| 引用本文: | 贾晋峰,易浩民,夏向阳,等.分布式能源接入电力系统的新型计量系统[J].电力系统保护与控制,2017,45(3):118-124.[点击复制] |
| JIA Jinfeng,YI Haomin,XIA Xiangyang,et al.Distributed energy power system access new metering system[J].Power System Protection and Control,2017,45(3):118-124[点击复制] |
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| 摘要: |
| 新能源系统、储能设备等设备接入到电力系统中，电网中的谐波含量大大增加，传统的电能计量系统已经无法满足多能源接入电网的计量需求。分析了影响电能电量计量的各个方面，提出了一种新型计量方案。在运用智能仪表的基础上，特别增加了谐波计量模块，采取先消除谐波，使采样环节不受干扰提高精度，后利用dq坐标系快速而准确地估计出电网电压的谐波。仿真结果验证了该方案能有效估计出谐波值，进而实现了新能源并网时电能的更准确计量。 |
| 关键词: 电能计量 谐波计量 混合误差估计 |
| DOI：10.7667/PSPC160187 |
| 投稿时间：2016-02-04修订日期：2016-04-26 |
| 基金项目:重庆市电力公司科学技术项目(2016渝电科技自60#);长沙市科技计划项目(K1501012-11) |
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| Distributed energy power system access new metering system |
| JIA Jinfeng,YI Haomin,XIA Xiangyang,LI Jingye,WU Yueyang,XIA Bangjie |
| (Chongqing Urban Power Supply Branch, State Grid Chongqing Electric Power Company, Chongqing 400015, China;College of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410114, China) |
| Abstract: |
| When new energy systems, energy storage devices, and all client devices are connected to power system, grid harmonic content will increase significantly, and the traditional energy metering system has been unable to meet the needs of multi-energy metering access to the grid. This paper analyzes the impact of various aspects of energy consumption metering, and proposes a new measurement scheme. Based on the use of intelligent instruments, a harmonic metering module is increased in particular. It eliminates harmonics firstly to improve the accuracy of the sampling aspects without disturbance, and then uses dq coordinate system to quickly and accurately estimate the harmonic grid voltage. Simulation results show that the scheme can effectively estimate the harmonic value, thus achieving a more accurate measurement of electricity when new energy is connected to the grid. This work is supported by Science and Technology Project of Chongqing Electric Power Company (No. 2016 YD S& T 60#) and Science and Technology Program of Changsha City (No. K1501012-11). |
| Key words: power measurement harmonic measurement mixed error estimation |
