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김완홍(Kim Wan-hong),송석하(Song Suk-ha),김용수(Kim Yong-su),김철식(Kim Cheol-sik),정선호(Jeong Sun-ho) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
스마트그리드는 기존 전력망에 IT 기술을 접목해서 전력의 공급자와 소비자가 양방향으로 실시간 정보를 교환함으로써 에너지 효율을 최적화하고자 하는 차세대 전력망을 말한다. 우리정부는 국가 핵심 아젠다로 선정하여 추진하고 있으며, 2009년 11월까지 스마트그리드 Roadmap을 발표할 예정이다. Roadmap의 내용에 따라 전략시장과 전력계통 운영시스템을 운영하고 있는 전력IT 분야에도 많은 변화와 그에 따른 사전적인 준비가 필요할 것이다. 본 논문에서는 스마트그리드 구현을 위한 전력IT 분야의 중장기적인 대응방안에 대해 고찰하였다.
이봉길(Lee Bong-Kil),김완홍(Kim Wan-Hong),최준호(Choi Joon-Ho) 한국태양에너지학회 2020 한국태양에너지학회 논문집 Vol.40 No.3
In accordance with the Government’s policy, renewable power generation is expanding very largely. This leads to increasing uncertainty in the power market and power system owing to the intermittent and fluctuating output characteristics of renewable power generators. Data on the acquisition of renewable power generators can be largely classified according to the operation of the power market and power system. Data on the settlement for the payment for the power amount are acquired in the power market, and real-time data for monitoring the status and output of the generators are acquired in the power system. However, renewable power generators operating in the power market have different acquisition cycles depending on the method of communication of the power meter. They acquire data only for settlement purposes and have no real-time data, which requires improvement. In this paper, the acquisition status is reviewed by classifying the data of renewable power generators into settlement and real-time data. In addition, measures and acquisition criteria for real-time data of renewable power generators for improving the acquisition method are proposed
박용욱,유정한,박홍준,조양범,유선오,김완홍,Park, Yong-Wook,Yoo, Jung-Han,Park, Hong-Jun,Cho, Yang-Bum,Yu, Sun-O,Kim, Wan-Hong 대한족부족관절학회 2002 대한족부족관절학회지 Vol.6 No.1
Purpose: To evaluate the effectiveness of callotasis using the external fixator for the treatment of brachymetatarsia. Materials and Methods: Eleven patients(15 cases) who underwent callotasis were available. Follow-up averaged 23 months(15-38 months). Both the patients' postoperative satisfaction and the postoperative radiographic results were retrospectively evaluated. Results: The duration from applying the external fixator to remove averaged 15 weeks (8-21 weeks). We did osteotomy again in two cases because of early consolidation at the osteotomy site during distraction period. All cases were evaluated mild claw toe deformity and motional pain in metatarsophalangeal joint, but all patients satisfied the postoperative results except one complained motional pain and stiffness in metatarsophalangeal joint. The metatarsal shortening averaged 13mm(9-18mm) before operation. The amount of distraction for shortened metatarsals averaged 15mm(5-22mm). We found the 6 cases of narrowing of the metatarsophalangeal joint, 2 cases of subluxation of the metatarsophalangeal joint. Conclusion: We think that callotasis with external fixator is good operative method for the brachymetatarsia.
정선호(Jeong Sun-ho),김용수(Kim Yong-su),김완홍(Kim Wan-Hong),이창규(Lee Chang-gyu) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
투명하고 공정한 전력시장 운영과 완벽한 전력계통 운영을 위해서는 시장운영시스템(CBP, MOS)과 계통운영 기능을 수행하는 EMS 시스템이 완벽하게 기능할 수 있도록 지속적인 관심과 관리가 필요하다. 계통운영과 시장운영 지원을 위해 관련 IT 시스템을 완벽하게 운영해야 하며, 이러한 필요성에 따라 전력IT 가동률 지표를 활용하여 관리하고 있다. 전력IT 가동률 지표를 구성하고 있는 3가지 지표인 EMS 종합가동률, MOS 종합가동률, CBP 종합가동률 지표에 대한 개념과 주요 실적에 대해 살펴보고, 높은 수준의 신뢰도를 유지하고 개선할 수 있는 방안에 대해서 살펴보도록 하겠다.
박용욱,정영기,유정한,박홍준,유선오,김완홍,Park, Yong-Wook,Chung, Yung-Khee,Yoo, Jung-Han,Park, Hong-Jun,Yu, Sun-O,Kim, Wan-Hong 대한족부족관절학회 2000 대한족부족관절학회지 Vol.4 No.2
Purpose: To validate the major bony causes and postoperative results of the first metatarsal head plantar pain. Materials and Methods: We experienced one case of the fracture and non-union of the medial sesamoid treated by autogenous calcaneal bone graft, one case of the fracture and non-union and two cases of the hypoplasia of the medial sesamoid treated by excision of medial sesamoid, one case of the arthrosis between the first metatarsal head and the medial sesamoid treated by plantar 1/2 partial excision of the medial sesamoid, and two cases of the metatarsus primus nexus treated by basal metatarsal closing wedge osteotomy between October 1995 and September 1999. The mean follow-up period was 28 months. We evaluated the results by using of the clinical rating systems for the hallux and the radiographic findings. Results: An excellent results were achieved in all cases except one which was preoperatively diagnosed as metatarsus primus nexus. But, clinically this one case also satisfied with the postoperative result. Radiologically, We did not find the malunion or nonunion of the medial sesamoid treated by bone graft and of the metatarsus primus flex us treated by basal metatarsal closing wedge osteotomy. And also we did not find the postoperative fracture of the medial sesamoid treated by plantar 1/2 partial excision. There were no postoperative complications in all cases. Conclusion: We think that the good results may be achieved from the patients with the plantar pain of the first metatarsal head by the exact diagnosis and aggressive treatments.