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On-line estimating method for power demand balanced capability based on full network topology

A technology of power demand and balancing ability, applied in the field of power system, can solve the problem of poor emergency response ability of power grid, difficulty in timely tracking and adjustment of low-frequency load shedding scheme of the whole network, and inability to dynamically track and calculate the stability of the whole network or small area system accurately. and other issues to achieve the effect of standardization

Inactive Publication Date: 2011-11-23
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology

The existing problems are: it is impossible to accurately and dynamically track and calculate the system stability of the whole network or small areas, it is difficult to track and adjust the low-frequency load reduction scheme of the whole network in time, and the power grid has poor resilience to accidents

Method used

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  • On-line estimating method for power demand balanced capability based on full network topology
  • On-line estimating method for power demand balanced capability based on full network topology
  • On-line estimating method for power demand balanced capability based on full network topology

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Embodiment Construction

[0037] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0038] An online evaluation method for power demand balance capability based on the whole network topology, comprising the following steps:

[0039] 1. Establish a two-level power grid dispatching network topology system, such as figure 1 As shown, the system includes the city-level power grid dispatching network and each district and county-level power grid dispatching network. The dispatching network includes district and county-level EMS servers, operation terminals and network switches connected together through a local area network. The city-level power grid dispatching network and each district and county-level power grid dispatching network are connected together through network switches to form a two-level power grid dispatching network topology system.

[0040] 2. The system server imports the basic scheduling data and historical data int...

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Abstract

The invention relates to an on-line estimating method for a power demand balanced capability based on a full network topology, and the method comprises the following steps of: (1) establishing a two-level power grid scheduling network topology system comprising municipal power grid scheduling networks and various county level power grid scheduling networks; (2) introducing basic scheduling data and history data to a system database and updating the data real-time by a system server; and (3) automatically setting a low-frequency load-shedding scheme. In the invention, according to the principals of the full power grid electricity quantity balance, multiple restrict conditions and economic dispatch, the adopted method combining the full network topology analysis with the engineering experience can be used for finishing the full network low-frequency on-line calculation and the scheme setting calculation, predicting the system small area low-frequency control strategy, monitoring the dynamic operating characteristic of a power grid in real time, dynamically adjusting the scheme and fulfilling various statistical report forms, and assisting users to finish individual work excellently, thus, the strategic system can be controlled dynamically, efficiently, economically and safely to operate.

Description

technical field [0001] The invention belongs to the field of electric power systems, in particular to a physical disconnection state detection system and method of a power protection circuit. Background technique [0002] According to the requirements of the "Guidelines for the Safety and Stability of Power Systems", the power system must reasonably arrange the sequence of automatic low-frequency load shedding and the number of loads shed. When there is a shortage of active power in all or part of the system after decommissioning, a sufficient number of lesser loads can be automatically subtracted in a planned manner according to the frequency drop to ensure the safe operation of the system and uninterrupted power supply to important users. [0003] At present, the grid dispatching system in large and medium-sized cities adopts a two-level grid dispatching system. The formulation of the low-frequency load reduction plan for the city-level and district-county two-level dispa...

Claims

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Application Information

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IPC IPC(8): G06Q10/00G06Q50/00
Inventor 魏珍王强王海林王刚翟晓磊周立军王莹周骥飞龚成虎邓子泥范广民赵彦卿
Owner STATE GRID TIANJIN ELECTRIC POWER
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