IEC 61850 Helps Make Quick Work of Smart Grid Configuration

In session PB-HMI10, "Substation Automation for SMART GRID: Configuration using IEC 61850 based IEDs," Chris Smith, director, SCADA Business, Invensys Operations Management, gave an overview of the Invensys world vis-à-vis configuration of next-generation intelligent electronic devices (IEDs) in substation control architectures.

Using the Invensys Operations Management Substation Automation Configuration (SAC) product, the engineer can import a single-lin
Using the Invensys Operations Management Substation Automation Configuration (SAC) product, the engineer can import a single-lin
根据IEC标准,可以快速配置来创建智能电网。Smart Grid是一个电力网络,可以智能地整合与IT连接的所有设备和用户的操作,从发电机,变电站,远程终端单元(RTU)以及电路安全和可靠性设备;到整个监督控制和数据获取(SCADA)系统;给操作员;和消费者。目的是提供可持续,经济和安全的电力供应。

IEC 61850-compliant equipment can be quickly configured using Substation Configuration Language (SCL), a descriptive, XML-based, human-readable programming language. "It contains every single action of every single component in the substation," Smith said. "The driver for this comprehensive digital representation stems from the primary IEC 61850 schema, which calls for complete and rapid communications among all levels of equipment and control, especially at the substation, where high voltages are transformed to low and then sent out on the distribution grid. This process demands interoperability and protection, monitoring and metering functions—delivered in as automated a fashion as possible."

In the smart grid world, substation protection relays are replaced by more flexible and multi-functional IEDs that can respond to situations in milliseconds and send data via multiple paths to higher-level equipment. "There are wheels within wheels," Smith said. "Conventional Ethernet transmissions go through a conventional TCP/IP layer, but the same data can travel directly via ultra-high-speed communications. The alternate data paths are there to handle all contingencies. You don’t want a failure-to-act to be triggered by a network delay."

"In the IEC 68150 world, client functions listen to the net, gathering and keeping tabs on what is going on," Smith said. "A server function sends all the messages—some being very special kinds of messages that control devices and others with reports, all in high speed. Devices can contain both client and server. For example, our SCD-5200 Power RTU functions both as server and client.

"We offer two key licensed development environments. On the design side, the Substation Automation Configuration product provides the highest level configuration management," Smith said.

This high level product contains the development platform (the InFusion Integrated Design Environment) and SCADA Industry Objects—the latter, a fit-for-purpose SCADA application module. Under that module are IEC 61850 Device Objects and IEC 61850 Substation Objects, which contain all the configurable and controllable functions, as well as built-in constraints to prevent non-compliant designs. Output is automatically generated in SCL.

There is, in addition a Designer Product, a low-cost tool for designing components within the substation system for use by specialist engineers (for example, the protection engineer) in the design of specific functionalities.

史密斯说:“这是一个精美且易于使用的设计系统。”“通过捕获和嵌入对象本身中的所有适用约束,工程师可以自由地快速,准确地配置设备。”
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