE could effectively utilize NE, and the efficiency of distributed NE access after using blockchain CA increased by about 28.8 %. At the same time, the experimental results showed that the access stability was high and the access loss was low. With the continuous development of NE, the blockchain CA would gradually become an important technical support in the energy field, thus promoting the overall development of the energy industry.

Evaluation on key technologies for the construction of low-carbon index of electric power based on “double carbon”

Abstract At a time when global climate change poses a major challenge to human survival and development, all countries believe that people must actively deal with green and low-carbon (LC) development. As one of the hot topics in recent years, the concepts of “carbon neutral” and “carbon peak” have a significant impact on the construction of New Energy (NE) systems. The construction of NE systems with NE as the main component is an important way to achieve the “double carbon” goal. Affected by the “double carbon” goal, the energy system has shifted to a low carbon and high intensity system, reducing the dependence on fossil fuel power generation, accelerating the use of clean energy, and promoting the supply system of low carbon and clean energy. In order to improve the LC construction of electric power, this article studied the key technologies of LC index construction of electric power under the background of “double carbon”. This article first introduced the LC construction of urban electric power, including the connotation of LC electric power, the current situation of NE development and the difficulties of LC construction of electric power in the context of “double carbon”. Then this article constructed a new type of LC Power System (PS) on the basis of double carbon, and introduced the framework of the system and the key technologies included in the system. Finally, this article verified the effectiveness of the new LC PS in LC construction through experiments, and put forward suggestions for the realization of LC power construction. The experiment showed that the new LC PS can greatly promote the construction of the LC index of power, and is conducive to the development of urban power. The proportion of urban non-fossil energy and the new installed capacity of non-fossil energy power generation have been significantly increased. Among the four cities studied in this article, the proportion of non-fossil energy in two cities has increased from less than 50 % to more than 50 %, which has greatly promoted the construction of LC index of electricity.

Application of Multimedia Quality Evaluation Relying on Intelligent Robot Numerical Control Technology in New Energy Power Generation System

New energy (NE) power generation technology has become an important means to solve the problems of global energy demand and environmental governance due to its sustainability and cleanliness. However, restricted by climate and other factors, the instability of its power generation capacity has a serious impact on the voltage multimedia quality evaluation of small microgrids, which even causes damage to important equipment. This paper proposed a multimedia quality evaluation method in the new energy power generation system relying on intelligent robot numerical control technology. According to the state characteristics of different units, the expanded representation models of conventional units, wind turbines, and photovoltaic units were established, respectively. Based on intelligent robot numerical control technology, a multimedia quality monitoring model of the new energy power generation system in random production simulation was established. The planned outage condition of the unit, which was ignored by the current stochastic simulation method, has been fully considered to ensure the rationality of the simulation of intelligent robot numerical control technology. The intelligent robot numerical control technology was used to explore the expected production power change of the unit and to improve the calculation speed and accuracy. In this paper, an appropriate wind and solar power generation model was constructed based on the output characteristics of wind and solar. Secondly, the influence of random faults between units on the subsequent loading rate was studied through probability calculation. The start-stop factors of conventional units were comprehensively analyzed. Then, the expected value of unit start-stop times was obtained. The average relative error of the expected value of the power shortage of the new energy electricity generation system (EGS) was 2.45%, and the error was lower than 2.98%. In the intelligent robot numerical control technology in this paper, the planned outage condition of the unit was considered, which showed the correctness and superiority of the multimedia quality evaluation of the proposed model.

New energy technology innovation and sustainable economic development in the complex scientific environment

Energy is the material basis of national development, which supports national economic development. With the sustained and rapid economic growth, the energy problem has become the bottleneck hindering sustainable economic and social development, and countries around the world are paying attention to its impact. The development and utilization of New Energy (NE) are inseparable from the support of technological innovation. Technological innovation is an important part of technological philosophy in technological philosophy and the embodiment of value theory. At the current stage of NE economic and ecological development, the contradiction of social values can be solved, because these contradictions can be solved through technological innovation” has been added to the article. To some extent, NE technologies are becoming a new basis for influencing the global pattern and human development. The research on the impact of technological innovation on energy is also helpful to study the impact of science and technology on society. Therefore, this paper studied the relationship between energy technology innovation and economic sustainability by analyzing the characteristics, elements, and challenges of NE technology innovation. Finally, the corresponding implementation strategy was optimized according to the current situation of the NE industry. The resource utilization rate, energy system perfection, and economic benefits after NE technology innovation in complex environment were higher than those before technology innovation. Among them, the resource utilization rate after NE technology innovation was 12.3% higher than that before NE technology innovation; the degree of energy system perfection after NE technology innovation was 9.4% higher than that before NE technology innovation; the economic benefit after NE technology innovation was 9.4% higher than that before NE technology innovation. In short, energy technology innovation was closely related to economic sustainability.

Adaptive Control Strategy of Multiemergency Power Supply Network System Connected to New Energy

In order to improve the adaptive control effect of the multiemergency power supply networking system connected to new energy (NE), this paper studies the adaptive control strategy (ACS) of the multiemergency power supply networking system connected to NE by combining intelligent algorithms and determines the appropriate installation node of the distributed power supply according to the voltage stability index. Moreover, this paper proposes a method to optimize the distribution network feeder reorganization and distributed power configuration problems based on the fireworks algorithm to reduce the network loss and improve the voltage distribution. In addition, distribution network reorganization and distributed power configuration optimization can more effectively minimize network losses and improve voltage distribution. Through the experimental research, it can be seen that the ACS of the multiemergency power supply network system connected to NE proposed in this paper has the established effect.

Planning of New Distribution Network Considering Green Power Certificate Trading and Carbon Emissions Trading

In order to adapt to the development of the green power certificate trading (GPCT) and carbon emissions trading (CET) market, reduce the carbon emissions of the distribution network and increase the investment income, this paper proposes a new distribution network (NDN) planning and simulation operation bi-layer model with new energy (NE) as the main body, considering the GPCT and CET mechanisms. First, the upper layer determines the capacity and location of wind turbine (WT), photovoltaic (PV), hydraulic turbine (HT), micro turbine (MT), and energy storage (ES), while the lower simulation operation considers the operation costs of WT, PV, HT, MT, ES, load demand response (DR) and carbon emissions. The planning objective was to minimize the total cost of investment, operation and carbon emissions in the planning period. Then, on the basis of a traditional distribution network (TDN), security constraints, carbon emissions intensity, GPCT volume and CET volume were added. Finally, the cases study of the improved IEEE33 node and PG&E69 node NDN planning were provided. The results of NDN planning and TDN planning are compared and analyzed, and a sensitivity analysis was carried out to study the impact of GPCT and CET mechanisms with different price levels on investment planning. The results verify the applicability and rationality of the model.

Does venture capital stimulate the innovation of China's new energy enterprises?

With a sample of the listed new energy (NE) enterprises in China (2010–2017), this paper investigates the impact of venture capital on NE enterprises innovation by applying the Propensity Score Matching (PSM) model and Poisson model. The results indicate that venture capital has a positive and significant impact on the innovation of NE enterprises, among which the innovation incentive effect of government participation and joint venture capital is more significant. Compared with non-government participation venture capital, single venture capital and non-local investment, government participation venture capital, joint venture capital and local investment are more conducive to promoting the increase of patent applications of NE enterprises. Besides, local investment conducted by government participation venture capital and joint venture capital have a more significant innovation incentive effect of NE enterprises. This paper not only reveals the impact of venture capital on the innovation of NE enterprises, but also provides the empirical basis for the government to adopt the market instrument to promote the development of NE industry.

Research status and development trend of PCS

Due to the shortage of conventional energy and serious environmental pollution, new energy (NE), such as wind energy, solar energy, biomass energy, etc. is getting more and more attention. However, the output power of NE is unstable. Energy storage is the most effective way to solve the problem of NE applications. The power conversion system (PCS) determines the output power quality and dynamic characteristics of the energy storage system. This paper reviews the development and application of PCS, conducts a detailed study of its working principle, topology, and key technologies. The main index system of PCS is established by consulting the relevant standards, and the requirements and detection methods of the main indexes are pointed out. This work provides a scientific basis for the selection of PCS. At the end of the paper, summarizes and prospects on PCS.

Analysis and Evaluation of Energy and Environmental Benefits of New Energy Vehicles

At present, China’s oil and natural gas external dependence is increasing, the energy security situation is increasingly grim, the automobile industry is an important reason for the rapid growth of crude oil consumption, the development of new energy automobile industry has become a global consensus. This paper aims to study the development strategy of China’s new energy(NE) vehicle industry through cost-benefit analysis, so as to provide reference for China’s NE vehicle demonstration and promotion vehicle selection and the next step of technology research and development, which has certain reference significance for China’s NE vehicle technology research and development and promotion. From a macro perspective, this paper firstly analyzes the problems existing in the industrialization process of NE vehicles in combination with the current development status of China’s NE vehicle industry. Secondly, the cost-benefit analysis theory is introduced into the strategy research of China’s NE vehicle industry, and the cost-benefit index of China’s NE vehicle development is identified and selected to construct the index system. Thirdly, the ahP is used to analyze the cost-benefit index and predict its development trend. Finally, according to the results of the previous analysis, the policy recommendations for the rational development of China’s NE vehicle industry are put forward, and the development priorities and tasks of China’s NE vehicles are clearly put forward.