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Method for quickly splitting electrical loads

An electrical load, fast technology, applied in the direction of AC network voltage adjustment, power network operating system integration, information technology support system, etc., to achieve the effect of less possibility

Inactive Publication Date: 2014-12-24
SHOUGANG SHUICHENG IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the defects of the existing low-frequency load shedding and low-voltage load shedding protection, that is, the defect that the generator has tended to lose stability before taking load shedding, and provides a method for quickly unloading the electric load. Rapid load shedding before loss of stability

Method used

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Embodiment

[0014] The following is attached figure 1 and 2 , the detailed description of the implementation of the method for fast unloading of electric loads proposed according to the method of the present invention is as follows.

[0015] In Shougang Shuicheng Iron and Steel (Group) Company on June 21, 2013, the generator line failed, and the following methods were used to quickly unload the power load:

[0016] In the event of a power failure, connect the backup protection trip outlet CKJQ1-2 (plug-in terminals c03, c04) of the central substation's second power receiving protection device to the pressure plate LP1 in series and then connect it to the terminal blocks DB1 and DB3. Put two ZR-KVVP-(4×1.5) cables from the switchgear of the step-up station to the main control room Beigang I and II return light difference protection screens (the two-way power supply incoming line protection screen of the central transformer), and connect the terminals according to the schematic diagram Ca...

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Abstract

The invention discloses a method for quickly splitting electrical loads. Shunt tripping is achieved on a booster station switch through light equation protection action and a protection standby outlet, and it is guaranteed that the booster station switch is quickly split, so that it is guaranteed that a power generator can be adjusted to a stable state under the condition that the power generator is not collapsed. The method includes the specific operating steps that under the power failure condition, a standby protection tripping outlet of a central substation two-way power input line protection device is connected to a pressing plate in series and then connected to a terminal strip; two cables led out from a booster station switch cabinet are placed to a master control room I and II loop light equation protection screen, terminals are wired according to principles, and then protection logic debugging is conducted, whether wiring and pressing plate connection are correct or not is verified, and in manual and remote control states, the booster station switch is reliable and does not move. The method achieves the purpose that load shedding is conducted on the power generator before the power generator loses stability, and is simple, practicable, safe, reliable, easy to popularize in the power industry, and suitable for occasions where the generator needs to stably operate, and no protection device needs to be additionally arranged.

Description

technical field [0001] The invention relates to an AC power distribution network system with a self-generating set, in particular to the control of the load distribution of the connected network, and in particular to a method for quickly decoupling electric loads. Background technique [0002] As we all know, the power system is decoupled, that is, the power system is decoupled into working parts that operate synchronously and have active and reactive power balance; it can be used to prevent stability damage, eliminate asynchronous operation mode, and limit equipment overload. Disconnection control is the last barrier for the digital power system to ensure the safe operation of the actual power system and avoid collapse. Generally speaking, when the self-generated power of a system cannot carry all the loads in this section, when the system power is withdrawn, it is necessary to ensure that the generator set will not be shut down, and a part of the load needs to be quickly u...

Claims

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Application Information

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IPC IPC(8): H02J3/14
CPCY02B70/3225Y04S20/222
Inventor 周岁元高令
Owner SHOUGANG SHUICHENG IRON & STEEL GRP
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