Central Control Device for Power Exchange Coordination
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Solution Overview
Problem
Existing methods for coordinating power exchange between small technical units and a transmission grid are inefficient due to the need for reserve capacity, especially when units like photovoltaic systems cannot deliver planned power, leading to suboptimal operation.
Innovation Solution
A central control device coordinates power exchange by aggregating data from small units, determining available power profiles, and selecting units based on optimization criteria to form a schedule that meets a call-off plan, using a central store for compensation power to ensure compliance without overcapacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If excess capacity is held in reserve to guarantee minimum power delivery, then reliability of power supply is improved, but operational efficiency deteriorates
Solution Approach 1:
The control device performs preliminary actions by forecasting power availability of small units before the call-off plan execution time. Individual schedules are recorded in advance, showing what electrical power can be connected to each small unit. This allows the system to optimize which small units are selected to fulfill the call-off plan without needing to hold excess capacity in reserve, as the actual power delivery can be accurately predicted and coordinated.
2Device complexity
If small units are selected to feed directly into transmission grid without stationary battery store, then device complexity is reduced, but power delivery reliability worsens
Solution Approach 1:
A central control device acts as an intermediary between small units and the transmission grid. The control device coordinates the power exchange by aggregating data from small units, determining available power profiles, and selecting units based on optimization criteria. This intermediary coordination mechanism enables small units without stationary batteries to reliably fulfill call-off plans by intelligently selecting and scheduling which units deliver power at specific times.
3Ease of operation
If individual small units operate independently without coordination, then ease of operation is improved, but overall system productivity deteriorates
Solution Approach 1:
The control device merges the capabilities of multiple independent small units by aggregating their power data and coordinating their operation. Individual schedules of available electrical power are combined to form an overall schedule, allowing the collective group of small units to fulfill call-off plans that no single unit could meet alone. This merging approach maintains the simplicity of individual unit operation while achieving high aggregate productivity.
Data Source
AI summary
A method coordinates an exchange of power between a plurality of technical small units on the one hand and a transmission network on the other hand. A central control device forms a general schedule from individual schedules of all available small units and controls the exchange of power of the small units with the transmission network according to the general schedule, wherein a delta schedule is calculated by the control device from a balancing of the general schedule and a predetermined call-off plan of a network operator or an electricity exchange. A central memory connected to the transmission network is controlled according to the delta schedule, such that the central memory exchanges an electrical compensation power with the transmission network, such that the technical small units and the central memory together carry out the call-off plan.