scholarly journals Research and Development of an Analysis System of Frequency Modulation Performance of Anhui Power Grid Unit

2018 ◽  
Vol 08 (02) ◽  
pp. 190-196
Author(s):  
肖 梁
Keyword(s):  
Research And Development ◽  
Frequency Modulation ◽  
Power Grid ◽  
Grid Unit ◽  
Analysis System

scholarly journals Design and Application of a Case Analysis System for Handling Power Grid Operational Accidents Based on Case-Based Reasoning

Information ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 91
Author(s):  
Xiaopeng Yu ◽  
Changqing Xu ◽  
Dan Lu ◽  
Zeyu Zhu ◽  
Zhipeng Zhou ◽  
...  
Keyword(s):  
Safety Management ◽  
Power Grid ◽  
Power Grids ◽  
Case Based Reasoning ◽  
Matching Process ◽  
Grid Database ◽  
Analysis System ◽  
Safety Operation ◽  
Accident Case ◽  
Case Based

In recent years, power grid accidents have occurred frequently and higher requirements have been placed on their safety operation. In current safety management in the world, there is an effective practice that uses a unified standard for structuring an accident case database and based on that database, conducts quantitative analysis to cope with accident risks. However, that is not the case for power safety management. Case-based reasoning (CBR) is such a process that solves new problems based on the solutions to similar past problems. It works by matching a current problem with historical cases and solutions in a database, in order to obtain similar case solutions or inspirations. In the matching process, if necessary, such past solutions may be modified in order to better adapt to the current actual problems. Based on the CBR method, this paper proposes how to construct a case database of power grid operational accidents, provide data support for management of power grid risks and provide knowledge services for accurate grasping of grid accident development dynamics and making quick decisions to rapidly response to the emergencies. First, it designs an operational accident case database after considering the following three aspects: case features, power grid features and accident features based on safety management theory. Secondly, in terms of how to use the power grid operational accident case database, it proposed a two-level search strategy, as well as the corresponding similarity calculation methods for different feature attributes of the case. Finally, it carried out a demonstration to verify the model by selecting four typical grid accidents. The grid database and CBR strategy proposed in this article could help China’s power grids practice intelligent analysis of grid operational accidents and improve digitalization in safety management.

Research on the Supplementary Analysis System Based on CPS Standard

2012 ◽  
Vol 503-504 ◽  
pp. 1605-1608
Author(s):  
Hua Ting Tao ◽  
Li Li Ji
Keyword(s):  
Frequency Control ◽  
Power Grid ◽  
Influence Factors ◽  
Power Grids ◽  
Performance Standard ◽  
Control Performance ◽  
Control Performance Standard ◽  
Pros And Cons ◽  
Analysis System ◽  
Main Influence

CPS test standard has put forward new demands to the management of power grids. This paper analyzes the main influence factors of CPS, and introduces the way of building data warehouse and constructing supplementary analysis system on this basis, which can effectively help power grid workers to research the pros and cons in dispatch and operation. The application of the supplementary analysis system is helpful for Shanghai power grid to enhance AGC control and frequency control ability under the control performance standard.

scholarly journals Adaptive Droop Coefficient and SOC Equalization-Based Primary Frequency Modulation Control Strategy of Energy Storage

Electronics ◽  
2021 ◽  
Vol 10 (21) ◽  
pp. 2645
Author(s):  
Gaojun Meng ◽  
Yang Lu ◽  
Haitao Liu ◽  
Yuan Ye ◽  
Yukun Sun ◽  
...  
Keyword(s):  
Energy Storage ◽  
Frequency Modulation ◽  
Control Strategy ◽  
Simulation Analysis ◽  
Power Grid ◽  
Frequency Regulation ◽  
Storage Battery ◽  
Load Disturbance ◽  
Modulation Control ◽  
Primary Frequency

In order to efficiently use energy storage resources while meeting the power grid primary frequency modulation requirements, an adaptive droop coefficient and SOC balance-based primary frequency modulation control strategy for energy storage is proposed. Taking the SOC of energy storage battery as the control quantity, the depth of energy storage output is adaptively adjusted to prevent the saturation or exhaustion of energy storage SOC. The balanced control strategy is introduced to realize the rational utilization of resources and the fast balance of SOC in the process of primary frequency modulation of energy storage battery under different charge states. Then, four evaluation indexes are proposed to evaluate the effect of primary frequency modulation and SOC maintenance. Taking a regional power grid as an example, a simulation analysis is carried out under step load disturbance and continuous load disturbance. According to the simulation results, the proposed control strategy is effective in power system frequency regulation and battery SOC maintenance.

scholarly journals Research on Economic Activity Analysis System of Power Grid Enterprises Based on DuPont Model

2019 ◽  
Vol 242 ◽  
pp. 022012
Author(s):  
Jinglong Zhou ◽  
Changzhan Han ◽  
Yongli Wang ◽  
Fuli Zhang ◽  
Xiangming Wu ◽  
...  
Keyword(s):  
Economic Activity ◽  
Power Grid ◽  
Activity Analysis ◽  
Analysis System

VIRTUAL LEARNING CHALLENGES DURING COVID-19 PANDEMIC LOCKDOWN

2021 ◽  
Vol 12 (1) ◽  
pp. 70-81
Author(s):  
S. Karthikeyan ◽  
Keyword(s):  
Research And Development ◽  
Sample Size ◽  
Representative Sample ◽  
Engineering Students ◽  
Power Grid ◽  
Web Survey ◽  
Learning Challenges ◽  
College Staff ◽  
Teaching Learning ◽  
Initial Results

As a result of the pandemic lockdown, most college, Staff, and students in Nigerian universities were unable to find out online due to irregular power and internet unavailability. As a serious concern to the Nigerian Deans of Engineering, a study was commissioned by the Deans to spot the extent of the matter with a view to identifying the research and development areas and proffer an indigenous solution to the issues identified. This paper discusses the results of a web survey administered during the lockdown to a representative sample size from the over 80,000 engineering students’ population in Nigeria. The initial results showed that there's got to develop some sort of a price effective but modular and mobile integrated boosted internet ready power grid suitable for teaching, learning and research which is always-on both day and night for learning.

Sign in / Sign up

Export Citation Format

Share Document