Auxiliary decision making method for provincial power grid accident emergency control
A technology for emergency control of accidents and provincial power grids, applied in the direction of emergency treatment AC circuit layout, electrical components, circuit devices, etc., can solve the problem of poor implementability of decision-making schemes, high control costs, control costs, and stable control strategies for control means , Water and thermal power adjustment characteristics have not been carefully considered and optimized
Active Publication Date: 2016-07-27
STATE GRID CORP OF CHINA +1
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Problems solved by technology
The current online system is built from top to bottom, and the accident emergency control auxiliary decision-making model is established based on the UHV interconnected large power grid. Its control cost, control means, stability control strategy, and water and thermal power regulation characteristics of provincial power grid emergency control have not yet been solved. Fine consideration and optimization may lead to poor implementability of decision-making schemes or excessive control costs
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[0041] Such as figure 1 Shown is the method flowchart of the present invention: this provincial power grid accident emergency control auxiliary decision-making method provided by the present invention comprises the following steps:
[0042] S1. When an accident occurs in the provincial power grid, the power system automatically scans and judges the nature of the fault in the provincial power grid, obtains the operating data of the provincial power grid at the time of the fault, and establishes a real-time power flow, safety restrictions, control measures and power grid sensitivity database;
[0043] S2. The 220kV and above provincial power grid system is equivalent to a node-branch topology: use transmission lines and contact transformers as branches, use power plants and inter-provincial tie lines as power nodes, and use all substations The 220kV bus is the load node, and the off-grid load and the output of small power sources connected to the grid are equivalent to the 220k...
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The invention discloses an auxiliary decision making method for provincial power grid accident emergency control. The method comprises the following steps: automatically scanning and judging the property of a provincial power grid fault by a power system, obtaining provincial power grid operation data in the fault and building a power grid real-time power flow database, a security restriction database, a control measures database and a power grid sensitivity database; making systems of 220kV and above for a provincial power grid equivalent to a node-branch topology structure; with the minimum total control cost after a power grid accident as a target function and load balance, power flow security and a control variable as constraint conditions, building an auxiliary decision making model for provincial power grid accident emergency control; and determining a model, and obtaining an auxiliary decision making scheme for provincial power grid accident emergency control. The decision making method is provided from the provincial power grid particularity by combining the provincial power grid dispatching principle, the control requirements and the practical operating experience; the performability and the operability of the decision making scheme are improved; the workload when a dispatcher treats the power grid accident is reduced; the treatment strategy is optimized; and the timeliness of power grid accident treatment is ensured.
Description
technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to an auxiliary decision-making method for emergency control of provincial power grid accidents. Background technique [0002] In recent years, with the comprehensive promotion of the construction of the large-scale operation system of the State Grid and the accelerated construction of the national UHV interconnected power grid, the disadvantages of the traditional power grid dispatching mode relying on the experience of power dispatchers have gradually become prominent. This is where the stability analysis application comes in. At present, the online security and stability analysis system is embedded in the new generation D5000 dispatching platform. Based on the real-time data synchronization and sharing of the entire network, regular security scans and the analysis mechanism of expected methods, it monitors the operation risks of the current power grid a...
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IPC IPC(8): H02J3/00
CPCH02J3/00H02J3/001H02J2203/20
Inventor 石辉李光辉
Owner STATE GRID CORP OF CHINA