A realization method of self-defined protection function of relay protection device based on internal data
A technology of protection function and internal data, applied in emergency protection data processing device, automatic disconnection emergency protection device, emergency protection circuit device, etc. Poor flexibility, effect of increased flexibility and versatility, increased investment cost
Active Publication Date: 2019-10-29
GUANGZHOU METRO GRP CO LTD +1
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Problems solved by technology
Therefore, the existing relay protection devices have the problems of poor configuration flexibility of protection functions and poor versatility
Method used
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Embodiment
[0049] Embodiment: The principles, methods and related configurations of the relay protection device of the present invention to realize voltage and reactive power control
[0050] The present invention can utilize the I / O system that comes with the relay protection measurement and control relay protection device to realize voltage reactive power control, and the principle and method of realizing voltage reactive power are as follows:
[0051] First, data collection is performed by the I / O system that comes with the relay protection device;
[0052] Second, set the fixed value associated with the comparator and timer, and write the corresponding logic equation according to the control principle of the voltage and reactive power control nine domain diagram;
[0053]Thirdly, after the calculation results of voltage and reactive power are judged by the relay protection device, the equipment action instructions for reactive power compensation equipment and on-load tap changer are ...
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The invention discloses a self-defining protection function realization method of a relay protection apparatus based on internal data. The method comprises the steps of S1, designing a comparator, performing comparison on two comparison values constantly through the comparator, wherein the two comparison values refer to comparison between the measurement values of the relay protection apparatus, or comparison between the measurement values of the relay protection apparatus and an immediate value input by a user; and selecting the values which are greater than, equal to or less than those of the comparator to be output; S2, on the basis of the comparator, designing a programmable and modified logical equation; S3, designing a timer, and realizing start time delay and return time layer on other soft relays through the starting time and the return time of the timer; S4, performing setting on the comparator constant values; and S5, compiling a corresponding logical equation based on the requirement of a control principle, performing time-delayed output through the timer, and realizing the self-defining protection function. By virtue of the self-defining protection function realizationmethod, the relay protection apparatus has the self-defining and flexible protection function configuration and enhanced universality.
Description
technical field [0001] The invention relates to a method for realizing a self-defined protection function of a relay protection device based on internal data. Background technique [0002] The existing relay protection device (relay protection device for short) internally stores a lot of data - current, voltage, frequency, power factor, active power, reactive power and digital quantity information. These data are often only used to implement a single function, and the reuse rate is relatively low. The protection functions of the relay protection device have been fixed at the time of design. However, in practical applications, some users often need some special protection functions that the original design of the relay protection device does not have. For example, there are only 4 stages of overcurrent protection on the general relay protection device. accomplish. In addition, the existing relay protection devices do not have the functions of voltage and reactive power con...
Claims
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IPC IPC(8): H02H3/00H02H1/00
CPCH02H1/0092H02H3/006
Inventor 何霖邹东金辉徐钦炜张目然王义曾彬华常宝波谢悦海王攀余龙陈灿森郑昌权徐俊杰黄苗英
Owner GUANGZHOU METRO GRP CO LTD