Transmission Flow Limiter for Nuclear Plant Output Control
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Solution Overview
Problem
Existing power systems face challenges in controlling the output power of nuclear power plants due to their configuration, which prevents direct communication with external control systems, leading to difficulties in managing power transmission and maintaining grid stability.
Innovation Solution
A power system configuration that includes a nuclear power plant, a substation, and a power transmission flow limiter, where the limiter adjusts the turbine bypass valve to regulate output power based on signals from a control system, allowing nuclear power plants to passively limit power transmission without direct input/output signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct communication between control system and nuclear power plant is implemented, then power output control precision is improved, but system complexity and safety risks increase
Solution Approach 1:
The patent introduces a power transmission flow limiter as an intermediary device installed on the transmission line between the nuclear power plant and substation. This limiter passively controls power transmission flow based on grid conditions without requiring direct communication with the power plant's control system, thereby achieving precise power output control while maintaining system simplicity and safety.
2Speed
If direct communication between control system and nuclear power plant is implemented, then real-time control capability is improved, but safety risks increase
Solution Approach 1:
The power transmission flow limiter acts as a safety intermediary that passively responds to grid conditions without requiring active communication with the nuclear power plant. This eliminates communication-related safety risks while maintaining real-time control capability through automatic detection and response to transmission line conditions.
Solution Approach 2:
The limiter autonomously monitors transmission line conditions and automatically adjusts power flow limitation based on detected grid status. This self-service capability eliminates the need for external communication signals, reducing safety risks associated with communication systems while maintaining real-time responsive control.
3Stability of the object's composition
If passive power limitation method is used, then system stability is improved, but power transmission efficiency decreases
Solution Approach 1:
The power transmission flow limiter dynamically adjusts its power limitation level based on real-time detection of transmission line conditions and grid status. This dynamic adjustment capability allows the system to maintain optimal power transmission efficiency while ensuring system stability, avoiding the need for fixed passive limitation that would continuously reduce efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables appropriate regulation of nuclear power plant output power, enhancing system stability by limiting power transmission and maintaining grid stability without requiring direct communication with external control systems.
Implementation Method 1
a turbine bypass valve that distributes steam generated by the steam generator to the steam condenser and the turbine
Implementation Method 2
a generator driven by the turbine
Data Source
AI summary
A power system, which can appropriately control an output power of a power plant, includes a power plant, a power transmission flow limiter inserted between the power plant and a substation via transmission lines and, and a control system, wherein the control system outputs to the power transmission flow limiter a power transmission flow limitation signal CP indicating that an output power P of the power plant should be limited; and the power transmission flow limiter limits the output power P of the power plant, which is transmitted via the transmission lines and on the basis of the power transmission flow limitation signal CP.