An automatic voltage control system and control method taking reactive power price compensation into account

An automatic voltage and control method technology, applied in reactive power compensation, system integration technology, AC network voltage adjustment, etc., can solve problems such as increased operation and maintenance costs, increased network loss, and impact on active power transmission capacity

Active Publication Date: 2019-01-15
JIANGSU ELECTRIC POWER CO +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

For renewable energy such as wind power and photovoltaics, the use of inverters to regulate reactive power and voltage to the grid will inevitably cause operational damage to its equipment, increase operation and maintenance costs, increase network losses, and affect active power transmission capacity, etc.

Method used

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  • An automatic voltage control system and control method taking reactive power price compensation into account
  • An automatic voltage control system and control method taking reactive power price compensation into account
  • An automatic voltage control system and control method taking reactive power price compensation into account

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Embodiment Construction

[0076] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0077] figure 1 It is a flow chart of the automatic voltage control method considering reactive power price compensation proposed by the present invention, which specifically includes the following steps:

[0078] Step 1: Determine the active and reactive power price compensation coefficients of each station. This step is determined after the previous economic and technical certification. The sub-functions are approximated by the quadratic function to obtain an approximate active and reactive power price compensation curve, and the corresponding coefficients are uploaded to AVC. in the master system.

[0079] Step 2: Read the parameter data of the power grid model, including real-time topology, measurement data after state estimation, etc. For renewable energy stations, the following data should b...

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Abstract

The invention discloses an automatic voltage control system and a control method considering reactive power price compensation, Through the simulation calculation of each section of the actual power network, In order to minimize the cost of network loss and reactive power price, the automatic voltage control (AVC) of inverter phase modulation operation with reactive power price compensation is realized by making full use of the reactive power regulation capacity of renewable energy, which improves the safety and stability of power system.

Description

technical field [0001] The invention relates to the technical field of power grid automatic voltage control, in particular to an automatic voltage control system and a control method considering reactive power price compensation. Background technique [0002] With the high proportion of renewable energy such as wind power, photovoltaic and energy storage systems connected to the power system, the intermittent and fluctuating output will bring problems to the regulation of reactive power and voltage of the grid, especially in areas where renewable energy is connected, only by configuration Advanced non-motion compensation equipment is far from being able to meet the unbalance problem caused by power fluctuations. Utilize the active and reactive power decoupling control of the inverter, and even realize the phase modulation operation of the inverter, so as to provide more sufficient reactive power reserve capacity for the renewable energy sending end and even the entire power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/00H02J13/00
CPCH02J13/0006H02J3/008H02J3/16H02J2203/20Y04S10/22Y04S10/50Y02E40/30Y02E40/70Y02E60/00
Inventor 颜全椿顾文范立新李辰龙徐钢莫菲徐妍单华钱鹏
Owner JIANGSU ELECTRIC POWER CO
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