System for realizing automatic digital protection and closed loop moving die test

Abstract

The invention relates to a system for realizing automatic digital relay protection and closed loop moving die test. The system comprises a host computer, network connection equipment, a real-time emulation conversion device and a power system digital emulation device which are all used for processing information and arranged for real-time emulation conversion device configuration; the real-time emulation conversion device is connected with the host computer through the network connection equipment; the power system digital emulation device is connected with the real-time emulation conversion device; the network connection equipment and the real-time emulation conversion device are respectively connected with a relay protection device to be tested; and the real-time emulation conversion device comprises a main control panel, an A / D(Analog Signal to Digital Signal) collecting panel, a switching on or off quantity panel, a power panel, a synchronous interface panel, an FT (Functional Test) 3 panel, an Ethernet interface and an optical interface. The invention solves the problem of moving die test of a digital relay protection device and provides a convenient and high-efficient test method.

Description

technical field [0001] The patent of the invention belongs to the field of dynamic model detection of digital relay protection of electric power system, and specifically relates to a system for realizing automatic and closed-loop dynamic model test of digital relay protection. Background technique [0002] With the maturity of technologies such as intelligent switches, photoelectric current / voltage transformers, online status detection of primary operating equipment, and training and simulation of substation operation, as well as the development and application of high-speed computer networks in real-time systems, it is bound to be of great importance to existing substation automation. Technology has had a profound impact, making it possible to establish a fully digital substation automation system. [0003] The IEC61850 standard is a substation automation standard issued by the International Electrotechnical Commission (IEC). China has transitioned from the standard resear...

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Problems solved by technology

[0006] ADPSS outputs analog quantities, which cannot be directly connected to digital protection and measurement and control devices, let alone tested

[0007] Novelty searches at home and abroad have found that there is currently only one report on the development of similar products, the patent number is 200910076086.5. RTDS (Real Time Digital Simulator) output analog to digital power simulation conversion device, but it has many shortcomings mainly include: 1) Only convert the analog output of RTDS to conform to IEC61850-9-1 / IEC61850-9 -2 protocol message, there is no interface on the hardware to support the output of digital signals whose protocol is IEC60044-7 / 8, and it is impossible to test the digital protection conforming to this protocol; 2) The physical analog channel on the device and IEC61850-9-1 / 8 The data set channel of the IEC61850-9-2 protocol is fixed and cannot be freely configured; 3) The channel number of the sampled value message sent cannot be freely set, and can only be fixed at 12 channels. However, the current situation of domestic digital protection is that the number of channels is ok It is freely configurable and has limitations in use; 4) The function of each channel for sending sampled value messages is not flexibly defined. / Send GOOSE information, which brings difficulties to test certain sampling values ​​and digital protection devices of GOOSE networking; 6) Sampling values ​​and GOOSE parameters can only be manually configured; 7) Synchronization interface can only receive GPS signals, not optical B code signal, and most of the synchronous interfaces of the current protection devices are optical B code interfaces, which makes the replacement device and the protection device synchronously problematic

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