Sitech Successfully Implements Smart Microgrid Project at Large Petrochemical Facility in Gansu

Release time:

2026-01-30

Key words:

Recently, Sitech successfully deployed a smart microgrid project at a large petrochemical facility in Gansu Province. Centered on a 2.5MWp photovoltaic (PV) system and a 500kW/1000kWh energy storage system (ESS), the project establishes a park-level smart energy system integrating generation, storage, and consumption. Guided by the national "dual-carbon" goals and the strategic emphasis on critical infrastructure security, this initiative aims to build a safe, reliable, intelligent, and efficient Microgrid Energy Management System (EMS), setting a benchmark for the intelligent and green transformation of traditional energy facilities.

01 Strategic Positioning: Dual Empowerment for Safety and Decarbonization

The energy upgrade path of this project consistently addresses two core objectives: safety assurance and green transition. As a large petrochemical facility, power interruptions or power quality anomalies could lead to major safety incidents. Traditional energy management models have become inadequate for meeting efficient and safe operational demands.

Against this backdrop, and guided by the corporate group's "Green and Low-Carbon" transformation strategy, the project leverages the region's abundant natural resources to deploy distributed PV and ESS. Its core goal is to establish a safe, reliable, intelligent, and efficient microgrid EMS. Serving as the "smart brain" of the microgrid, this system enables comprehensive monitoring, optimized dispatch, and integrated management of distributed energy resources, the ESS, and load systems, creating a "dual guarantee" for the oil depot's energy supply.

02 Technical Architecture: Hardware-Software Synergy for an Intelligent Core

The project adopts an advanced "Edge-End" collaborative architecture and a "Hierarchical-Zoned-Clustered" management model. Through efficient hardware-software integration, it builds a highly resilient and secure energy regulation system to ensure stable operation.

Core Hardware: A Robust Computing Foundation for Stable Operation
The core equipment is deeply adapted to the petrochemical facility's demanding operating environment, characterized by flammability, explosion risks, and high interference. With redundant design and anti-interference capabilities, it establishes a robust hardware foundation for 24/7 uninterrupted operation.

Microgrid Coordination Controller: Utilizes domestically produced chips to achieve real-time coordinated control of PV, ESS, and loads, meeting industrial-grade stability requirements.

Software Platform: An Efficient and Intelligent Dispatch Brain
The software platform is specifically optimized to form an efficient, synergistic technological loop, supporting intelligent dispatch decisions.

Professional Operating System: Adapted for industrial scenarios at the oil depot, it ensures high compatibility and security for stable, fault-free operation.

Intelligent Database: Enables secure energy data storage, efficient retrieval, and intelligent analysis, providing accurate data support for optimizing dispatch strategies.

Data Acquisition & Coordinated Control: Multi-Protocol Integrated Perception

To achieve global microgrid coordination, the project establishes a unified data acquisition system. Multi-protocol integration technology ensures precise perception of operational status across all segments.

PV Data Acquisition: Captures real-time operational data from the PV system and uploads it to the coordination control cabinet for dynamic monitoring.

ESS Monitoring & Control: Enables precise two-way communication and regulation of the ESS, ensuring orderly charging and discharging.

Grid Power Metering: Accurately measures the park's total load, providing data for formulating dispatch strategies.

03 Dispatch Strategy: Precise Control for Maximized Benefits

Customized dispatch strategies were designed based on regional electricity price characteristics and the oil depot's energy consumption patterns, ensuring stable power supply while maximizing new energy utilization and economic returns.

New Energy Utilization Strategy: Prioritize Self-Consumption, Optimize Excess Power

The system adopts a "surplus power can be fed to the grid" mode, achieving efficient use of solar energy and increasing the green power self-sufficiency rate.

When PV generation is sufficient: Priority is given to meeting the oil depot's own load. Surplus power is consumed by the ESS. When the ESS is fully charged, any remaining excess is fed into the main grid.

When PV generation matches load: 100% of the green power is used on-site, reducing dependence on grid supply.

When PV generation is insufficient: The ESS discharges first to supplement the deficit. Any remaining gap is covered by the main grid, ensuring an uninterrupted power supply.

Orderly Charge/Discharge Strategy: Time-Phased Control Aligned with Electricity Prices

Optimized time-phased charge/discharge control, aligned with regional electricity price patterns, enhances energy utilization efficiency.

During PV generation hours: Dynamically adjusts the ESS's charge/discharge status to prioritize consumption of PV-generated green power, ensuring the ESS is fully charged and ready before evening.

During other hours: The ESS discharges in an orderly manner according to load demand, ensuring stable supply until the ESS reaches a preset minimum reserve level, awaiting replenishment from PV generation the next day.

04 Project Benefits: A Triple Win for Safety, Economy, and Sustainability

Through the deployment of the microgrid EMS and its intelligent dispatch strategies, the project achieves synergistic improvements in safety, economic, and environmental benefits.

Safety Benefits: The efficient and stable EMS safeguards the continuity of the oil depot's power supply, strengthening the safety defense line for this Class-A hazardous area from an energy regulation perspective.

Economic Benefits: The substantial daily power generation from the PV system, combined with optimized ESS dispatch, creates a stable source of revenue growth and reduces overall energy costs.

Environmental Benefits: The project significantly increases the green power consumption rate, reducing fossil fuel consumption and carbon emissions, supporting the oil depot's "Green and Low-Carbon" transformation goals.

Looking ahead, with the deepening integration and synergistic evolution of microgrid and Virtual Power Plant (VPP) technologies, microgrids—as core units for aggregating distributed energy resources—will continue to expand their application within traditional energy facilities. Through VPP platforms, they will enable cross-scenario, large-scale intelligent dispatch, driving more traditional facilities toward integrated "Source-Grid-Load-Storage" transformation. This technological synergy empowers safe, efficient, and green development, injecting robust and flexible momentum into the construction of a new power system and a modern energy system.

None

On-site Report: "Unmanned Health Check" on High-Voltage Lines