Coordinated Power Control for Energy Storage and Loads

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Solution Overview

Problem

Traditional lightning protection methods for power systems are passive and do not fully utilize the active regulation capabilities of the system, failing to provide real-time power adjustments based on lightning strike probability, which limits their effectiveness in minimizing impact on energy storage systems and loads.

Innovation Solution

A lightning strike probability-based coordinated power control method for energy storage systems and loads, involving the collection of predicted lightning probability values, determination of short-term scheduling and compensation cost functions, and adjustment of power output to optimize energy storage and load regulation, thereby establishing a relationship between the energy storage system, regulatable load, and lightning strike probability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If passive lightning protection measures (lightning rods, lightning wires) are adopted, then lightning strike risk is reduced, but the system cannot perform active regulation and real-time power adjustments based on lightning strike probability

Engineering Contradiction:
Improvelightning protection capabilityVSAvoidactive regulation capability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent transforms passive static lightning protection into active dynamic protection by implementing real-time power adjustments of energy storage systems and regulatable loads based on predicted lightning strike probabilities. The system dynamically modifies power output and load regulation in response to changing lightning risk conditions, enabling adaptive defense rather than fixed passive protection.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies preliminary action by using predicted lightning strike probabilities to proactively adjust power system operations before actual lightning strikes occur. The energy storage system and regulatable loads are pre-regulated based on forecasted lightning risk, allowing the system to be prepared and minimize damage before the harmful event happens.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If real-time power regulation is implemented based on lightning strike probability, then active defense capability is improved, but system complexity and control requirements increase

Engineering Contradiction:
Improveactive lightning protection capabilityVSAvoidpower control system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements feedback mechanisms by continuously monitoring predicted lightning strike probabilities and using this information to adjust power system operations. The system receives feedback on lightning risk levels and responds by modifying energy storage output and load regulation, creating a closed-loop control system that adapts to changing conditions while maintaining manageable complexity through structured control logic.

Inventive Principle:
Principle #23Feedback

3Reliability

If energy storage system and regulatable load are used for power flow adjustment, then lightning protection effectiveness is enhanced, but regulation costs and compensation costs increase

Engineering Contradiction:
Improvelightning protection effectivenessVSAvoidregulation cost and compensation cost
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies parameter changes by adjusting power output levels and load regulation parameters based on predicted lightning strike probabilities. The system modifies operational parameters such as energy storage discharge/charge rates and load power levels in response to lightning risk forecasts, enabling flexible adaptation while optimizing the balance between protection effectiveness and operational costs.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11444476B1Lightning strike probability-based coordinated power control method for energy storage system and load
Publication Date: 2022.09.13 STATE GRID JIANGSU ELECTRIC POWER CO LTD SUZHOU BRANCH
  • US11444476B1 patent drawing

AI summary

A lightning strike probability-based coordinated power control method for an energy storage system and a load adjusts output power of an energy storage system and a regulatable load based on a real-time predicted lightning strike probability. This reduces a correlation between a power grid in a lightning region and an external power grid, minimizes impact of a lightning strike if any on the external power grid, and decreases an economic loss due to the lightning strike in the lightning region. The present disclosure establishes a relationship between the output power of the energy storage system, the regulated power of the regulatable load, and a lightning strike probability in a same region, and then regulates the power of the energy storage system and the regulatable load in real time based on the lightning strike probability.