CN-122026624-A - Remote safety regulation and control method, system, electronic equipment and medium of low-frequency low-voltage load shedding device

CN122026624ACN 122026624 ACN122026624 ACN 122026624ACN-122026624-A

Abstract

The invention relates to the technical field of safety and stability control of power systems, in particular to a remote safety regulation and control method, a system, electronic equipment and a medium of a low-frequency low-voltage load shedding device. The method comprises the steps of firstly obtaining running state data of a low-frequency low-voltage load shedding device and real-time running data of a power grid, generating a standardized operation ticket of the low-frequency low-voltage load shedding device through a cloud platform based on the running state data and the real-time running data of the power grid, transmitting the standardized operation ticket to side equipment through a safety pipeline, verifying a received standardized operation ticket through the side equipment, and executing local logic locking verification based on the real-time running data of the power grid after the command verification is passed, so as to generate safety permission allowing the command to issue. By the mode, the problem that the high-efficiency and reliable management of remote modification of the low-frequency low-voltage load shedding device is difficult to realize under the condition of ensuring safety in the prior art is solved, and the intelligent level and operation and maintenance efficiency of the safety control of the power grid are improved.

Inventors

ZHENG JUNXIANG
XIANG YEJUN
KONG FANFANG
CHEN FAN
SUN JINGLIAO
QIU YUTAO
XI HONGLEI
ZHOU ZHENYU
YU KAI
XIA HONGXIN
GAO BINGWEI
CHEN LI

Assignees

国网浙江省电力有限公司温州供电公司
国网浙江省电力有限公司科技创新中心

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (10)

1. The remote safety regulation and control method for the low-frequency low-voltage load shedding device is characterized by being based on Yun Guan side end framework, wherein the cloud pipe side end framework comprises a cloud platform, a safety pipeline, side equipment and the low-frequency low-voltage load shedding device, wherein the side equipment and the low-frequency low-voltage load shedding device are installed on a power grid substation, and the method comprises the following steps: acquiring the running state data of the low-frequency low-voltage load shedding device, and acquiring the real-time running data of a power grid; Generating a standardized operation ticket of the low-frequency low-voltage load shedding device through the cloud platform based on the operation state data and the power grid real-time operation data; transmitting the standardized operation ticket to the side device through the secure pipeline; And carrying out instruction verification on the received standardized operation ticket through the side equipment, and after the instruction verification is passed, executing local logic locking verification based on the real-time operation data of the power grid so as to generate a security permission allowing the instruction to issue.
2. The method of claim 1, wherein after performing a local logical lock-out check based on the grid real-time operational data, the method further comprises: generating an operation confirmation request through the side equipment; uploading the operation confirmation request to the cloud platform, and enabling the cloud platform to receive and display the operation confirmation request to authorized personnel; Responding to a confirmation operation instruction of an authorized person, and generating an execution instruction corresponding to the operation instruction through the cloud platform; And issuing the execution instruction to the side equipment through the safety pipeline, so that the side equipment issues a modification instruction corresponding to the standardized operation ticket to the low-frequency low-voltage load shedding device.
3. The method of claim 1, wherein the operating state data comprises soft platen state data, hard platen state data, device alert information, and active power values, wherein the grid real-time operating data comprises system frequency values, bus voltage values, and device state information, and wherein the acquiring the operating state data of the low-frequency low-voltage load shedding device and acquiring the grid real-time operating data comprises: Acquiring the state data of the soft pressing plate and the active power value through a data acquisition unit arranged in the low-frequency low-voltage load shedding device; Acquiring the state data of the hard pressing plate through switching value acquisition equipment arranged outside the low-frequency low-voltage load shedding device; Acquiring the device alarm information through a communication interface of the low-frequency low-voltage load shedding device; acquiring the system frequency value and the bus voltage value through a data interface of a power dispatching data network; And acquiring the equipment state information through an in-station monitoring system.
4. A method according to claim 3, wherein generating, by the cloud platform, a standardized operation ticket for the low-frequency low-voltage load shedding device based on the operation state data and the grid real-time operation data comprises: matching the running state data and the power grid real-time running data with a preset strategy model through the cloud platform to generate an initial operation instruction; Performing policy compliance verification on the initial operation instruction to obtain a verified instruction to be issued; and executing multistage digital signature processing on the to-be-issued instruction through the cloud platform to form the standardized operation ticket.
5. The method of claim 4, wherein the secure pipeline is configured with an encrypted transport mechanism and a secure isolation device, wherein the transporting the standardized operation ticket to the edge device via the secure pipeline comprises: Packaging the standardized operation ticket into an encrypted data packet through the encrypted transmission mechanism, and transmitting the encrypted data packet through an encrypted tunnel; protocol stripping and application layer content security inspection are carried out on the encrypted data packet in transmission through the security isolation device; transmitting the data passing through examination to the side device through a data ferrying mechanism.
6. The method of claim 5, wherein the standardized operation ticket includes digital signature information and operating parameter instructions, and wherein the verifying the received standardized operation ticket by the edge device comprises: Decrypting and verifying the digital signature information through the side equipment, and confirming the integrity of the standardized operation ticket and the validity of the issuing source; Performing format compliance checking on the operation parameter instruction, and verifying that the operation parameter instruction meets the data structure requirement of a preset communication protocol; And comparing the operation parameter instruction passing verification with a locally stored safety fixed value range, and confirming that the operation parameter instruction is in a parameter interval allowing execution.
7. The method of claim 6, wherein the performing a local logical lock-out check based on the grid real-time operational data comprises: Acquiring a current system frequency value, a bus voltage value and equipment state information through the side equipment; Checking whether the current system frequency value is in a preset frequency safety range or not through the side equipment, checking whether the bus voltage value is in the preset voltage safety range or not, and checking whether a locking signal affecting operation exists in the state information of related equipment or not; and if the current system frequency value is in a preset frequency safety range, the bus voltage value is in a preset voltage safety range and a locking signal affecting operation does not exist, generating a safety permission allowing the instruction to issue.
8. The remote safety regulation and control system of the low-frequency low-voltage load shedding device is characterized by being based on a cloud pipe side end framework, wherein the cloud pipe side end framework comprises a cloud platform, a safety pipeline, side equipment and the low-frequency low-voltage load shedding device, the side equipment and the low-frequency low-voltage load shedding device are installed on a power grid substation, and the remote safety regulation and control system comprises: the real-time operation data acquisition module is used for acquiring the operation state data of the low-frequency low-voltage load shedding device and acquiring the real-time operation data of the power grid; the standardized operation identifier generation module is used for generating a standardized operation ticket of the low-frequency low-voltage load shedding device through the cloud platform based on the operation state data and the power grid real-time operation data; The operation identification safety transmission module is used for transmitting the standardized operation ticket to the side equipment through the safety pipeline; And the safety license generation module is used for carrying out instruction verification on the received standardized operation ticket through the side equipment, and executing local logic locking verification based on the power grid real-time operation data after the instruction verification is passed so as to generate the safety license allowed to be issued by the instruction.
9. An electronic device, comprising: at least one processor, and A memory communicatively coupled to the at least one processor; Wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.
10. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1-7.

Description

Remote safety regulation and control method, system, electronic equipment and medium of low-frequency low-voltage load shedding device Technical Field The invention relates to the technical field of safety and stability control of power systems, in particular to a remote safety regulation and control method, a system, electronic equipment and a medium of a low-frequency low-voltage load shedding device. Background Along with the continuous expansion of the scale of the power system and the increase of the operation complexity, the low-frequency low-voltage load shedding device is particularly important as a key defense line for guaranteeing the safe and stable operation of the power grid. Traditionally, the platen switching and setting modification of low frequency, low voltage load shedding devices relies on the operator going to the substation site for in situ operation. The method has the obvious defects that firstly, the timeliness is poor, the dynamic change of the power grid operation mode cannot be quickly adapted, the adjustment strategy is slow under the emergency condition, the optimal control time can be missed, secondly, the economical efficiency is low, the manpower and traffic cost is high, the operation and maintenance efficiency is low, furthermore, the safety is insufficient, the manual operation is easy to cause wrong setting or wrong throwing and withdrawing, personnel frequently enter a high-pressure environment to bring personal safety hidden trouble, and finally, the management is rough, the operation records are scattered, and a unified and credible full-network audit tracing mechanism is lacked, so that the requirement of the modern smart power grid on lean management is difficult to meet. To overcome the above problems, some of the techniques have been attempted to be modified by means of telecommunications, but a simple "master-terminal" two-layer structure is generally employed. For example, reference 1 (CN 119513767 a) discloses a low-frequency low-voltage load-shedding device modification method based on remote communication, which generates an instruction through a master station and directly issues to a terminal device in an attempt to improve the operation efficiency. However, the method lacks a deep safety protection system, has the safety risks that the instruction is tampered maliciously, misoperation is directly issued to equipment and the like, and cannot be applied in large scale in the relay protection field with extremely high safety requirements. In particular, the method of the comparison document 1 focuses on basic communication transmission, failing to fully incorporate the variability of the real-time operating state of the power grid (such as rapid fluctuations in frequency, voltage) and the risk of delays in the transmission of operating instructions. The operation of the low-frequency low-voltage load shedding device highly depends on the current system condition, if remote modification is not tightly coupled with real-time power grid data, the instruction execution time can be improper, so that misoperation or refusal operation risks are caused, and meanwhile, a simple verification mechanism can not deal with complex network attacks, and security holes exist. Therefore, the prior art is difficult to realize efficient and reliable management of remote modification of the low-frequency low-voltage load shedding device under the condition of ensuring safety. Disclosure of Invention Aiming at the defects or shortcomings, the invention provides a remote safety regulation and control method, a system, electronic equipment and a medium of a low-frequency low-voltage load shedding device, which can realize high-efficiency and reliable management of remote modification of the low-frequency low-voltage load shedding device under the condition of ensuring safety. The invention provides a remote safety regulation and control method of a low-frequency low-voltage load shedding device, which is based on Yun Guan side end framework, wherein the cloud pipe side end framework comprises a cloud platform, a safety pipeline, side equipment arranged on a power grid substation and the low-frequency low-voltage load shedding device, and the method comprises the following steps: And acquiring the running state data of the low-frequency low-voltage load shedding device, and acquiring the real-time running data of the power grid. And generating a standardized operation ticket of the low-frequency low-voltage load shedding device through the cloud platform based on the operation state data and the real-time operation data of the power grid. The standardized operation ticket is transmitted to the side device via the secure pipeline. And carrying out instruction verification on the received standardized operation ticket through the side equipment, and after the instruction verification is passed, executing local logic locking verification based on the real-time operation data of the powe