Research on Grid Planning of Dual Power Distribution Network Based on Parallel Ant Colony Optimization Algorithm

A distribution network plays an extremely important role in the safe and efficient operation of a power grid.As the core part of a power grid’s operation,a distribution network will have a significant impact on the safety and reliability of residential electricity consumption.it is necessary to actively plan and modify the distribution network’s structure in the power grid,improve the quality of the distribution network,and optimize the planning of the distribution network,so that the network can be fully utilized to meet the needs of electricity consumption.In this paper,a distribution network grid planning algorithm based on the reliability of electricity consumption was completed using ant colony algorithm.For the distribution network structure planning of dual power sources,the parallel ant colony algorithm was used to prove that the premise of parallelism is the interactive process of ant colonies,and the dual power distribution network structure model is established based on the principle of the lowest cost.The artificial ants in the algorithm were compared with real ants in nature,and the basic steps and working principle of the ant colony optimization algorithm was studied with the help of the travelling salesman problem(TSP).Then,the limitations of the ant colony algorithm were analyzed,and an improvement strategy was proposed by using python for digital simulation.The results demonstrated the reliability of model-building and algorithm improvement.

Practice and Thinking on Current Planning Environmental Impact Assessment of Transmission and Transformation Power Grid in Jiangsu Province

The planning environmental impact assessment （EIA） of transmission and transformation power grid at levels of 500 and 220 kV had been finished completely in the 13 municipalities of Jiangsu Province by the end of 2012, which played important roles in guiding and planning the following transmission and transformation projects in environmental protection. In this paper, through the detail analysis on the objective and significance of the planning EIA of transmission and transformation power grid, legal basis and planning EIA practices, some suggestions and thinking about the planning EIA of transmission and transformation power grid were put forward.

Multi-stage power source and grid coordination planning method considering grid uniformity

Given the increasing uncertainties in power supply and load,this paper proposes the concept of power source and grid coordination uniformity planning.In this approach,the standard deviation of the transmission line load rate is considered as the uniformity evaluation index for power source and grid planning.A multi-stage and multi-objective optimization model of the power source and grid expansion planning is established to minimize the comprehensive cost of the entire planning cycle.In this study,the improved particle swarm optimization algorithm and genetic algorithm are combined to solve the model,thus improving the efficiency and accuracy of the solution.The analysis of a simple IEEE Garver’s 6-node system shows that the model and solution method are effective and feasible.Moreover,they are suitable for the coordinated planning of the power source and grid under a diversified nature of power supply and load.

Practice and Thinking of Plan Environmental Impact Assessment of Power Transmission and Transformation Grid in Nanjing

At present,the plan environmental impact assessment of power transmission and transformation grid is relatively mature. How to further improve the quality of plan environmental impact assessment of power grid during the "14^(th) Five-Year Plan" period is very important. In this paper,the plan environmental impact assessment of power grid in the Development Plan for Power Grid in Nanjing during the "13^(th) Five-Year Plan" Period is studied to further discuss the ideas,evaluation system and content framework of plan environmental impact assessment of power grid.

Research Reports on the 12^(th) Five-Year Plan for Electric Power Industry Power Grids

China Electricity Council organized competent authorities across the industry of electric power to work out the "Research Reports on the 12th Five-Year Plan for Electric Power Industry" in nearly one year, which provides a reference for governmental departments to formulate the 12th Five-Year Plan on energy and electric power industry. The magazine should publish the serial reports including power sources, power grids, equipment manufacture, energy and environment, and power economics. This paper presents the part of " power grids," in which the strategies of developing power grids are put forward.

Problems of Planning for Power Industry in China

On the basis of summing up the development of electric power industry in the 10th Five-Year Plan period, the idea of electric power development planning from 2006 to 2020 is presented. The authors analyzed ten main problems that existed in electric development during the 10th Five-Year Plan period, forecasted the electricity generation from 2006 to 2020, put forward the development strategy of power industry, discussed the component and development program of hydropower, thermal power, nuclear power, natural gas power and renewable power, outlined the present situations of six regional power grids, power transmission from western to eastern regions, UHV AC/DC power transmission and nationwide power grid interconnections, and finally gave out seven suggestions about electric power development in the future.

Research on Safety and Stability of Regional Power Grids to the Year 2020

The safety and stability study on Northeast, North, East, Northwest and Central China power grids had been carried out, which provided technical supports to planning design of regional power grids. By analyzing safety and stability under severe faults in regional power grids, revealed weaknesses on power grid configurations and measures for preventing from loss of stability were presented. In comparison of various schemes of power system safety and stability among parts of power grids, more than two recommended schemes can be chosen as reference in planning design for regional power grids. Considering the safety and stability control measures necessary for each power grids, it is believed the trunk networks of all power grids can fulfill the third criteria of Guideline for Power System Safety and Stability, while the weakness and predominated hydropower may deteriorate safety and stability of power grids. The power grid shall be regulated in line with the variation of boundary conditions.

基于误差幅空特性分析的空间负荷预测误差评价方法

对空间负荷预测误差进行有效评价是客观认识预测结果,指导预测结果合理应用的前提。然而,现有空间负荷预测误差评价的研究存在对误差的空间分布不考虑或考虑不充分导致评价不准确的问题。为此,提出一种基于误差幅空特性分析的空间负荷预测误差评价方法。首先,从空间负荷预测误差幅值大小和空间分布对电网规划影响的角度出发,对误差的幅空特性进行详细分析;其次,利用运输问题的数学模型来表征正负误差的幅空抵消特性,使用各空间邻近度–幅值误差值曲线与x轴围成面积之和来表征剩余未抵消误差的幅空叠加特性;然后,分别通过伏格尔法和各梯形面积累加公式来计算正负误差的幅空抵消影响值和剩余未抵消误差的幅空叠加影响值,并在此基础上构建空间负荷预测误差评价指标;最后,基于误差对电网规划的实际影响给出对误差评价指标性能的检验方法。算例分析表明,与传统方法相比,该文所提误差评价方法从幅值和空间两个维度实现了对空间负荷预测误差更为全面的评估,与误差对电网规划影响的实际情况贴近度更高。

基于灵敏度因子的随机电网规划方法

针对常规电网规划考虑系统灵活性不足的问题,建立多场景的不确定电网规划模型,该模型以设备投资成本和运行费用综合最小为目标,嵌入安全约束机组组合模型以充分反映系统灵活性的平衡;同时,鉴于常规电网规划模型规模过大,计算效率低下,提出一种基于灵敏度因子的电网规划方法,建立候选线路投建状态变量对输电断面约束的灵敏度模型,消除传统电网规划中的节点相角变量,实现线路和断面潮流的解耦,从而大幅提高电网规划求解效率。IEEE 118节点算例和实际电网算例的结果表明:对新能源消纳率的过高追求可能会导致巨大电网投资成本;同时,在中大型电力系统中,基于灵敏度因子的电网规划计算效率优势明显,从而验证模型和算法的有效性。

考虑电量出力行为的输电线路规划方法研究

为了解决传统输电线路规划方法存在的网损电量较大、规划效果不佳的问题,设计了考虑电量出力行为的输电线路规划方法。首先,通过非线性方程拟合,建立了电量出力行为约束条件。然后,通过计算电网潮流量的方式,完成了电量出力行为量化计算。最后,根据电量出力行为的数值水平,确定静态电压灵敏度指标的数值水平;联合规划系数修正表达式,实现了输电线路规划方法设计。对比试验结果表明:所提方法可以准确计算35 kV、110 kV电网组织中的电量出力行为,能够将网损电量控制在既定数值标准之下。应用此方法规划电力网络输电线路,能够有效控制网损电量,实现对应用电网的合理规划。该方法满足实际应用需求。

碳管理体系助力宁夏地区电网能源规划和城乡建设——基于国网宁夏电力的研究

我国“双碳”目标的确立对能源规划和清洁能源使用提出新要求,对电力行业而言,既是机遇,也是挑战。电网作为电力系统的枢纽,需要制定合理的碳管理策略,促进电力市场健康、有序发展,助力国家和地方低碳社会建设。文章在总结宁夏地区供能端、输送端和需求端能源规划现状的基础上,有针对性地提出优化策略;并以国网宁夏电力有限公司为例,进一步探索电网企业碳管理体系支撑下高效的低碳发展路径,从电网企业、能源规划及城乡建设三个维度提供可借鉴的经验。研究结果有利于推动电网行业的能源规划优化,助力城乡建设,推进国家和地方碳普惠建设,有效改善人居环境,为可持续绿色城市规划和乡村振兴提供新路径。

基于CIM标准的电网一体化规划信息模型及仿真系统研究

为实现电网内各级设备、分布式能源之间的协同管控,需对电网实行一体化规划,因此,研究基于CIM标准的电网一体化规划信息模型及仿真系统。基于CIM标准构建电网一体化规划信息模型引入电网一体化规划信息集成机制以及内存图数据库,实现电网信息集成,一体化管理网级、省级和地级之间的全部运行信息,存储至CIM整体模式中心的核心数据库中;以存储的数据为基础,通过电网数据多维分析引擎,构建仿真电网一体化规划仿真系统,并基于多维度信息可视化呈现电网负荷特性。测试结果显示:该系统的轮廓系数指标结果均在0.94以上,信息集成性能良好;数据查询所需最长时间为1136 ms,数据查询响应较快;能够获取电网不同负荷的变化情况,并呈现电网一体化规划后,各个区域的协调控制结果以及负荷调控仿真结果。

基于序列预测法的海上平台中长期电力负荷规划

海上平台电力负荷设计时需要对后续开发逐年用电负荷进行规划,而负荷预测的精确性直接关系到电力系统是否能够经济、可靠、安全的稳定运行,因此制定科学合理的负荷规划对海上平台电网建设有重要的意义。以某海上平台为例,采用优化系数法将A油田应急负荷由1195.6 kW优化至849.4 kW,应急电站规模由1500 kW降低至1000 kW,节约直接经济投资100万元。通过分析油田注水量与设计负荷之间的关系,采用序列预测法对B油田中长期用电负荷进行了规划,并与油田投产后的实际负荷数据进行了对比,根据分析结果可知,预测后的负荷误差波动均值为6.62%,远低于常规对中长期负荷预测误差10%的要求,极大地提高了电网负荷估算的精确度,不仅降低了平台发电及运行成本,还提高了油田建设的经济效益。

电网规划与电力设计对电网安全的价值

在电力供应行业快速发展的背景下,电网安全的影响力明显增强,电网规划与电力设计成为电网运行安全的重要影响因素。文章主要探究电网规划与电力设计对电网安全的价值,分析电网安全下电网规划与电力设计的价值因素,明确电网规划与电力设计对电网安全的实际效用和价值点,为电网规划与电力设计的改进优化提供方向。此外,分析电网安全下电网规划与电力设计的常见问题与保障措施,提升电网规划与电力设计的合理性,为电网安全提供有效保障。

电网规划与电力设计对电网安全影响研究

旨在探讨电网规划与电力设计对电网安全的影响,提高电网的效率、可靠性和安全性。分析了电网规划、电力设计的主要内容,梳理了电网规划与电力设计的要点以及现状,最后分析了不同的规划和设计方案对电网的影响,确定其对于外部扰动和内部故障的抵抗能力。为电力系统提供了更安全、可靠和高效的运行方案,以适应不断变化的需求和环境。

电网规划与电力设计对电网安全的作用探究

电网规划与电力设计是确保电网安全运行的关键环节。文章旨在深入探究这2个环节在保障电网安全方面的重要作用,通过理论研究和案例分析的方法,梳理了电网规划与电力设计的基本流程和关键因素。研究发现,合理的电网规划可以避免电网过载和故障,而电力设计则针对电网规划要求和电力需求,设计电网工程的技术参数和方案,提高电力系统的可靠性和适应性。然而,目前在实践中仍存在一些问题,如规划不合理、设计不科学等,这些问题可能影响电网的安全运行。针对这些问题,提出相应的对策和建议,包括优化规划方法、强化设计规范、提高设计人员的素质等。通过本研究,有望为电网规划与电力设计的改进提供参考和借鉴,从而提升电网整体的安全水平。

新能源发展对电网规划的影响

新能源的快速发展正日益成为推动全球能源结构转型的核心力量。在此过程中,电网作为能源供应的关键基础设施,其规划与建设面临前所未有的挑战。随着风能、太阳能等可再生能源比例的提高,传统电网的调度模式需进行重大调整。这一转变不仅涉及技术层面的创新,还触及经济、政策与管理的多方面因素,对电网规划的方法提出了新的要求。文章旨在研究新能源发展对电网规划的影响,并提出相应策略,期望为电网规划提供有益思考。