Abstract
This paper introduces the development and actual test results of the Korean Smart Distribution Management System (KSDMS). The KSDMS has been designed and developed to cope with the lack of interconnection capability of the Dispersed Energy Resource (DER), to provide standardization and compatibility, and to implement automatic processing of service restoration, in the existing Distribution Automation System (DAS) in Korea. First, real-time system analysis and control application programs were developed, to solve the problems of the existing DAS; and the Distribution Management System (DMS) platform was developed, to run the developed application programs. Second, international standard-based communication, platform, and database structures were adopted, for standardization and compatibility. Third, a platform and application program functions were developed to process faults automatically; and a communication device and an intelligent electronic device (IED) were developed to automate fault restoration, through communication between devices. The KSDMS was evaluated by three tests: unit function test, platform and application program integration test, and empirical test. The first two were conducted on both small and large demonstration systems. The empirical test was performed at the Power Testing Center (PTC) in Gochang, and on a real system, at the Korea Electric Power Corporation (KEPCO), on Jeju Island. The test results verified that the KSDMS can actively resolve the problems of the existing DAS.
Highlights
The power systems industry has focused on the introduction of the Dispersed EnergyResource (DER), and on the creation of its market
If a violation occurs in the distribution system, the Korean Smart Distribution Management System (KSDMS) Voltage VAr Optimization (VVO) minimizes the cost of the switching operations of all control equipment, and calculates the loss-minimizing reference values of the Dispersed Energy Resource (DER) and SVC, based on the reference values of the control equipment that can resolve the violation
A practical distribution system is a large-scale system; for example, the number of buses that are operated by a single office is normally of the order of several thousands
Summary
The power systems industry has focused on the introduction of the Dispersed Energy. The DER is a smart grid technology that converges information communication and power system technologies This focus is the result of worldwide attention to environmental pollution, such as CO2 emissions, and the demands of governments, power-related industries and consumers, for the creation of a new market. The DMS platform and application programs for real-time operation of such large-size distribution systems need to be developed, and to be empirically evaluated. The next-generation DMS system improves on several limitations of the existing DAS system, such as lack of receptivity of DER, lack of standardization and compatibility, and manual processing of faults. It thereby prepares for the optimal operation of the future distribution system. The field test was performed at the Power Testing Center (PTC) in Gochang, and on a real system at the Korea Electric Power Corporation (KEPCO), on Jeju Island
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