Composite dynamic power supporting system and coordination control method thereof

A dynamic power and support system technology, applied in flexible AC transmission system, reducing/preventing power oscillation, reactive power compensation, etc., can solve the problems of many steps, unable to guarantee rapidity, and relying on dispatching instructions, etc., to achieve fast speed and satisfy The demand for large-capacity dynamic active power and reactive power, and the effect of ensuring rationality

Active Publication Date: 2020-01-07
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Application Information

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Problems solved by technology

Existing control methods currently have many steps or need to rely on scheduling instructions, which cannot guarantee rapidity

Method used

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  • Composite dynamic power supporting system and coordination control method thereof
  • Composite dynamic power supporting system and coordination control method thereof
  • Composite dynamic power supporting system and coordination control method thereof

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, 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 are not intended to limit the present invention.

[0032] see figure 1 , connection diagram of composite dynamic power support system at receiving end of HVDC transmission system. The coordinated control method of the composite dynamic power support system is implemented by the composite dynamic power support system, and the composite dynamic power support system includes a condenser, a battery energy storage system, an energy storage bidirectional grid-connected converter and a control module. The condenser ...

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Abstract

The invention discloses a composite dynamic power supporting system suitable for a high-voltage direct-current power transmission weak receiving end system and a coordination control method thereof. The system comprises a phase modifier, a battery energy storage system, an energy storage bidirectional grid-connected converter and a control module. Through energy storage active power control, energy storage reactive power control, bidirectional grid-connected conversion control and phase modifier excitation control, an energy storage output active power reference value, an energy storage outputreactive power reference value, an energy storage output power actual value and an excitation voltage of the phase modifier are respectively controlled. The system is advantaged in that sufficient active power and reactive power can be quickly provided at the same time, so lowest points of the voltage and the frequency of a receiving-end alternating-current system after commutation failure of a direct-current power transmission system are improved, the recovery process is accelerated, and the requirement of the high-voltage direct-current transmission weak receiving end alternating-current power grid for high-capacity active power and reactive power storage is met.

Description

technical field [0001] The invention belongs to the technical field of power system control and protection, and in particular relates to a composite dynamic power support system and a coordinated control method thereof. Background technique [0002] With the rapid development of long-distance large-capacity power transmission systems, the impact of DC commutation failures on AC systems is increasing. The commutation failure of the inverter station seriously affects the stable operation of the AC system at the receiving end, especially when the grid structure of the receiving end system is weak, the frequency of commutation failure will increase significantly. [0003] In order to reduce the adverse effects of commutation failure, the main measures can be divided into two categories: by adjusting the inverter station controller and by configuring additional reactive power compensation devices. Among them, the configuration of additional reactive power compensation devices is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/16H02J3/32
CPCH02J3/16H02J3/24H02J3/32Y02E40/10Y02E40/30
Inventor 程艳孙树敏管荑虞临波于芃王楠马强王士柏王玥娇张兴友寇鹏程文
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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