概括
并行模拟为分析复杂的队列网络提供了准确和高效的替代方案. 这种方法克服了理论解决方案的计算局限性,特别是对于具有许多客户类的系统.
科学领域:
- 运营研究 运营研究
- 计算机科学 计算机科学
- 性能建模的性能建模.
背景情况:
- 封闭的BCMP排队网络被广泛用于系统建模.
- 理论解决方案面临着随着系统复杂性增加的计算局限性.
- 平行计算为增强复杂系统分析提供了潜力.
研究的目的:
- 评估使用并行模拟来分析封闭的BCMP队列网络的可行性.
- 为了比较并行模拟与理论解决方案的准确性和计算效率.
- 确定理论解决方案的局限性以及模拟变得必要的条件.
主要方法:
- 应用了一个封闭的BCMP排队网络模型.
- 利用并行计算进行平均值分析 (MVA).
- 将不同系统参数的理论计算与并行模拟结果进行比较.
主要成果:
- 理论计算时间随着客户数量的增加而呈指数增长.
- 平行模拟在>= 4 个客户类别的系统的可接受误差范围内趋于理论值.
- 超级计算机的使用为多达3个客户类别提供了理论解决方案.
结论:
- 并行模拟为大规模BCMP队列网络的理论解决方案提供了准确且计算效率高的替代方案.
- 对于超出理论方法计算能力的系统,仿真是必不可少的.
- 该研究验证了平行模拟在绩效评估中的有效性.
相关概念视频
Multimachine Stability
141
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
141
The Power Flow Problem and Solution
167
Power flow problem analysis is fundamental for determining real and reactive power flows in network components, such as transmission lines, transformers, and loads. The power system's single-line diagram provides data on the bus, transmission line, and transformer. Each bus k in the system is characterized by four key variables: voltage magnitude Vk, phase angle δk, real power Pk, and reactive power Qk. Two of these four variables are inputs, while the...
167
Equivalent Capacitance
1.4K
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
The following strategies are adopted to calculate...
1.4K
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
40
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
40
Bus Impedance Matrix
104
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
104
Mesh Analysis
553
Mesh analysis is a valuable method for simplifying circuit analysis using mesh currents as key circuit variables. Unlike nodal analysis, which focuses on determining unknown voltages, mesh analysis applies Kirchhoff's voltage law (KVL) to find unknown currents within a circuit. This method is particularly convenient in reducing the number of simultaneous equations that need to be solved.
A fundamental concept in mesh analysis is the definition of meshes and mesh currents. A mesh is a closed...
A fundamental concept in mesh analysis is the definition of meshes and mesh currents. A mesh is a closed...
553


