基于R 2LC 2的中高压多电平UPQC拓扑评估体系

doi:10.11985/2015.11.007

摘要/Abstract

摘要：

构建了一种基于R ²LC ²（可靠、冗余、损耗、特性、成本）的中高压多电平统一电能质量调节器（Unified Power Quality Conditioner,UPQC）拓扑评估体系。选定多种应用于UPQC的多电平拓扑结构类型,建立多电平UPQC拓扑结构的损耗模型、故障模型、仿真模型、冗余模型和器件模型,分别用以分析并形成损耗与拓扑关系、拓扑可靠性、暂稳态特性、系统稳定性、结构与成本关系的评价指标。结合五种评价指标的相互影响关系,建立层次分析模型,定量得到五种评价指标的权重系数,构造成对比较矩阵,计算排序权向量,全面分析多种多电平UPQC拓扑结构的整体性能,实现多电平UPQC拓扑结构的综合准确评估,提供多电平UPQC变流器拓扑结构类型的选择依据。选取级联H桥、模块化多电平变流器和换桥臂多电平变流器为实际应用范例,验证了所提评估体系的可行性。

关键词: 中高压换流器, R ²LC ², 多电平UPQC, 评估体系, 层次分析模型, 换桥臂多电平变流器

Abstract:

The assessment system for medium-high voltage multilevel UPQC topology is constructed based on R ²LC ² (reliability, redundancy, loss, cost, characteristic). After selecting some kinds of unified power quality conditioner (UPQC) topology structure, models are set up including loss model, fault model, simulation model, redundancy model and device model, to analyze and form assessment indexes including relationship between loss and topology, topology reliability, transient and steady-state characteristics, system stability, relationship between structure and cost respectively. Combining reciprocal affection among aforementioned five assessment indexes, hierarchy analysis model is established to quantitatively obtain weight coefficient of assessment indexes, construct pairwise comparison matrices, calculate sequence weight vector and completely analyze ensemble performance of many multilevel UPQC topology structure. Finally, the assessment system realizes comprehensive and accurate assessment of multilevel UPQC topology and provides selecting rules of multilevel UPQC topology types. A real application example uses cascade H bridge, modular multilevel converter (MMC) and alternate-arm multilevel converter (A ²MC) to confirm the practicability of the proposed assessment system.

Key words: Medium-high voltage converter, R ²LC ², multilevel UPQC, assessment system, hierarchy analysis model, A ²MC

中图分类号:

TM46

冯兴田, 孙添添, 马文忠. 基于R ²LC ²的中高压多电平UPQC拓扑评估体系[J]. 电气工程学报, 2015, 10(11): 46-52.

Feng Xingtian, Sun Tiantian , Ma Wenzhong . Assessment System for Medium-High Voltage Multilevel UPQC Topology Based on R ²LC ²[J]. Journal of Electrical Engineering, 2015, 10(11): 46-52.

图/表 5

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表1

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表3

参考文献 20

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标度	含义
1	表示两个因素相比,具有同样重要性
3	表示两个因素相比,一个因素比另一个因素稍微重要
5	表示两个因素相比,一个因素比另一个因素明显重要
7	表示两个因素相比,一个因素比另一个因素强烈重要
9	表示两个因素相比,一个因素比另一个因素极端重要
2,4,6,8	上述两相邻判断的中值
倒数	因素i与j比较的判断为h_ij,则因素j与i比较的判断为h_ji = 1/h_ij

i	1	2	3	4	5
ω_i	（0.630, 0.218, 0.152）	（0.493, 0.311, 0.196）	（0.169, 0.443, 0.387）	（0.210, 0.550, 0.240）	（0.099, 0.364, 0.537）
λ_i	3.108	3.054	3.018	3.018	3.094
CI_i	0.054	0.027	0.009	0.009	0.047
RI_i	0.58	0.58	0.58	0.58	0.58
CR_i	0.093	0.047	0.016	0.016	0.081

基于R ²LC ²的中高压多电平UPQC拓扑评估体系

Assessment System for Medium-High Voltage Multilevel UPQC Topology Based on R ²LC ²

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