含LCC/MMC交直流混联系统的状态估计及不良数据检测

doi:10.11930/j.issn.1004-9649.202307020

摘要/Abstract

摘要：

基于调度系统导出的通用信息模型（common information model，CIM）中的XML和E文档，从数据生成的角度出发，首先将导出文档转化为状态估计原始输入数据，考虑交流系统与电网换相换流器（line commutated converter，LCC）、模块化多电平换流器（modular multilevel converter，MMC）以及LCC与MMC间的相互影响，采用统一迭代法对500 kV子网络进行交直流状态估计建模；其次，在原始量测数据的基础上施加高斯噪声，借助最大化残差检验方法以进行不良数据的检测与辨识；最后，通过仿真数据验证了交直流状态估计模型及不良数据检测与辨识的有效性。

关键词: CIM/XML, 交直流状态估计, LCC, MMC, 不良数据的检测与辨识, 最大化残差检验

Abstract:

Based on the CIM/XML and CIM/E documents exported from the regional dispatching system, this paper focuses on data generation and starts by converting the exported documents into raw input data for state estimation. Considering the interactions between the AC system and LCC, MMC, and between LCC and MMC, the unified iterative method is used to model the AC/DC state estimation of the 500kV subnetwork. Subsequently, the Gaussian noise is added to the original measurement data, and the maximum residual test method is employed for detecting and identifying bad data. Finally, the effectiveness of the proposed models for AC/DC state estimation and the detection and identification of bad data are validated through simulation data.

Key words: CIM/XML, AC/DC state estimation, LCC, MMC, detection and identification of bad data, maximum likelihood residual test

赵化时, 黄耀辉, 宋智强, 许建中, 郑可欣, 梁康康. 含LCC/MMC交直流混联系统的状态估计及不良数据检测[J]. 中国电力, 2024, 57(11): 62-69.

Huashi ZHAO, Yaohui HUANG, Zhiqiang SONG, Jianzhong XU, Kexin ZHENG, Kangkang LIANG. State Estimation and Bad Data Detection in Hybrid AC/DC Systems with LCC/MMC[J]. Electric Power, 2024, 57(11): 62-69.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202307020

https://www.electricpower.com.cn/CN/Y2024/V57/I11/62

图/表 9

图 1 CIM/XML数据转化示意

Fig.1 Schematic diagram of CIM/XML data conversion

图 2 交直流系统稳态模型示意

Fig.2 Schematic diagram of steady-state model for AC/DC system

表 1 CIM/XML文档中设备数量

Table 1 Number of devices in CIM/XML documents

设备种类		设备数量/个
交流线路		4017
直流线路		28
母线		5320
电容及电抗		2279
负荷		5068
接地刀闸		14673
断路器		22683
刀闸		55532
直流开关		1534
发电机组		1285
变压器绕组		6526

表 2 交直流系统量测量

Table 2 Measurements for AC/DC systems

节点/线路	量测类型	数量/个
交流节点	节点电压幅值量测	188
	节点注入有功量测	188
	节点注入无功量测	188
交流线路	线路有功量测	230
交流线路	线路无功量测	230
LCC	交流有功量测	4
	交流无功量测	4
	直流功率量测	4
	直流电压量测	4
	直流电流量测	4
MMC	交流有功量测	2
	交流无功量测	2
	直流功率量测	2
	直流电压量测	2
	直流电流量测	2
直流线路	直流有功量测	4

图 3 交直流混联部分拓扑

Fig.3 Topology of the hybrid AC/DC interconnected system

图 4 电压幅值量测和附加10%高斯噪声量测

Fig.4 Voltage magnitude measurement and an additional 10% Gaussian noise measurement

图 5 有功/无功量测和附加10%高斯噪声量测

Fig.5 Active/reactive power measurement and an additional 10% Gaussian noise measurement

图 6 交流量测中不良数据出现点位

Fig.6 Abnormal data points in AC measurement

图 7 不同噪声下的节点不平衡量

Fig.7 Node unbalance under different noise levels

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