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A method and device for recommending a wiring scheme for connecting a backpressure generator to an electrical system

A technology for electrical systems and recommended methods, applied to circuit devices, controlling generators, electrical components, etc. through magnetic field changes, can solve problems that affect the safe and stable operation of electrical systems, fail to meet short-circuit currents, and analyze power flows, so as to improve efficiency and Accuracy, avoiding subjective interference, and ensuring stability

Active Publication Date: 2021-06-22
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor found that there are many schemes for connecting the backpressure machine to the electrical system at present, and experienced technicians are required to choose the scheme for the backpressure machine to be connected to the electrical system, so that the scheme for connecting the backpressure machine to the electrical system is not necessarily the optimal solution ; and it is very likely that the requirements of short-circuit current, power flow analysis, transient analysis, etc. are not met at the same time, and the safe and stable operation of the electrical system may be affected after the back pressure machine is connected to the electrical system due to lack of consideration.

Method used

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  • A method and device for recommending a wiring scheme for connecting a backpressure generator to an electrical system
  • A method and device for recommending a wiring scheme for connecting a backpressure generator to an electrical system
  • A method and device for recommending a wiring scheme for connecting a backpressure generator to an electrical system

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Effect test

Embodiment 1

[0051] figure 1 A flow chart of the recommended method for connecting the backpressure generator to the electrical system in this embodiment is given.

[0052] Such as figure 1 As shown, the recommended method for the connection scheme of the backpressure generator connected to the electrical system in this embodiment includes:

[0053] S101: Obtain the current topological structure and corresponding electrical parameters of the factory electrical system to be connected, the busbar capacity of the factory section, and the voltage level of the factory power system, and store them in the factory electrical system database.

[0054] For example:

[0055] The 600MW pure condensing unit of unit #1 of the power plant is connected to the 220kV step-up station through the main transformer. The voltage level of the high-voltage power plant is 6kV. One no-load voltage regulating split transformer and one off-load voltage regulating double-coil transformer are set up as high-voltage p...

Embodiment approach

[0065] As an implementation mode, when the capacity of the back pressure generator does not exceed the bus capacity of the plant-use section and the outlet voltage is consistent with the voltage level of the plant-use electrical system, the topology structure and corresponding electrical parameters of the plant-use electrical system are retrieved, and according to the current wiring scheme Carry out short-circuit current calculation, and update the corresponding wiring scheme according to the comparison between the short-circuit current connected to the factory electrical system and the breaking capacity of the switch connected to the factory electrical system.

[0066] The advantage of this technical solution is that in the selection of wiring schemes, the impact of the short-circuit current after being connected to the plant electrical system on the plant electrical system is considered, and the wiring scheme is improved on the premise of ensuring the stability of the plant el...

Embodiment 2

[0109] figure 2 A structural schematic diagram of the device for recommending the wiring scheme of the backpressure generator connected to the electrical system in this embodiment is given.

[0110] Such as figure 2 As shown, the device for recommending a wiring scheme for connecting a backpressure generator to an electrical system in this embodiment corresponds to the method for recommending a wiring scheme for connecting a backpressure generator to an electrical system in Embodiment 1.

[0111] Specifically, the device for recommending a wiring scheme for connecting a backpressure generator to an electrical system in this embodiment includes:

[0112] (1) The factory electrical system data acquisition module, which is used to obtain the current topology of the factory electrical system to be connected and the corresponding electrical parameters, the bus capacity of the factory section and the voltage level of the factory power system, and store them in the factory electri...

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PUM

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Abstract

The present disclosure provides a method and device for recommending a wiring scheme for connecting a backpressure generator to an electrical system, which solves the problem of low accuracy in recommending a wiring scheme for connecting a backpressure generator to an electrical system, and has a high accuracy in recommending wiring schemes Effect. The recommended method for the connection scheme of backpressure generators connected to the electrical system, including: according to the known total installed capacity of backpressure generators, determine the different numbers of backpressure generators connected and the corresponding capacity and outlet of each backpressure generator Voltage and type, form a wiring scheme and store it in the wiring scheme set; update the wiring scheme set; perform power flow distribution calculation and transient process analysis respectively according to the topology relationship and corresponding parameters of all wiring schemes in the updated wiring scheme set, The connection scheme that satisfies both power flow distribution calculation and transient process analysis is screened out and recommended as the best connection scheme.

Description

technical field [0001] The disclosure belongs to the field of wiring of back pressure generators, and in particular relates to a method and device for recommending a wiring scheme for connecting a back pressure generator to an electrical system. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Using steam extraction to drive the back pressure generator set to generate electric energy is a way of heat supply transformation of the pure condensing unit. Among them, there are many kinds of wiring for the back pressure machine to be connected to the electrical system. According to the connection position of the back pressure machine, it can be divided into the back pressure machine connected in parallel to the generator outlet bus of the pure condensing unit and the back pressure machine connected to the power system of the plant; The power sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02P9/14H02J3/06G06F30/20
CPCH02J3/00H02J3/06H02P9/14
Inventor 樊潇王彦许卫东聂岩贺艳辉
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP