摘要
本研究建構國聖電廠(核二廠)之RELAP5-3D輸入檔的控制系統。核二廠採用BWR6（沸水式）反應器、Mark III的圍阻體，並由台灣電力公司營運。該系統的額定功率為2,894 MWth。而核二廠之RELAP5-3D輸入檔來自於核能研究所。此控制系統的編程是根據電廠工程模擬器內的控制系統而制定，而電廠工程模擬器是在3 Key Master平台上開發而成的。
在本研究中，輸入檔先以常數功率初始化為穩態，再依序將飼水控制、壓力控制、和再循環流量控制加入輸入檔。接著採用飼水三元控制圖，而三元指的是“窄幅水位”、“蒸汽質量流率”和“飼水質量流率”。以飼水控制系統將輸入檔初始化至穩定狀態後，再加入壓力控制，用以管控汽機控制閥之閥開度。接著加入再循環流控制，以控制再循環流的質量流率。最後，採用點動力功率來模擬暫態。
最後以“100％功率負載棄載測試”、“96％功率主蒸汽隔離閥關閉測試”、“68％功率再循環泵跳脫測試”以上三項功率測試之結果，來測試輸入檔之控制系統的正確性。

Abstract

In the present study, the control system of RELAP5-3D input deck of Kuosheng Nuclear Power station is constructed. The plant employs a BWR6 (Boiling Water Reactor) reactor with Mark III containment and is operated by Taiwan Power Company. The rated power of the system is 2,894 MWth. The RELAP5-3D input deck is obtained from Institute of Nuclear Energy Research. The control system is formulated based on the control system embedded in the plant engineering simulator, which is developed on the 3 Key Master platforms.
In the present study, the deck is initialized to a steady state condition with constant power. The feedwater control, pressure control, and recirculation flow control are incorporated sequentially. The three- element feewdwater control scheme is adopted. The elements are“narrow range water level”, “steam mass flow rate”, and “feed water mass flow rate”. After the deck is initialized to steady state with the feedwater control system, the Pressure Control is added to govern the valve area of Turbine Control Valves. The Recirculation Flow Control is incorporated to control the mass flow rate of Recirculation Flow. Finally, the Point Kinetic is adopted for the transient simulation.
The results of the power tests "100% power load rejection test", "96% power main steam isolation valve closure test", and "68% power recirculation pump trip test," are used to test the validity of the control system of the input deck.

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