Energy storage device applied to workover rig

Abstract

The invention relates to an energy storage device applied to a workover rig. The energy storage device comprises energy storage equipment, energy storage monitoring equipment and a two-way DC / DC (Direct Current / Direct Current) converter, wherein the energy storage equipment is connected with the energy storage monitoring equipment and the two-way DC / DC converter respectively; the energy storage monitoring equipment is connected with the two-way DC / DC converter; the two-way DC / DC converter is connected with a DC bus side of a frequency converter and the energy storage equipment respectively; the DC bus side of the frequency converter is connected with a motor, the energy storage monitoring equipment and the two-way DC / DC converter respectively; the energy storage equipment comprises a supercapacitor bank; and the energy storage monitoring equipment comprises a DSP (Digital Signal Processor) circuit, a high-voltage side current and voltage acquisition unit, a low-voltage side current and voltage acquisition unit, A / D (Analog to Digital) conversion circuits, a CMS (Content Management System) capacitance information processing unit, an IGBT (Insulated Gate Bipolar Transistor) driving circuit, a display screen and an alarm circuit. The energy storage device can judge a load and the power supply capacity under the current operation condition in real time, charges the energy storage equipment by fully using deceleration and lowering stages during an operation course, and improves the operation efficiency.

Description

technical field [0001] The invention relates to an energy storage device on a workover rig, in particular to an energy storage device applied to a workover rig powered by a diesel generator set or a power grid (such as a vehicle-mounted workover rig). Background technique [0002] The workover rig is an indispensable maintenance and construction equipment to ensure the normal operation of various types of wells such as oil wells, gas wells or water wells. Current workover rigs generally use diesel generator sets or power grids (commercial power grids) to provide power for them. [0003] The inventor has found in practice that: 1. When using a diesel generator set, the working efficiency of the diesel generator set is low, and there is a waste of energy, which increases the operating cost of the workover rig; The site is usually relatively remote (such as close to the countryside), the demand for electric energy is large, and the requirements for power supply quality and rel...

AI Technical Summary

Problems solved by technology

[0003] The inventor has found in practice that: 1. When using a diesel generator set, the working efficiency of the diesel generator set is low, and there is a waste of energy, which increases the operating cost of the workover rig; The site is usually relatively remote (such as close to the countryside), the demand for electric energy is large, and the requirements for power supply quality and reliability are also high, and the power grid capacity in remote areas is limited, so it may cause certain troubles to the operation of the workover rig

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