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Method and device for calculating battery capacity

A calculation method and battery technology, applied in the field of DC systems, can solve problems such as inaccurate battery capacity calculation results, and achieve the effect of saving engineering costs and reducing calculation capacity

Active Publication Date: 2022-06-07
CEEC JIANGSU ELECTRIC POWER DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, improper division of the initial period will result in inaccurate battery capacity calculation results.

Method used

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  • Method and device for calculating battery capacity
  • Method and device for calculating battery capacity
  • Method and device for calculating battery capacity

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0037] The present invention is described in detail below by taking the battery capacity calculation of the Huadian Jurong 2×1000MW project as an example:

[0038] Jurong Phase I and Phase II both use the same type of units manufactured by Shanghai Turbine Works, but differ in the relevant parameters and design requirements of the oil pump. The second-stage lubricating oil pump is configured as 2×100% AC lubricating oil pump and 1×100% DC lubricating oil pump. When the oil pump fails, the lubricating oil pressure will decrease rapidly, so the lubricating oil pump of this model needs to be started quickly, and the lubricating oil pump can be quickly turned off. When put into use, dur...

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Abstract

The invention discloses a storage battery capacity calculation method and equipment. The method includes the following steps: dividing the accident discharge time of the DC system as the main power supply into an initial period, a transition period and a continuous period in sequence, and the duration of the initial period is longer than the calculated period. The duration of the DC load starting current; for the initial period, the transition period and the continuous period, respectively use the DC load starting current, rated current and battery circuit current corresponding to the continuous period to calculate the battery capacity of each period using the ladder calculation method; Based on the calculation results of the battery capacity, the final capacity of the battery is determined considering random load factors. The invention can improve the calculation accuracy of the accumulator capacity.

Description

technical field [0001] The invention relates to a battery capacity calculation method and equipment, belonging to the technical field of direct current systems. Background technique [0002] In the design of coal-fired power plants, in the event of a power outage of the whole plant or the loss of power for a unit unit, the DC system supplies power to the DC load that ensures the safe shutdown of the unit. As the backup power supply of the DC system, the reasonable selection of its capacity in consideration of investment and land occupation is of great significance to ensure the safe and stable operation of the DC system. [0003] At present, in the design of the secondary reheating million units, the selection of batteries is generally larger due to the large starting current of the lubricating oil pump, which has some influence on the selection of battery types, plant layout and DC equipment selection. [0004] In the prior art, the accidental discharge duration of the DC ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCG06Q10/06312G06Q10/04G06Q50/06Y02E60/10
Inventor 邹晗高波翁海峰梁文军陈海锋陈祎熙
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
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