GB/T 45905.2-2025 in English

Data Exchange functional requirements must support basic configuration, task control, and status monitoring. It must obtain data from external business systems through messages or services, and implement data transmission, reception, and storage in a set manner.

5.2 Application Function Requirements

The application function layer includes 11 core modules, each with clear functional requirements:

Application and Release Data Management must implement functions such as basic operating parameter application management, business entity market application management, and market disclosure data release management, and encrypt the storage, transmission, and sealing of key data.

Reliability Unit Commitment requires functions such as unit combination constraint management, data verification and processing, and unit combination clearing, supporting iterative calculations with power flow safety analysis.

Day-Ahead Market, Intraday Market, and Real-Time Market correspond to market clearing functions on different timescales, and all require functions such as constraint management, data processing and verification, market clearing calculations, result monitoring, and exception handling.

The ancillary service market should support functions such as automatic calculation of ancillary service market demand, data preparation, market clearing, results management, and benefit analysis.

Inter-provincial market support should implement functions such as application data management, aggregation, verification, and reporting, as well as transaction result query and decomposition.

Tidal flow safety analysis should include functions for plan topology generation and analysis, base-state tide analysis, and sensitivity analysis.

Market risk management should implement functions for market risk parameter setting, risk identification, risk monitoring, and risk management.

Market assessment and analysis should support assessment and analysis of multiple aspects, including market supply and demand, quotations, concentration, results, and behavior.

Market simulation and deduction should realize the functions of market declaration data simulation, deduction data management, market clearing deduction, historical clearing inversion and deduction result analysis.

Performance index requirements

The standard puts forward clear requirements for the performance of provincial technical support systems:

Data Interaction Specifications

The provincial technical support system needs to interact with multiple external systems for data, primarily including:

Interaction with the provincial dispatching automation system: Obtain market input data such as power grid models, equipment decommissioning and recommissioning plans, section limits, load forecasts, and new energy forecasts from the dispatching automation system, and output market clearing results to the dispatching automation system.

Interaction with higher-level dispatching agencies: Interact with the national dispatching agency's inter-provincial technical support system for inter-provincial power spot clearing results and execution results, and with inter-provincial dispatching agencies for regional ancillary service market information and inter-provincial interconnection line plans.

Interaction with the power trading platform: Obtain business entity registration information, medium- and long-term curve information, and market declaration information from the power trading platform, and output market operation information and disclosure information to the power trading platform.

Reliability Assurance Requirements

The system adopts a dual-site deployment architecture with consistent functional architecture and core modules, supporting active-standby or active-active operation modes. Specific requirements include:

• The human-machine workstation supports automatic connection to sites with normal functions
• Efficient and reliable data synchronization function between sites, and support breakpoint resumption
• At least two communication channels with different routes between sites
• The system has the ability to monitor the operating status in real time and support abnormal alarm push

Security protection requirements

The system security protection must meet the requirements of 8.1 of GB/T 22239-2019, including:

• Adopt encryption, signature, access control and other measures for declared data
• Achieve secure data transmission with the power trading platform through horizontal one-way security isolation facilities
• Use independent logical isolation measures to connect to the power trading platform network
• Deploy cross-region transmission services based on trusted verification, malicious code traffic analysis devices and network security monitoring devices

Detection test methods

Chapter 10 of the standard details the system's testing methods, including functional testing, performance testing, data interaction testing, reliability assurance testing, and security protection testing. Before testing, relevant technical information must be collected, a test plan must be developed, and a test environment that meets the requirements must be established.

Functional testing must cover all basic functions and application modules. Performance testing must verify all system performance indicators. Data interaction testing must check the system's data interaction with external systems. Reliability assurance testing must verify the reliability of dual-site deployments. Security protection testing must check the system's security measures.

Implementation Recommendations and Outlook

The following recommendations are made for the implementation of GB/T 45905.2-2025:

Phase-based Implementation Strategy: Each province should develop a phased implementation plan based on its own electricity market development, first completing the development of basic functions and then gradually improving application functions.

Technical Team Development: Strengthen the training of professional and technical personnel, and establish a team of interdisciplinary talents with a deep understanding of electricity, the market, and technology.

System iteration and upgrade: With the deepening of power market reform and technological development, the system needs to be continuously iterated and upgraded to adapt to new market rules and technical requirements.

Inter-provincial coordination mechanism: Establish a sound inter-provincial coordination mechanism to ensure the smooth implementation of inter-provincial market support functions.

The implementation of this standard will effectively promote the standardization of provincial power spot market technical support systems, provide solid technical support for the efficient, fair and safe operation of the power market, and promote the optimal allocation of power resources and the safe and stable operation of the power system.