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Pumped-storage unit automatic start-stop control method and device

A pumped-storage unit, start-stop control technology, applied in power network operating system integration, information technology support system, climate sustainability and other directions to ensure safe and stable operation

Active Publication Date: 2015-08-12
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

As a result, the vulnerability of the power grid in the period of sudden load rise and fall

Method used

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  • Pumped-storage unit automatic start-stop control method and device
  • Pumped-storage unit automatic start-stop control method and device
  • Pumped-storage unit automatic start-stop control method and device

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0041] In one embodiment, the self-starting and stopping control method of the pumped storage unit, such as figure 1 shown, including the following steps:

[0042] Step S101: By using the coefficient ΔP Max,计划 / ΔP Max,Ref The historical operation curve P of the unified adjustment of the power system Ref,n Make corrections and calculate the load forecast curve for the next day of the system: where ΔP Max,计划 Indicates the next day mode planning curve P 计划,n The difference between the highest value and the lowest value of the load, ΔP Max,Ref Indicates the adjustmen...

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Abstract

The invention discloses a method and device for controlling automatic start and stop of a pumped storage group. The method comprises the steps that firstly, according to a tracking historical running curve and a morrow mode scheduling curve of an electric power system, a morrow load prediction curve of the system is calculated; secondly, according to a morrow generation scheduling curve, the system creeping ability is calculated; thirdly, the morrow load prediction curve of the system is used for calculation of the demand of the system creeping ability; fourthly, a system creeping ability gap and a system power vacancy prediction value are calculated, and the number of starting times and the running mode of the pumped storage group are determined; finally, the pumped storage group is started or stopped to participate in regulation of the peak and the frequency of the electric power system. According to the method and device for controlling automatic start and stop of the pumped storage group, when the electric power system is in a crisis state, the pumped storage group is put into operation in time for solving the running crisis of a power grid, and therefore safe and stable operation of the electric power system is ensured; quick power response ability of the pumped storage group is introduced for the improvement on the frequency control quality of the electric power system; the number of starting times of the pumped storage group is reduced, so that the operation economical efficiency of the system is improved; the daily workload of dispatching personnel is lightened, manpower is saved, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of peak regulation and frequency regulation, in particular to a method and device for autonomous start and stop control of a pumped storage unit. Background technique [0002] Guangdong Province, as a large power consumption province in my country, has a large gap between day and night peaks and valleys and a fast rate of change in Guangdong Power Grid, and its daytime frequency control task is very heavy. According to the power structure characteristics of Guangdong Power Grid, a large number of slow thermal power units are usually responsible for frequency regulation. At the same time, due to the characteristics of the load type in Guangdong, there will be multiple rapid and large fluctuations in the load in several periods of sudden load rise and fall during the day. In extreme cases, the load change rate exceeds 500MW / min. As a result, the shortcoming of the slow adjustment speed of thermal power units ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14
CPCY04S20/222Y02B70/3225Y04S20/224
Inventor 李普明占才亮刘嘉宁李博蔡新雷
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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