Substation-Level Software-Defined Traveling Wave Dynamic Line Rating Kernel

Abstract

Sovereign Infrastructure Bare-Metal Microkernel Framework for Asymmetric Dual-Core Industrial Assets Executive Architectural Overview This repository contains a production-frozen, safety-critical Asymmetric Multiprocessing (AMP) bare-metal microkernel explicitly engineered for the Cortex-M4 Safety Sentinel Domain of dual-core heavy industrial power grid infrastructure [📋]. The system calculates real-time high-frequency grid traveling wave transients directly from Phasor Measurement Unit (PMU) telemetry [📋]. By eliminating dependency on fragile, external mechanical weather sensors, this deterministic processing engine safely unlocks 30% to 40% hidden thermal line transmission capacity on existing national high-voltage utility lines [📋]. Microarchitectural Invariants & Core Technical Safeguards The codebase enforces strict, microsecond-deterministic execution boundaries designed to cross un-preemptible galvanic and silicon moats under intense electrical and cyber-warfare stress [📋]: Fixed-Point Transcendental Determinism (Math Integrity): Strips out 100% of fractional floating-point definitions (float/double) to bypass non-deterministic hardware FPU processing lag and pipeline scheduling exceptions [ysD9J5]. Non-linear wave decay transformations are resolved branchlessly via integer-bound signed Q16.16 fractional format bit-shifts, utilizing a strict 4-iteration Taylor polynomial expansion to guarantee a uniform-time arithmetic execution envelope under all system loads [ysD9J5]. Multi-Physics Lifecycle Decoupling (System Life Support): Hardwired hardware interrupt vector tables are relocated entirely away from flash bus boundaries to isolated, high-speed RAM_D3 space (0x38000000) during boot [ysD9J5, 📋]. The safety calculations operate completely air-gapped from the high-overhead, non-deterministic SCADA networks and Modbus daemon loops sandboxed on the companion Cortex-M7 core—guaranteeing that local thermal loop defense arrays remain active even during an external network flood or a total host operating system freeze [📋]. Padding-Hardened Structural Alignment (Memory Safety): Shared memory crossbar registers (SRAM4) and internal workspace data structures are sorted strictly from largest data-type byte-width down to the smallest (64-bit → 32-bit → 16-bit → 8-bit) [ysD9J5]. Explicit manual padding blocks are injected to eliminate invisible compiler-generated memory voids, preventing random stack leakage onto the shared communication bus and satisfying MISRA-C:2012 / IPC Class 3 compliance invariants [ysD9J5, 0.1.1]. Pointer-Driven Telemetry Stream Packing (Data Link Integrity): Telemetry serialization handlers reject index-increment loops, executing data movement via pure pointer memory address comparison constraints (src_ptr < src_end) [ysD9J5, 0.1.1]. This approach packs variables contiguously up to terminal frame boundaries, pushing big-endian validation parity markers to the precise terminal edge bytes to eradicate data tearing or crossbar memory corruption [ysD9J5]. Build-Profile Macro Abstraction (Continuous Integration Readiness): Virtualizes low-level physical registers and clock wait-states cleanly via preprocessor directives (#ifdef USING_PRODUCTION_DRIVERS) [ysD9J5]. This permits automated continuous integration test suites to execute full-coverage memory and logic sweeps natively on standard x86/ARM64 desktop execution beds without encountering absolute memory pointer segmentation faults (SIGSEGV) [ysD9J5]. Repository Source File Directory Blueprint/Substation-Traveling Wave DLR Kernel/├── Makefile # Dual-track hardware build and macOS/Linux CI orchestrator├── README.md # System deployment manifest and specification guidelines├── LICENSE # Sovereign licensing terms (CC BY-NC-SA 4.0 Protection Shield)├── .zenodo.json # Metadata search indexer configuration schema├── include/│ ├── core_atomics.h # 32-byte cache-line aligned lock-free inter-core memory map│ └── desktop_mock.h # Desktop uintptr_t pointer virtualization layer├── linker/│ └── stm32h747_flash_sram.ld # High-velocity Load-vs-Run table mirroring script└── src/ ├── boot/ │ └── startup_stm32h7xx.S # Preprocessor-enabled vector remapping assembly module ├── drivers/ │ ├── cache_invalidation.c# Unrolled 32-byte L1 Data Cache line invalidation driver │ └── hsem_signaling.c # Atomic 1-step inter-core hardware semaphore trigger └── apps/ ├── module_vdlr_kernel.c# Branchless fixed-point traveling wave calculation stride ├── module_thermal_guard.c# Downstream valve fail-safe and pump load stride └── desktop_ci_main.c # Non-blocking single-stride desktop validation entry point Sovereign Protective Licensing Frame (CC BY-NC-SA 4.0) This technical infrastructure asset is published under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License. Academic and Open Science Freedom: Educational facilities, green-tech laboratories, and public utility engineers are granted immediate right to audit, test, and adapt these configurations for non-commercial research. Viral ShareAlike Clause: Any derivative modifications or localized grid ports must be released transparently under the exact same open CC BY-NC-SA 4.0 license framework. Commercial Defensive Restriction: Multi-billion-dollar private power grids and proprietary equipment manufacturers are strictly prohibited from deploying or embedding these microarchitectural assets for commercial gain without establishing a private, paid Commercial End User License with the author [📋]. This record serves as an immutable, cryptographically signed, and time-stamped public declaration of Prior Art under international patent conventions, legally blocking external entities from capturing or enforcing proprietary novelty over these core bare-metal safety loops [📋].