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<!doctype html>
<html lang="en" data-theme="auto">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Le Fu</title>
<meta
name="description"
content="Academic homepage for Le Fu, focused on power-system optimization, network control, power-system dynamics, uncertainty, and distributionally robust optimization."
/>
<link rel="stylesheet" href="styles.css" />
</head>
<body id="home">
<header class="topbar">
<div class="topbar-inner">
<a class="site-name" href="#home">Le Fu</a>
<nav class="main-nav" aria-label="Primary navigation">
<a href="#home">Home</a>
<a href="#publications">Publications</a>
<a href="#news">News</a>
<a href="#experience">Experience</a>
<a href="#projects">Projects</a>
<a href="#awards">Awards</a>
<a href="#skills">Skills</a>
<a href="#contact">Contact</a>
</nav>
<div class="top-actions">
<button class="icon-button search-button" type="button" aria-label="Search this page" title="Search">
<svg viewBox="0 0 24 24" aria-hidden="true">
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</header>
<main class="layout">
<aside class="sidebar" aria-label="Profile">
<img class="avatar" src="assets/profile-placeholder.svg" alt="Le Fu portrait placeholder" />
<h1>Le Fu</h1>
<p class="position">Master's Student</p>
<a class="institution" href="https://www.tsinghua.edu.cn/en/">Tsinghua University</a>
<p class="sidebar-note">Power-system optimization, network control, dynamics, and uncertainty</p>
<div class="profile-links" aria-label="Academic profiles">
<a href="mailto:ff23@mails.tsinghua.edu.cn" aria-label="Email">Email</a>
<span class="cv-placeholder" aria-label="Curriculum vitae">CV</span>
</div>
</aside>
<div class="content">
<section class="section" aria-labelledby="bio-title">
<h2 id="bio-title">Biography</h2>
<p>
I am a master's student at Tsinghua University and a prospective Ph.D. applicant in power
systems and optimization. My work focuses on power-system optimization, network control,
power-system dynamics, and uncertainty-aware decision-making for modern energy systems.
My master's research is supervised by <a href="https://github.com/metab0t">Prof. Yue Yang</a>.
I participate in <a href="https://github.com/metab0t/PyOptInterface">PyOptInterface</a>,
an open-source Python library that provides a unified API for constructing and solving
mathematical optimization models.
</p>
<p>
My current research develops optimization models and computational methods for nonlinear
and uncertainty-aware power-system operation. I am especially interested in robust and
distributionally robust optimization, convex relaxation and bound tightening, networked
dynamic systems, and scalable algorithms for coordinated transmission, distribution, and
microgrid operation.
</p>
<p>
I received dual bachelor's degrees in Engineering and Management from Qilu University of
Technology, graduating first among 226 students. I am also interested in graph-theoretic
analysis of power-system resilience, robust and distributionally robust optimization, and
vehicle-to-grid integration.
</p>
<div class="highlight-grid" aria-label="Academic highlights">
<article>
<span>1/226</span>
Ranked first among 226 undergraduates
</article>
<article>
<span>IEEE TSG</span>
Accepted work on high-order motifs and grid resilience
</article>
<article>
<span>PESGM 2025</span>
Published work on online power-flow NLP acceleration
</article>
<article>
<span>Top 0.01%</span>
President Scholarship recipient
</article>
</div>
<div class="bio-columns" aria-label="Research overview">
<div>
<h3>Research Interests</h3>
<ul>
<li>Power-system optimization</li>
<li>Power-system dynamics</li>
<li>Network control</li>
<li>Uncertainty-aware optimization</li>
<li>Distributionally robust optimization</li>
</ul>
</div>
<div>
<h3>Education</h3>
<ul>
<li>M.S., Tsinghua University, Sep 2023 - Jun 2026</li>
<li>Dual bachelor's degrees, Qilu University of Technology, Sep 2019 - Jun 2023</li>
<li>GPA: 4.43/5.0; ranked <strong class="rank-emphasis">1st</strong> out of 226 students</li>
</ul>
</div>
</div>
</section>
<section class="section" id="publications" aria-labelledby="publications-title">
<h2 id="publications-title">Publications</h2>
<p class="helper-text">
Work spanning power-system optimization, nonlinear programming, network dynamics,
uncertainty modeling, graph-theoretic resilience, and related energy-system problems.
</p>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/motif-resilience.jpg" alt="" />
</figure>
<div class="pub-body">
<h3><a href="https://ieeexplore.ieee.org/document/11301846">Deepening the Understanding of Interdependence Between Higher-Order Motifs and Resilience in Power Grid Through Line Graph</a></h3>
<p class="venue">IEEE Transactions on Smart Grid, published, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Z. Ruan, J. Guo, X. Meng, and X. Wang</p>
<p class="topic-tags"><span>Graph-theoretic resilience</span><span>Line graph</span><span>Network motifs</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/conic-relaxation.jpg" alt="" />
</figure>
<div class="pub-body">
<h3>Strengthening Conic Relaxation of Power Flow in Radial Distribution Network via Convex Envelope and Bound Tightening</h3>
<p class="venue">CSEE Journal of Power and Energy Systems, accepted, 2025</p>
<p class="authors">Y. Yang, <span class="author-me">L. Fu*</span>, X. Yang, C. Lin, and W. Wu</p>
<p class="topic-tags"><span>Convex relaxation</span><span>Bound tightening</span><span>Distribution networks</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/tail-clustered-wdrjcc.jpg" alt="" />
</figure>
<div class="pub-body">
<h3>A Tail-Clustered Strengthened Linear Approximation for Wasserstein Distributionally Robust Joint Chance-Constrained Unit Commitment</h3>
<p class="venue">IEEE Transactions on Power Systems, under review, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Y. Yang*, C. Lin, Q. Wang, Z. Ruan, X. Yang, and W. Wu</p>
<p class="topic-tags"><span>Distributionally robust optimization</span><span>Unit commitment</span><span>Chance constraints</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/gas-reduced-order.jpg" alt="" />
</figure>
<div class="pub-body">
<h3>A Reduced-Order Dynamic Gas Network Model for Multi-Period Coordinated Operation of Integrated Power-Gas Systems</h3>
<p class="venue">IEEE Transactions on Smart Grid, under review, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Y. Yang*, X. Yang, C. Lin, L. Xu, and W. Wu</p>
<p class="topic-tags"><span>Network dynamics</span><span>Power-gas systems</span><span>Reduced-order modeling</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/gas-high-fidelity.png" alt="" />
</figure>
<div class="pub-body">
<h3>A High-Fidelity Time Domain Model for Gas Network Transients via Network-Level Rational Approximation</h3>
<p class="venue">IEEE Transactions on Power Systems, accepted, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Y. Yang*, X. Yang, C. Lin, L. Xu, S. Ni, and W. Wu</p>
<p class="topic-tags"><span>Network control</span><span>Gas transients</span><span>Rational approximation</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/pv-pq-switching.jpg" alt="" />
</figure>
<div class="pub-body">
<h3><a href="https://ieeexplore.ieee.org/document/11225548">Online Power Flow Nonlinear Programming Modeling and Solution Acceleration Method Considering PV-PQ Switching</a></h3>
<p class="venue">2025 IEEE Power & Energy Society General Meeting (PESGM), Texas, USA, published, 2025</p>
<p class="authors"><span class="author-me">L. Fu*</span> and Y. Ju</p>
<p class="topic-tags"><span>SQP trust region</span><span>Power-flow acceleration</span><span>PV/PQ switching</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/lme-adjoint-acopf.png" alt="" />
</figure>
<div class="pub-body">
<h3>An Efficient Algorithm to Calculate Locational Marginal Emissions in ACOPF via Adjoint Optimization Reformulation</h3>
<p class="venue">IEEE Transactions on Power Systems, under review, 2026</p>
<p class="authors">Y. Yang, <span class="author-me">L. Fu*</span>, L. Sang, L. Xu, X. Yang, C. Lin, and W. Wu</p>
<p class="topic-tags"><span>ACOPF</span><span>Adjoint optimization</span><span>Marginal emissions</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/contextual-uncertainty.jpg" alt="" />
</figure>
<div class="pub-body">
<h3><a href="https://arxiv.org/abs/2605.07441">Data-Driven Contextual-Aware Uncertainty Set for Robust Dispatch of Power Systems</a></h3>
<p class="venue">IEEE Transactions on Power Systems, under review, 2026</p>
<p class="authors">Z. Ruan, Y. Liu, <span class="author-me">L. Fu</span>, and L. Shi</p>
<p class="topic-tags"><span>Uncertainty dispatch</span><span>Robust optimization</span><span>Contextual modeling</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/compressed-dro-resilience.png" alt="" />
</figure>
<div class="pub-body">
<h3>Compressed Distributionally Robust Optimization for Resilience Enhancement of Distribution Networks Under Uncertainty</h3>
<p class="venue">2026 11th Asia Conference on Power and Electrical Engineering (ACPEE), Macau, China, published, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Y. Yang*, and S. Ni</p>
<p class="topic-tags"><span>Distribution resilience</span><span>Wasserstein DRO</span><span>Online clustering</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/frequency-secure-uc.png" alt="" />
</figure>
<div class="pub-body">
<h3>Adaptive Frequency-Secure Unit Commitment With Wind-Based Virtual Inertia Support</h3>
<p class="venue">2026 11th Asia Conference on Power and Electrical Engineering (ACPEE), Macau, China, published, 2026</p>
<p class="authors">S. Yang, <span class="author-me">L. Fu*</span>, Y. Wang, G. Zhuang, C. Chen, and Y. Yang</p>
<p class="topic-tags"><span>Frequency security</span><span>Virtual inertia</span><span>Unit commitment</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/thermal-response.jpg" alt="" />
</figure>
<div class="pub-body">
<h3>Data-Driven Temporal Recursive Thermal Response Model for Borehole Heat Exchangers Based on Sum of Exponential Approximation</h3>
<p class="venue">Renewable Energy, under review, 2026</p>
<p class="authors">Y. Yang, P. Wu, <span class="author-me">L. Fu</span>, L. Xu, X. Yang, C. Lin, and W. Wu</p>
<p class="topic-tags"><span>Energy systems</span><span>Thermal response</span><span>Reduced-order modeling</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb" aria-hidden="true">
<img src="assets/publication-thumbs/final/hubble-tension.jpg" alt="" />
</figure>
<div class="pub-body">
<h3><a href="https://iopscience.iop.org/article/10.1088/1674-4527/acafc6">A Better Reconciliation of Hubble Tension in the Dark Energy Scalar Field</a></h3>
<p class="venue">Research in Astronomy and Astrophysics, published, 2023</p>
<p class="authors"><span class="author-me">L. Fu</span>, L. Yang, and M. Zhang*</p>
<p class="topic-tags"><span>Scalar-field cosmology</span><span>Hubble tension</span><span>Bayesian evidence</span></p>
</div>
</article>
<h3 class="pub-group-heading">Awaiting Submission</h3>
<article class="publication">
<figure class="pub-thumb pub-thumb--label" aria-hidden="true">
<span>TAC II</span>
</figure>
<div class="pub-body">
<h3>Mean-Field Reduction for Synchronization Boundary Prediction in Power Grid—Part II: Second-Order Inertial Extension and Dynamic Loss-of-Lock Mechanisms</h3>
<p class="venue">IEEE Transactions on Automatic Control, awaiting submission, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Z. Sun, Y. Yang, S. Ni, X. Yang, C. Lin, and W. Wu</p>
<p class="topic-tags"><span>Power-grid synchronization</span><span>Mean-field reduction</span><span>Loss-of-lock dynamics</span></p>
</div>
</article>
<article class="publication">
<figure class="pub-thumb pub-thumb--label" aria-hidden="true">
<span>TAC I</span>
</figure>
<div class="pub-body">
<h3>Mean-Field Reduction for Synchronization Boundary Prediction in Power Grid—Part I: First-Order Closure and Effective Coupling</h3>
<p class="venue">IEEE Transactions on Automatic Control, awaiting submission, 2026</p>
<p class="authors"><span class="author-me">L. Fu</span>, Z. Sun, Y. Yang, S. Ni, X. Yang, C. Lin, and W. Wu</p>
<p class="topic-tags"><span>Power-grid synchronization</span><span>Mean-field closure</span><span>Effective coupling</span></p>
</div>
</article>
<h3 class="pub-group-heading">Patents</h3>
<div class="entry-list compact-list">
<article>
<h3>A Trust Region Power Flow Method Considering Inequality Constraints for Line-Loss Analysis</h3>
<p>Chinese patent, under substantive examination, 2024</p>
</article>
<article>
<h3>State Estimation Method for Distribution Networks Based on Trust Region</h3>
<p>Chinese patent, under substantive examination, 2024</p>
</article>
<article>
<h3>An Efficient Solution Method for Nonlinear Optimization of Power-System Power Flow</h3>
<p>Chinese patent, submitted, 2025</p>
</article>
</div>
</section>
<section class="section" id="news" aria-labelledby="news-title">
<h2 id="news-title">News</h2>
<h3 class="year-heading">2026</h3>
<ul class="news-list">
<li>
<span class="date">Jun 2026</span>
I expect to complete my master's degree at Tsinghua University.
</li>
</ul>
<h3 class="year-heading">2025</h3>
<ul class="news-list">
<li>
<span class="date">2025</span>
I participated in <a href="https://github.com/metab0t/PyOptInterface">PyOptInterface</a>,
an open-source Python interface for fast mathematical optimization modeling, hosted under
<a href="https://github.com/metab0t">Prof. Yue Yang</a>'s GitHub account.
</li>
<li>
<span class="date">2025</span>
Our paper on high-order motifs and power-grid resilience was accepted by IEEE Transactions
on Smart Grid.
</li>
<li>
<span class="date">2025</span>
Our work on PV/PQ switching and online power-flow NLP acceleration was published at IEEE
PES General Meeting.
</li>
<li>
<span class="date">Jun 2025</span>
I joined a National Key Research and Development Program project on coordinated
transmission, distribution, and microgrid regulation under high DER access.
</li>
</ul>
<h3 class="year-heading">2024</h3>
<ul class="news-list">
<li>
<span class="date">2024</span>
I led a Tsinghua University rural revitalization team and coordinated education programs
across five villages.
</li>
</ul>
<h3 class="year-heading">2023</h3>
<ul class="news-list">
<li>
<span class="date">2023</span>
I received the Outstanding Graduation Thesis award from Qilu University of Technology and
the Outstanding Graduate of Shandong Province honor.
</li>
<li>
<span class="date">2023</span>
I received the President Scholarship, awarded to only 0.01% of students.
</li>
</ul>
<h3 class="year-heading">2022</h3>
<ul class="news-list">
<li>
<span class="date">2022</span>
I was named one of the university's Top Ten Students, an honor given to only ten students
across the university.
</li>
</ul>
</section>
<section class="section" id="experience" aria-labelledby="experience-title">
<h2 id="experience-title">Experience</h2>
<article class="timeline-item">
<div class="meta-line">
<span>Tsinghua Sichuan Energy Internet Research Institute</span>
<time>Sep 2023 - Jun 2026</time>
</div>
<h3>Energy Planning Trainee</h3>
<p>
Researched acceleration methods for nonlinear programming in power systems, contributed to
technology projects on power-flow optimization theory and line-loss calculation, and
supported literature synthesis, data collection, and technical documentation.
</p>
</article>
<article class="timeline-item">
<div class="meta-line">
<span>Nonlinear Optimization Solver Project</span>
<time>Sep 2023 - Jun 2026</time>
</div>
<h3>Nonlinear Programming Solver Development</h3>
<p>
Contributed to solver development for nonlinear optimization in power-system applications,
including C++ implementations of interior-point filter line-search and trust-region SQP
routines with Eigen, integration of Python-based structure-aware automatic differentiation
with C++ libraries, and computational experiments on acceleration strategies.
</p>
</article>
<article class="timeline-item">
<div class="meta-line">
<span>National Science Fund for Young Scholars</span>
<time>Sep 2020 - Jul 2022</time>
</div>
<h3>Controllability of Dynamic Systems with Time-Sequential Network Edges</h3>
<p>
Studied edge controllability in complex networks, identified uniqueness properties of
driver-node sets from local node information, and developed a binary-network model for
stock trend prediction in a second bachelor's thesis.
</p>
</article>
<article class="timeline-item">
<div class="meta-line">
<span>Natural Science Foundation of Shandong Province</span>
<time>Sep 2021 - Aug 2022</time>
</div>
<h3>Dark-Energy Scalar Fields and the Hubble Constant</h3>
<p>
Explored quintessence, phantom, and quintom scalar-field models for Hubble tension,
evaluated Bayesian evidence with MCEvidence, and analyzed possible kinematic explanations.
</p>
</article>
</section>
<section class="section" id="projects" aria-labelledby="projects-title">
<h2 id="projects-title">Projects</h2>
<article class="project">
<div class="meta-line">
<span>National Key Research and Development Program</span>
<time>Jun 2025 - present</time>
</div>
<h3>Coordinated Regulation of Transmission, Distribution, and Microgrid Systems</h3>
<p>
Established a multi-time-scale power-flow optimization model with embedded active/reactive
power coordination, studied equivalent modeling of nonsmooth flow constraints, and proposed
a large-scale parallel solution strategy based on adaptive automatic segmentation.
</p>
</article>
<article class="project">
<div class="meta-line">
<span>China Southern Power Grid Technology Project</span>
<time>Jul 2024 - Jun 2025</time>
</div>
<h3>Line-Loss Analysis for Distribution Networks with Integrated DERs</h3>
<p>
Developed theoretical models for line-loss calculation under high DER penetration, prepared
technical reports and white papers, and documented data collection and model validation
workflows for reproducible analysis.
</p>
</article>
<article class="project">
<div class="meta-line">
<span>State Grid Corporation of China Headquarters Technology Project</span>
<time>Sep 2023 - Dec 2023</time>
</div>
<h3>Autonomous-Collaborative Planning and Operation of Distribution Network-Microgrids</h3>
<p>
Drafted proposal and feasibility materials, prepared bid documents and progress reports,
and helped implement and validate optimization algorithms for distributed source-load
interaction using historical and real-time microgrid data.
</p>
</article>
</section>
<section class="section" id="awards" aria-labelledby="awards-title">
<h2 id="awards-title">Selected Awards</h2>
<div class="entry-list award-list">
<article>
<h3>President Scholarship</h3>
<p>Top 0.01%, 2021-2022</p>
</article>
<article>
<h3>National Scholarship</h3>
<p>Top 0.2%, 2019-2020</p>
</article>
<article>
<h3>Outstanding Graduate of Shandong Province</h3>
<p>Top 1%, 2023-2024</p>
</article>
<article>
<h3>Outstanding Graduation Thesis, Qilu University of Technology</h3>
<p>Top 2%, 2023-2024</p>
</article>
<article>
<h3>First Prize Scholarship, Qilu University of Technology</h3>
<p>Top 5%, received three times, 2019-2023</p>
</article>
<article>
<h3>Annual Academic Achievement Role Model</h3>
<p>2023-2024</p>
</article>
<article>
<h3>First Prize, Physics Competition of Shandong Province</h3>
<p>Top 0.1%, 2020-2021</p>
</article>
<article>
<h3>Bronze Award, Tsinghua University Rural Revitalization</h3>
<p>2024-2025</p>
</article>
</div>
</section>
<section class="section" id="skills" aria-labelledby="skills-title">
<h2 id="skills-title">Skills and Service</h2>
<div class="skill-grid">
<article>
<h3>Programming</h3>
<p>Python, C++, MATLAB, Fortran</p>
</article>
<article>
<h3>Tools</h3>
<p>Eigen, GAMS, LaTeX, Microsoft Office, Adobe Illustrator, Photoshop</p>
</article>
<article>
<h3>Languages</h3>
<p>Chinese, English</p>
</article>
<article>
<h3>Research Methods</h3>
<p>Nonlinear programming, automatic differentiation, convex relaxation, robust optimization</p>
</article>
</div>
<article class="timeline-item service-item">
<div class="meta-line">
<span>Tsinghua University Rural Revitalization Team</span>
<time>Dec 2024 - Jan 2025</time>
</div>
<h3>Project Lead</h3>
<p>Coordinated more than 20 volunteers and implemented education programs in five villages.</p>
</article>
<article class="timeline-item service-item">
<div class="meta-line">
<span>Student Union, School of Electrical Engineering, Qilu University of Technology</span>
<time>Mar 2020 - Dec 2021</time>
</div>
<h3>Head of the Rights and Interests Department</h3>
<p>Assisted with enrollment procedures for new students and scholarship and grant evaluation.</p>
</article>
</section>
<section class="section contact-section" id="contact" aria-labelledby="contact-title">
<div>
<h2 id="contact-title">Contact</h2>
<p>
I am always glad to hear from researchers and students interested in power-system
optimization, network control, dynamics, uncertainty, and distributionally robust
optimization.
</p>
<div class="contact-links">
<a href="mailto:ff23@mails.tsinghua.edu.cn">ff23@mails.tsinghua.edu.cn</a>
<span class="cv-placeholder">Download CV</span>
</div>
</div>
<address class="address">
Tsinghua University<br />
Beijing, China<br />
Master's Student
</address>
</section>
</div>
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