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1. 西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
2. 西安交通大学陕西省智能电网重点实验室,西安,710049
3. 西安交通大学电气工程学院,西安,710049
Online First:10 July 2021,
Published:2021
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Probabilistic Risk Assessment of New Energy Power System in the Context of Energy Transition: a Review[J]. 2021, 55(7): 1-11.
Probabilistic Risk Assessment of New Energy Power System in the Context of Energy Transition: a Review[J]. 2021, 55(7): 1-11. DOI: 10.7652/xjtuxb202107001.
当前我国正处在能源转型的关键时期
在碳达峰和碳中和背景下
高比例新能源接入带来的不确定性使得确定性的风险评估已经无法保障电力系统的安全可靠运行。概率风险评估是评估高度不确定性系统风险的有效工具
其旨在突破确定性风险评估基于风险长期平均数字特征无法对高概率低损失和低概率高损失事件进行区分的局限。本文首先阐述了新能源电力系统概率风险评估的迫切性
然后对其进行了概述
包括概率风险评估的含义、应用现状以及新能源电力系统概率风险评估的特点
继而在风险评估研究现状的基础上
从风险建模、评估、分析和决策4个层面论述了新能源出力模型和故障模式、概率风险评估核心算法和计算效率、多层次概率指标体系和薄弱环节识别方法、运行方式安排和设备备用规划决策等方面的关键问题。未来亟需从新能源出力与负荷之间的时空相关性以及新能源的相依故障模式、概率风险全分布评估的算法和全面提高计算效率的方法、基于分割多目标风险分析理论建立面向不同风险类型的多层次指标及薄弱环节识别体系、在优化模型的目标函数或者约束条件中计及概率风险指标的决策方法等方向展开研究。
In the context of energy transition in China
the uncertainty from a high proportion of new energy has made the deterministic risk assessment unable to ensure safe and reliable operation of power system under the ‘carbon peaking and carbon neutral' background. Probabilistic risk assessment is an effective tool to evaluate the risk of high uncertainty system
which aims to break through the limitation that the deterministic risk assessment based on the long-term average numerical characteristics of risk cannot distinguish the events with high probability and low loss from those with low probability and high loss. Firstly
this paper expounds the urgency for probabilistic risk assessment of new energy power system(PRANEPS). Then
PRANEPS is summarized including the meaning
application status of probabilistic risk assessment and characteristics of PRANEPS. Further
on the basis of the research status of risk assessment
this paper discusses the key issues of PRANEPS from four aspects of risk modeling
risk assessment
risk analysis and risk decision
such as the output model and failure mode of new energy
the core algorithm and calculation efficiency of probabilistic risk assessment
the multi-level probability index system and weak part recognition method
the operation mode and equipment spare planning decision-making. In the future
it is urgent to study temporal and spatial correlation between new energy and load
as well as dependent failure mode of new energy
probabilistic risk full distribution algorithm and improved calculation efficiency method
multi-level index and weak part recognition system for different risk types based on partitioned multi-objective risk method(PMRM)
decision-making method considering probabilistic risk index in the objective function or constraint of optimization model.
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