摘要
智能电网环境下智能电表和智能家电等智能终端设备在用户侧的推广应用,为电力系统安全稳定控制提供了丰富的动态响应信息。文章将智能需求响应技术与第3道防线中的低频减载措施相结合,利用负荷侧的快速响应资源与第3道防线进行协调控制,提出一种考虑智能家电响应的新型低频减载方案。基于智能电表与电网之间可双向通信的特点,控制智能家电主动提前响应系统的调控需求,通过与传统低频减载方案的协调,可阻止系统频率的大幅度跌落并尽快恢复至额定值附近,提高了系统运行的灵活性和可靠性。时域仿真表明该低频减载方案能够适应电网复杂的运行环境,快速有效地抑制故障下的频率跌落,减少切负荷代价。
Dissemination and application of intelligent terminal equipments such as intelligent meters and smart household appliances at the consumer side under smart grid environment offer abundant dynamic response information for security and stability control of power grid. Combining smart demand response technology with underfrequency load shedding measures involved in the third line of defense specified in Technical Guide For Electric Power System Security And Stability Control, the coordinated control could be carried out by using quick response resources and the third line of defense, and a new underfrequency load shedding scheme considering the response of smart household appliances is proposed. In view of the feature that the two-way communication can be implemented between smart meters and power grid, the smart household appliances can be controlled to be actively responded to the control and regulation requirement of power grid in advance, and through coordinating with traditional underfrequency load shedding scheme the substantial drop of system frequency could be prevented and system frequency could be restored nearly to its rated value as quick as possible, thus the flexibility and reliability of power grid operation could be improved. Results of time-domain simulation show that the proposed scheme of underfrequency load shedding can adapt to complex operational environment of power grid and restrict the fault-caused frequency drop quickly, and effectively reduce the expense for load shedding as well.
出处
《电网技术》
EI
CSCD
北大核心
2013年第10期2861-2867,共7页
Power System Technology
基金
国家863高技术基金项目(2011AA05A115)
国家电网公司科技项目(基于智能化切负荷的低频
低压减载理论与方法研究)~~
关键词
智能家电
智能电表
需求响应
低频减载
smart household appliance
smart meter
demand response
underfrequency load shedding（UFLS）
