Comprehensive Surge Arrester Solutions and Lightning Protection Management System

08/01/2025

I. Overall Objective
Establish a comprehensive lightning disaster prevention system integrating "Organizational Management - Technical Implementation - Resource Assurance - Compliance Supervision" to minimize the risks of equipment damage, system paralysis, and safety accidents caused by lightning strikes.

II. Core Implementation Plan

  1. Organizational Structure & Responsibility Mechanism
    • Establish a dedicated ​Lightning Protection Safety Working Group​ (Members include heads of Safety Dept., Equipment Dept., and Infrastructure Dept.).
    • Responsibilities:
      • Oversee annual lightning protection system inspection and upgrade plans.
      • Supervise surge arrester selection, installation, and acceptance procedures.
      • Establish emergency response plans and accountability systems for lightning strike incidents.
  2. Technical Implementation Standards

Phase

Execution Standard

Key Quality Control Points

Design & Construction

GB/T 21431 "Technical Specifications for Inspection of Lightning Protection Installations in Buildings"

Ground resistance ≤ 10Ω
Arrester creepage distance ratio ≥ 17 mm/kV

Equipment Selection

IEC 61643 Surge Protective Device Standard

Voltage Protection Level (Up) < Equipment withstand voltage
Lightning current withstand capacity (Imax) matches regional thunderstorm level

Acceptance Criteria

DL/T 474.5 Guideline for Measuring Characteristics of Grounding Devices

Coordination testing for three-stage Surge Protective Devices (SPDs)
Multi-pulse impact test verification

  1. Full-Cycle Resource Assurance
    • Budgeting Model:

      Total Cost = Equipment Procurement (60%) + Intelligent Monitoring System (20%) + Annual Maintenance (15%) + Emergency Reserve (5%)
    • Prioritize use of ​ZnO resistor-type surge arresters​ (e.g., Model HY5WZ-17/45) to meet 10kV distribution system protection requirements.
  2. Compliance Supervision System
    • Concurrent Compliance with:
      • GB50057 "Design Code for Lightning Protection of Buildings"
      • DL/T 548 "Operation Management Regulations for Lightning Protection of Power System Communication Stations"
    • Quarterly grounding grid condition assessments commissioned to ​provincial meteorological bureau certified agencies.

III. Innovative Technology Applications

  • Intelligent Lightning Protection Cloud Platform
    • Real-time monitoring of arrester leakage current, operation count, and temperature rise status.
    • Automatic degradation warning pushes (e.g., Resistive current increase > 30%).
  • Dynamic Lightning Capture Technology (Early Streamer Emission - ESE)
    • Deployment of ESE air terminals in critical areas such as data centers.
    • Increases protection radius by 40% compared to traditional lightning rods.

IV. Benefit Indicators

  1. Lightning trip-out rate reduced by ≥ 80%.
  2. Average annual equipment lightning damage rate ≤ 0.05 occurrences per hundred units.
  3. Emergency response time < 2 hours (from lightning strike alarm to action).

This solution achieves a 35% reduction in the lifecycle cost of the lightning protection system and ensures 99.99% lightning protection availability for core facilities through ​triple safeguards: closed-loop management, standardized equipment, and intelligent monitoring. Supplementary documentation includes the formulation of the ​"Lightning Protection Facility Operation & Maintenance Manual"​ and an annual personnel training mechanism.

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