Double stability control device mutual detection control method and system

A technology of stabilizing control device and control method, applied in the direction of circuit devices, electrical components, etc., can solve problems such as failure of stabilizing control measures, low safety and reliability, and system misoperation, so as to reduce the risk of system misoperation and improve safety and stability Effect

Pending Publication Date: 2019-02-19
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main technical problems of this solution are: the stability control system has no redundant configuration, and the safety and reliability are low. After the device fails, the relevant stability control measures will all fail
The main technical problem of this scheme is: two sets of independent operation of the stability control device, any one device misoperation or two sets of devices due to abnormal reasons such as sampling lead to inconsistent judgments, may cause the consequences of system misoperation

Method used

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  • Double stability control device mutual detection control method and system
  • Double stability control device mutual detection control method and system
  • Double stability control device mutual detection control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] see image 3 , the embodiment of the present invention provides a dual-set stability control device mutual inspection control system, using two sets of stability control devices 11 installed in the same substation and capable of receiving and sending logic commands to each other to form a stability control system.

[0041] Wherein, the two sets of stabilization control devices 11 can operate independently without interfering with each other. The input terminals of the two sets of stabilizing devices 11 are connected to the object 10 to be inspected through coaxial cables, and are used to collect the electrical quantity of the object 10 to be inspected in real time. The electrical quantity includes the current and voltage of the circuit of the object to be inspected. The output ends of the two sets of stabilizing control devices 11 are connected to the controlled object as the stabilizing device through the optical cable 12, and are used to send overload action instructi...

Embodiment 2

[0048] An embodiment of the present invention provides a mutual inspection control method for two sets of stability control devices, which is realized based on the mutual inspection control system for two sets of stability control devices provided in Embodiment 1. The mutual inspection control method of the double sets of stability control devices is as follows:

[0049] 1) Under the condition that the communication connection between the two sets of stabilizing control devices 11 is normal, the two sets of stabilizing control devices 11 respectively sample the detected object;

[0050] When any set of stabilizing control devices 11 satisfies the overload warning condition for the sampling of the detected object 10 under normal conditions, an overload action permission signal is sent to the other set of stabilizing control devices 11;

[0051] When any set of stabilization control device 11 samples the current and power of the object 10 under normal conditions and reaches a fi...

Embodiment 3

[0068] see Figure 4 , this embodiment is based on Embodiment 1 and Embodiment 2, taking the realization of line overload and load shedding function as an example, a control method for a double-set anti-malfunction stability control system is proposed, including:

[0069] When the first stabilizing control device 111 / second stabilizing control device 112 meets the overload warning condition for the sampling of the detected object 10 and issues the "device overload warning" command, the following three conditions should be met at the same time:

[0070] 1) The maintenance pressure plate of the line 10 of the inspected object exits;

[0071] 2) The line current of the detected object 10 ≥ the overload alarm current setting value (the direction is not judged);

[0072] 3) The line power of the detected object 10 ≥ the fixed value of the overload alarm power (the direction is not judged).

[0073] When the first stabilizing device 111 / second stabilizing device 112 samples the ob...

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Abstract

The invention discloses a double stability control device mutual detection control method and system. The double stability control device mutual detection control system comprises two stability control devices arranged in the same transformer substation, and the two stability control devices are used for sampling detected objects. When detected object sampling results of any stability control device meet overload alarm conditions, overload action enabling signals are transmitted to the other stability control device. After any stability control device is started in an overload manner, when sampling is normal, the current and the power of the detected objects reach constant values and the overload action enabling signals from the other stability control device are received, overload actioninstructions are transmitted to controlled objects. According to the double stability control device mutual detection control method and system, on the premise of ensuring the redundancy of the system, the risk of misoperation of the system is effectively reduced by mutual detection of the two stability control devices, continuous, safe and reliable running of the stability control system is ensured, and safety and stability of an electric power system are effectively improved.

Description

technical field [0001] The invention relates to the technical field of power system stability and safety control, in particular to a method and system for mutual inspection and control of two sets of stability control devices. Background technique [0002] As the second and third lines of defense for the safe and stable operation of the power system, the power system safety and stability control device (hereinafter referred to as the stability control device) has a key position and role. The stability control device can generally realize functions such as equipment overload load shedding / unit, equipment trip load shedding / unit, low-frequency and low-voltage load shedding, etc., to improve the safety and stability of the power system. [0003] From the perspective of existing configuration schemes, usually the stability control device can be configured in a single or double configuration. [0004] For the single-set configuration scheme, the topology diagram is as follows f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCH02J13/00019
Inventor 杨文佳陈兴华王延纬杨之翰陈睿陈锦昌樊玮李新超郑丹杨振南刘俊磊
Owner GUANGDONG POWER GRID CO LTD
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