Development of a Model Driven ACSI Conformance Testing for IEC 61850-Based IED

Globally, traditional power systems are rapidly transforming towards the adoption of smart grid platforms. Substations which are at the center of the electric power transformation from the power plant are changing to IEC 61850 based digital substations. Therefore, within substation, there is a growing demand for the IEC 61850 based Intelligent Electronic Devices (IEDs). The operation of multiple manufacturers of IEDs in a single digital substation network increases the need for IEC 61850 communications specification conformance diagnosis to ensure interoperability for efficient data exchange between IEDs. The IEC 61850-10 presents test items for diagnosing communication specification conformance. There are many test tools available in the market today to test the compliance of the IEC 61850 communications specifications to the IED. In this paper, we propose a model-based diagnostic method for IED communication conformance testing. The proposed model-based software therefore uses the “drag and drop” technique to select the various IEC 61850 communication services (objects) required to design the test case in a user friendly Graphical User Interface (GUI). This makes the service conformance testing more flexible for test engineers and system integrators especially in situations that require test case modifications. Also, the proposed software tool makes it easy to understand the various IEC 61850 services using the friendly GUI.

广义多源储能系统综合建模与能量优化分析

综合能源配电系统(integrated energy distribution system,IEDS)中能量交互密切,能源耦合关系复杂,储能是其经济与稳定运行的关键环节。传统储能往往费用较高,且网络级大规模储能受限于地理环境、物理状态、经济条件等因素而未能广泛应用。针对上述问题,该文利用电力与天然气的灵活耦合与多能互补特性,通过对IEDS多能流优化调度与网络侧资源综合利用,提出了一种广义多源储能系统(generalized multi-source energy storage,GMSES)模型,可以在不改变IEDS网络结构、不新增储能设备的基础上,实现GMSES网络级储能充、放电功能与能量优化管理。在综合考虑能量流和设备约束的基础上,该文结合具体算例,探究了GMSES能量优化方法,验证了GMSES模型可有效提高系统经济性,并具有平抑可再生能源波动的潜力。

Review of Key Problems Related to Integrated Energy Distribution Systems

Integrated energy distribution system(IEDS)is one of the integrated energy and power system forms,which involves electricity/gas/cold/heat and other various energy forms.The energy coupling relationship is close and complex.IEDS is the focus of regional energy internet research and development at home and abroad.Compared with the traditional power distribution system,IEDS through the multi-energy coupling link comprehensive utilization,effectively improve the distribution system economy,safety,reliability,flexibility and toughness,but also to ease the regional energy system environmental pressure.IEDS is an important direction for the future development of energy systems,and its related research and practice on China’s energy system development also has important practical and strategic significance.This paper summarizes the related researches of the IEDS and explores the energy operation characteristics and coupling mechanisms.What’s more,the integrated model of IEDS is summarized.On these bases,this paper discusses and prospects some key issues such as joint planning,optimization control and security analysis,state estimation and situational awareness and generalized demand side management.